food & nutrition
Wellness: Food & Nutrition
Some things to know about "low-cal" pet food
There’s no denying obesity is a major canine health issue. Obesity contributes to arthritis, heart and liver disease, diabetes, respiratory difficulties, heat stroke, some cancers and more. And somewhere between 40 and 50 percent of domestic cats and dogs in the United States are overweight, according to several estimates. As we do in our personal battles of the bulge, we turn to reduced calorie diets for help. Unfortunately, these may not be the straightforward solution they appear to be.
A study of so-called light or low-calorie pet foods performed at the Cummings School of Veterinary Medicine at Tufts University revealed a confusing variation in calorie density and feeding recommendations among brands. Researchers found dry dog foods making weight management claims ranged in calorie density from 217 to 440 kilocalories per cup (kcal/cup), and that the recommended intake ranged from 0.73 to 1.47 times the dog’s resting energy requirement.
What this means is that well-meaning dog owners following manufacturer guidelines might not see promised weight loss in their chubby pups—in fact, they might see weigh gain—leading to frustration for people and ill health for dogs.
Knowing and counting calories is a priority for weight management, according to veterinary nutritionist Edward Moser, MS, VMD, DACVN, with whom we talked about the Tufts study and canine weight management. Dr. Moser is an adjunct assistant professor of nutrition at the University of Pennsylvania School of Veterinary Medicine. In addition, he serves on the National Organic Standards Board Pet Food Task Force.
“It’s incumbent on the pet owner to know what calories are in the food and the energy their dog needs,” Dr. Moser says. While weight and age are a good starting point for calculating what your dog requires maintain or lose weight, there are other important multipliers to take into consideration, such as whether your dog is spayed or neutered, and the intensity and duration of their daily activity. Also, pregnant or nursing dogs and puppies need more energy (aka calories).
A good way to set a calorie baseline is with a visit to your veterinarian. Since only about 17 percent of owners think their dogs are overweight, according to one study, the first step is breaking through denial. Your vet can help. There are several ways to set a daily calorie count, such as aiming for a one percent of total weight loss each week, or 75 percent of the calories required to maintain a goal weight, etc., Dr. Moser says.
The important thing is to be consistent and engaged. Once you cut back on calories, weigh your dog about every ten days, Dr. Moser says, to see when they plateau. Also, he recommends something called “body condition scoring.” The Ohio State University College of Veterinary Medicine website provides an illustrated chart that shows dogs and cats from emaciated to obese. Look at the pictures and ask: Where does my dog fit? You should be able to feel your dog’s ribs but your fingers shouldn’t fit between them.
Why diet food? Why not just feed your dog less of his or her regular food? “What makes a diet food different is we’re essentially diluting calories,” Dr. Moser says. There are only a couple ways you can do that including reducing fat content, which decreases calorie density and palatability, or adding fiber or even air, in the case of kibble. The calories in canned food can be diluted with water. “We are making dogs think they are full when they’ve really only eaten 75 percent of the calories,” Dr. Moser says. “The other stuff is just helping you feed more so the dog doesn’t beg.”
One reason Dr. Moser says people aren’t successful with low calorie food is because they leave it out for free-choice feeding. (Imagine a sort of bottomless bowl." “Because even low calorie foods have calories,” he says. He agrees with the study recommendation that free-choice feeding is not a good option—in part because food today is extremely palatable and so it’s easy for dogs to overeat. The better option is a measured quantity of food a couple times a day, he says.
If you don’t see calories listed on your label that’s because calorie counts are only required on dog food that claims to be lite, light, less calorie or low calorie. (The Academy of Canine Veterinary Nutrition, to which study co-author Dr. Lisa Freeman and Dr. Moser belong, is advocating for requiring calorie information on all pet food labels.) Foods with a light, lite, or low-calorie designation must also adhere to a maximum kilocalorie per kilogram restriction. However, Dr. Freeman pointed out that more than half of the foods evaluated in her study exceeded this maximum.
Why does it matter if your pup’s a little plump? Dr. Moser points to research that shows keeping dogs thin can extend their lives by as much as one and half years—that should motivate us to study labels and get out our measuring cups.
Wellness: Food & Nutrition
Stores are selling more and more dog foods labeled “natural,” “human grade” and “organic,” and the industry considers them to be the hot new trend. But what can these words mean?
Because the government has never bothered to define “natural” for human foods, this word essentially means anything the manufacturer says it does. For pet foods, however, the Association of American Feed Control Officials (AAFCO) has an official definition:
Natural: A feed or ingredient derived solely from plant, animal or mined sources, either in its unprocessed state or having been subject to physical processing, heat processing, rendering, purification, extraction, hydrolysis, enzymolysis or fermentation, but not having been produced by or subject to a chemically synthetic process and not containing any additives or processing aids that are chemically synthetic except in amounts as may occur unavoidably in good manufacturing processes.
Got that? You can render or extrude a pet food to mush, but it’s “natural” if you haven’t added anything synthetic—unless you had to. AAFCO also says that “natural” must not mislead; if it appears on the label, every ingredient in the product must meet the definition. But even AAFCO knows this is impossible. Pet food companies typically buy vitamins, minerals and other additives from factories overseas, where, as we learned in last year’s pet food recalls, quality controls are sometimes nonexistent.
We do not see too many claims about human-grade ingredients on package labels, mainly because AAFCO does not have an official definition of the term. Without an approved AAFCO definition, an ingredient or term is not supposed to be used on pet food labels. AAFCO says “human-grade” is false and misleading, and constitutes misbranding, unless every ingredient in the product—and every processing method—meets FDA and USDA requirements for producing, processing and transporting foods suitable for consumption by humans, and every producer of the ingredients is licensed to perform those tasks. Few pet food companies can meet these criteria.
But AAFCO’s unease does not stop pet food makers from using the term, particularly because larger legal concepts appear to be on their side. In 2007, a case against The Honest Kitchen led the Ohio courts to rule that the company had a constitutional right to truthful commercial free speech, and could use “human-grade” on its labels. The Honest Kitchen advertises on its website that it is “the only pet food manufacturer in the United States to have proven to the Federal FDA that every ingredient it uses in its products are suitable for human consumption.”
Only a few other companies make human-grade claims on their food labels, but many use the term freely in their in-store materials and website advertising. For example, Newman’s Own Organics presents this information in a question-and-answer format: “Q: Does Newman’s Own Organics use human grade materials? Why isn't that written on the bag? A: Newman’s Own Organics organic pet food uses human grade and fit for human consumption ingredients such as natural chicken and organic grains. The AAFCO Board … actually prohibits the printing of ‘Human Grade’ on pet food packaging.”
That brings us to organics. For human foods, “organic” has a precise meaning defined by the USDA’s National Organic Program (NOP). To be certified as organic, plant ingredients in pet foods must be grown without pesticides, artificial fertilizers, genetic modification, irradiation or sewage sludge. Animal ingredients must come from animals raised on organic feed, given access to the outdoors, and not treated with antibiotics or hormones. Producers must be inspected to make sure they adhere to these standards. (Note: They do, but whether the standards are good enough is a separate question.)
In 2002, the NOP did not include pet foods in the organic rules because it could not figure out how to do so. In 2005, it appointed a pet food task force to handle the figuring. A year later, this group quite sensibly recommended that organic standards for humans be applied to pet foods. But, the NOP cautioned, “these requirements will present challenges for pet food manufacturers, especially sourcing non-genetically engineered ingredients.” No kidding. More than 90 percent of soybeans and half the corn grown in United States now come from genetically modified varieties.
Because the NOP has not yet adopted the task force recommendations, organic pet foods are in regulatory limbo, leaving AAFCO with the unenviable task of explaining how to label “organic” pet foods. AAFCO says that (1) under NOP rules, pet foods may not display the USDA organic seal or claim that they were produced according to organic standards. But (2), NOP also says labeling terms such as “100% organic,” “organic” or “made with organic ingredients” on pet foods may be truthful and do not imply organic production or certification. Therefore (3), AAFCO recommends that labeling rules for human foods apply to pet foods.
What to make of this? We think the statements imply that nobody is going to make a fuss about organic claims on pet foods, even when some, most or even all of their ingredients are not really organic.
Mind you, following the rules for organic labeling is complicated (see chart). Even so, you can go into a pet food store and easily find products that violate these standards. Our favorite: companies calling themselves organic when their foods do not contain a single organic ingredient. They get away with this because the USDA, unlike the FDA, doesn’t regulate company names.
Organic foods command higher prices because people believe in the integrity of the standards. If the standards are not met, why pay more? If the USDA allows weaker standards for pet foods, we wonder whether it will continue to defend strong organic standards for human foods. Without strong standards, organics are just about marketing, not production methods. We think everyone—pet food makers, the USDA, AAFCO and the readers of Bark—should demand nothing less than the highest possible standards for natural, human-grade and organic claims on dog foods.
Wellness: Food & Nutrition
Raw food: Yes or no? Strong opinions line up on both sides.
Linguist George Lakoff rose to national prominence during the 2004 presidential campaign for pointing out that conservatives have done a much better job than progressives at framing political debate, and for encouraging the left to stop shooting itself in the foot with the words it uses. While no doubt the good professor would be surprised to hear it, his ideas also shed some light on a very canine subject: the war of words being waged over raw diets for dogs.
Pro-raw feeding extremists tend to be bombastic and refuse to admit any variation among individual animals, nor the needs, wants or desires of the owners of these animals as regards diet. Any problem can be solved by diet, and if problems persist after switching to a raw diet, then the diet needs to be further refined and tweaked. They tend to be anti-veterinarian, anti-commercial foods, anti-cooked food, anti-grain and often anti-supplement.
If your dog fell down the stairs and sprained his shoulder, diet caused it and a diet change will fix it. Raw meaty bones are the universal prescription.
Anti-raw feeding extremists tend to be bombastic and refuse to admit any possible benefits of a raw or homemade diet. They lump all homemade diets together as unbalanced and dangerous. All raw meat, from contaminated ground meats labeled unfit for human consumption to a $19-a-pound grass-fed steak, are considered equally dangerous. Commercial diets are above reproach, formulated by scientists who are completely removed from any marketing, pricing or competitive realities. Health comes in a sack labeled “Complete and Balanced,” and dogs fed raw meat and bones are doomed to have their skeletons dissolve and their intestines turn to bloody jelly, shortly after which they will all die long, painful deaths from parasite infestations.
If your dog is hit by a car, and needs surgery, the accident was caused by diet and putting the dog on kibble will fix it. Commercial diets are the universal prescription.
Forgotten on the sidelines is everyone else—those who feed a little “people food” to their pets but feel bad about it; those who wouldn’t dream of supplementing their dog’s “complete and balanced” commercial diet with anything beyond the occasional complete and balanced Milk Bone; those who regularly feed pizza, Big Macs and French fries to their dogs and can’t remember the last time they bought dog food for the dog or ate a salad themselves; those who use a wide variety of fresh foods with premium kibble; and those who feed an entirely homemade diet but aren’t “pure” enough to satisfy the raw-food extremists. And most importantly, there are the seekers—the legions of dog owners flooding the email lists and message boards trying to figure out how to feed their pets better; wanting to understand what “the raw diet” is, exactly; looking for hints on switching their pets; or trying to find out if changing to a better commercial diet or completely to homemade will help a pet with a health problem.
These folks are met with a hailstorm of advice, most peppered with acronyms that make no sense to them. Some people suggest books they can read, while others warn them to forget the books and listen to their common sense and/or Mother Nature and/or evolution. Feed bones, don’t feed bones, don’t feed raw, you are killing your dog by feeding him kibble, keep feeding kibble until you’re ready to feed raw responsibly, and above all, don’t commit heresy. (“Heresy” would be advocating Billinghurst to a crowd of Lonsdaleians—and if you don’t know what I mean, be thankful and move on.)
I have fed raw diets to my dogs for 20 years, and spent much of that time in the crossfire of this debate, criticized as “not holistic enough” by the raw-feeding extremists, and as a “wild-eyed fanatic” by the commercial foods camp. Although I’m always happy to share my experiences and ideas about canine nutrition, I don’t shove my way down anyone’s throat. I usually recommend several books representing a number of approaches to canine nutrition, and suggest that people experiment and see what they like best and what works well for their pets. To me it makes sense, but there’s a problem with that seemingly reasonable approach.
David Brock, in The Republican Noise Machine, points out that television news shows often bring on a conservative guest to represent one side of an issue, and then “balance” that with a supposedly “liberal” guest from the world of journalism or academia. The journalist or professor takes each issue separately, looks at it from all sides, and expresses her viewpoint in a way she perceives as objective. The conservative guest will relentlessly and often powerfully deliver the message d’jour of the conservative movement, while the supposedly liberal guest appears weak and uncommitted, exemplifying the famous quote by Robert Frost, “A liberal man is too broad-minded to take his own side in a quarrel.”
At some point in the raw diet debates, what I see as my broad-mindedness and objectivity come across as an unwillingness to take a stand, a loathsome form of wishy-washiness. It’s frustrating, because I’m allergic to gurus and would rather people make their own decisions than adopt mine, even if their decision is, in my view, the wrong one. So, what to do?
Those on both sides could learn a thing or two about framing the debate from Lakoff. We need to use terms that will be helpful to the seekers, those swing voters of the dog food wars, and stop using language that triggers fear. Extremists arguing either way, sometimes deliberately and sometimes unconsciously, use fear to get people to do what they think they should do, and the only ethical course is to stop. Stop telling them they are killing their dogs.
Millions of dogs live long, relatively healthy lives eating kibble. It’s just a fact. Their health may not be as good as it could have been, and many of them would have been healthier on a better diet, but a blunt statement that “kibble kills dogs” is going to ring false to nearly everyone who hears it. Just the same, anti-raw fanatics can’t tell me that “raw meat kills pets” when I’ve had so many cats and dogs live long, healthy lives—longer in the case of my Deerhounds then their kibble-fed littermates raised by other people—on raw diets.
Those of us who advocate home-prepared diets need to stop implying that diets based on bones are the only alternative to kibble. Lead people by the hand through easy stages. You can jump from generic grocery store kibble to whole prey carcass in one step, but hardly anyone does, or will. Many of us started out slowly, adding fresh foods to commercial foods, improving the commercial foods we used or switching to cooked homemade diets, before we started really experimenting with diets based on carcasses and bones and hunks of meat.
The process does matter, because it’s by going through their own process at their own pace that people become invested in preparing their dog’s food themselves. It’s a way for them to build confidence in their ability to feed their pet, and to find ways to make it work with their lifestyle and financial constraints. If they are by nature someone who goes whole hog with new ideas, there is nothing wrong with making the big leap—but there is also nothing wrong with crawling before you walk and walking before you run. Be gentle.
We also need to take a long, hard look at the words we use. We can use terms like “nutritious home-prepared diets” instead of “the raw diet.” (Since there is no monolithic “raw diet,” such a phrase is meaningless anyway.) We can use terms like “fresh,” “variety” and “wholesome” to talk about the kind of diets we advocate. We can defuse 90 percent of the criticism of raw and/or homemade diets by simply changing our terms. Specifying the diet be nutritious and wholesome somewhat inoculates the seeker from being told they are feeding an unbalanced or contaminated diet.
Of course, in the end, the pro-raw and anti-raw dog owners will not agree, any more than conservatives and progressives do. Still, before you enlist in the “Red Dog/Blue Dog” wars, consider the power of a few well-chosen words, and at least raise the level of the debate—good advice in politics as well as dog food.
News: Guest Posts
Be sure where it comes from
There’s a new concern about fish, and once again, labels won’t clear it up. The hidden ingredient in some pet food is slave labor used to harvest small forage fish like mackerel. A New York Times expose of brutal conditions on Thai fishing ships describes the link to several top brand U.S. pet food companies.
Why not just skip Thai fish? Many would if that information was on the label, as it is with seafood meant for humans. But country of origin doesn’t apply to pet food rules. So where the fish or fishmeal is from isn’t likely to be announced on labels or packages. The difficulty tracking each link in the global seafood supply chain can even leave manufacturers in doubt. The article says bar codes on pet food in some European countries let consumers track Thai seafood to the packaging facilities. But prior to processing, the global supply chain for forage fish, much of which is used for pet and animal feed, is “invisible.”
Given the unsavory news, not to mention the topic of fishing the oceans to extinction, any amount of Thai fish is likely to be too much for many shoppers.
AAFCO, the governing (though not regulatory) body for the pet food industry notes that FDA pet food regulations “focus on product labeling and the ingredients which may be used.” Where those ingredients originate is left out.
That’s why some shoppers look for “alternative” certification labels from organic to Fair Trade, and put their faith in U.S. companies that aim to exceed regulatory standards. For example, Honest Kitchen, which sells human food-grade products, states on its website that suppliers guarantee their statement of country of origin. (Another promise is that no ingredient is from China.) The company is a member of Green America that promotes companies that operate in ways that support workers, communities and the environment.
As for buying dog food with fish sourced from non-Thai waters, some pet food companies do state where the fish is sourced. But many manufacturers have a long way to go to make the process transparent and easy enough for consumers to find their ingredient sourcing. (We highly recommend calling pet food companies and asking for this information to be more readily available!)
Advertising terms like “holistic” (meaning the whole is greater than the sum of the parts) and “biologically appropriate” (referring to meat-content for carnivores) say nothing about origin.
Even pet food regulators admit that pet caretakers “have a right to know what they are feeding their animals.”
So if in doubt where the fish is from, ask the company behind the bag or can. That much—the manufacturer’s name and address—is required on labels.
And some say, why should pet food buyers beware the global supply chain? With some research on a dog’s protein, calcium and other basic needs, it’s more possible than ever to get it right with a home-made diet rich in “human food” or even home-cooked table scraps. In fact, local food waste is a problem with plenty of solutions.
Wellness: Food & Nutrition
What we feed our seniors has a nose-to-tail affect on their quality of life.
We are what we eat, or so the saying goes, and the emerging science of nutrigenomics (nutrition + genome), puts this adage to the test. Nutrigenomics is the study of how the foods we and our pets eat “speak” to our cells to regulate gene expression, which in turn plays a role in determining if we’re healthy or plagued by illness. In this article, adapted from Canine Nutrigenomics: The New Science of Feeding Your Dog for Optimum Health, by W. Jean Dodds, DVM, and Diana Laverdure, MS, the authors consider the ways that applying related discoveries in nutrigenomics can help our dogs gain or retain quality of life as they move into their senior years.
Which ingredients are proven to ramp up cognitive activity in aging dogs? Researchers at the University of California, Irvine, fed their dogs vitamins E and C (antioxidants) along with a mixture of fruits and vegetables to reduce free radical damage. They also included alpha-lipoic acid and L-carnitine (mitochondrial cofactors), which improve the function of aged mitochondria—specialized parts of cells that produce most of a cell’s energy—in their diets. The result? According to the study report, the diet resulted in a significant improvement in the ability of aged (but not young) animals to acquire progressively more difficult learning tasks (Cotman et al. 2002).
Other important nutrients also show the ability to improve cognitive function in senior dogs. Among the most studied: milk thistle, phosphatidylserine (a phospholipid), SAMe (s-adenosylmethionine), medium-chain triglycerides (MCTs) found in coconut oil, and DHA and EPA omega-3 fatty acids (Milgram et al. 2002, Landsberg et al. 2011, Bensimoun 2013).
Many functional nutritional ingredients don’t just benefit one part of the body; they promote health across a wide range of systems. This, of course, makes sense because the body is not made up of isolated parts (as many Western medical specialists would like us to believe); it contains an intricately related set of systems that all perform a complex, wonderfully intertwined dance. Coconut oil, omega-3 fatty acids and many of the other functional ingredients target the body holistically, producing a wide range of benefits from head to toe—or, in the case of dogs, from nose to tail.
Coconut oil possesses many therapeutic qualities, but perhaps the most amazing is its scientifically proven ability to improve brain function in older dogs and people. As the body’s supercomputer, the brain requires a lot of energy, most of which is satisfied when the body breaks down glucose from food. However, as we age, we metabolize glucose less efficiently, leaving a gap in the brain’s energy requirement.
When this occurs, alternative sources of fuel become important to fill this gap and provide much-needed energy to the brain. This is where medium-chain triglycerides (MCTs), such as those contained in coconut oil, can help save the day. Unlike regular fats (which the body metabolizes slowly), MCTs break down and absorb rapidly into the bloodstream, providing a quick source of non-carbohydrate energy.
Further, they readily cross the blood-brain barrier, supplying up to 20 percent of a normal brain’s energy requirement; are important for ketone production, which serves as an additional source of “brain food”; and help the body use omega-3 fatty acids more efficiently and increase omega-3 concentrations in the brain—a good reason to give your dog both omega-3s and coconut oil (Aldrich 2009, Laflamme 2012, Wolf 2009).
One study showed that when 24 Beagles who were between the ages of 7.5 and 11.6 years old at the start of the trial were fed a diet supplemented with 5.5 percent MCT, their cognitive ability improved significantly. The dogs showed improvement in learning-related tasks after only about two weeks of consuming the supplemented diet, and within one month, their learning ability improved significantly. The study’s authors concluded that supplementation with MCTs can improve age-related cognitive decline by providing an alternative source of brain energy (Pan et al. 2010).
In addition to its brain-boosting qualities, coconut oil is purported to provide a host of other benefits. It contains antiviral, antimicrobial and antifungal properties; helps with weight loss (MCTs increase metabolism, so they send signals of satiety and cannot be stored as fat), improves digestion and absorption of fat-soluble vitamins, benefits the skin and coat, and provides a rapid form of non-carbohydrate energy (Aldrich 2009, Wolf 2009).
The coconut oil you select should be unrefined (virgin) and expeller- or cold pressed. Processed, heat-treated foods lose their natural life-giving nutritional force. If possible, choose organic brands to avoid potential contamination from pesticides.
Coconut oil does not need to be stored in the refrigerator, but since it is light sensitive (like all oils), it’s best to keep it in a dark cupboard. Dark glass containers are excellent storage choices, as they protect the oil from light while also ensuring that no bisphenol-As (BPAs) leach into the product.
There are many ways to incorporate coconut oil into your dog’s diet. Try mixing a tablespoon into some goat- or sheep’s-milk yogurt, or adding a dollop on top of some fresh organic blueberries. You can even scoop it straight from the container and let him lick the spoon. Dogs love the taste!
Studies show that coconut oil fed as 10 percent or less of your dog’s diet poses no digestive or other health issues (Aldrich 2009).
The omega-3 fatty acids DHA and EPA fight obesity, decrease inflammation, combat arthritis and cancer, and promote overall health, so it should come as no surprise that DHA and EPA also benefit brain health—especially since the brain is made up of as much as 60 percent fat (Mercola 2012).
About 20 percent of the brain’s cerebral cortex (the outermost layered structure of neural tissue) is made up of DHA, which also provides structural support to neurons (the cells that make up the central nervous system). Studies in people show that supplementation with DHA is beneficial in supporting cognitive health in aging brains, and that inadequate levels can cause neurons to become stiff, hindering proper neurotransmission both within and between cells (Mercola 2012, Yurko-Mauro 2010).
A study of 48 Beagle puppies showed that dietary fortification of fish oil rich in DHA following weaning resulted in improved cognitive learning, memory, psychomotor, immunologic and retinal functions during the developmental stage. The high-DHA food also contained higher concentrations of the antioxidant vitamin E, taurine, choline and l-carnitine, which may also have played a positive role on the puppies’ development (Zicker et al. 2012).
EPA, along with DHA, can also benefit mood. As anyone who has cared for an elderly relative or friend knows, depression is a common side effect of age-related cognitive decline. EPA from marine sources such as fish oil can decrease cytokines associated with depression (Mercola 2012).
Silibinin extracted from the seeds of the milk thistle plant shows tremendous promise as a therapeutic agent to treat cancer, but its benefits don’t stop there. It also prevents impairment of both short-term memory and recognition memory in mice injected with a highly toxic peptide fragment called Aβ25–35, which exerts neurotoxic properties. Silibinin works as an antioxidant, protecting the hippocampus (the part of the brain associated with memory) against oxidative damage caused by this powerful neurotoxin (Lu et al. 2009).
Phosphatidylserine is a phospholipid, a class of lipids (fats) that makes up a major part of cell membranes. Synthetic phosphatidylserine was once derived from cows’ brains, but due to concerns about mad cow disease, it is now manufactured primarily from soy lecithin.
Until November 2004, the FDA held the position that phosphatidylserine showed no benefit in people with cognitive dysfunction, citing a lack of credible scientific evidence. However, on November 24, 2004, they changed their position. In a document titled “Letter Updating the Phosphatidylserine and Cognitive Function and Dementia Qualified Health Claim,” the FDA acknowledged studies demonstrating the beneficial effects of phosphatidylserine for individuals at risk of dementia and cognitive dysfunction, and admitted that there is “credible evidence” for its use.
Senilife, manufactured by Ceva Animal Health, combines phosphatidylserine with ginkgo biloba, vitamin E, pyridoxine (vitamin B6) and grape-skin extract. According to the company’s studies, Senilife improves several signs of canine cognitive dysfunction (CCD), decreasing sleeping problems, apathy and disorientation, and increasing playful behavior and response to commands. According to Ceva, dogs began showing improvement within seven days of taking Senilife (Straus 2012).
DNA methylation is an important epigenetic signaling tool for normal gene expression. SAMe (s-adenosylmethionine) is the brain’s major methyl donor and is responsible for forming a variety of compounds, including proteins, nuerotransmitters, phospholipids, glutathione, myelin, coenzyme Q-10, carnitine and creatine (Brogan 2013, Messonnier n.d.).
SAMe also improves neuron membrane fluidity and increases levels of serotonin and dopamine metabolites (Messonnier n.d.). In several human studies, reduced SAMe concentrations were detected in the brains of patients with Alzheimer’s disease, indicating that a methyl-group deficiency in the central nervous system may play a part in causing the disease (Bottiglieri 2002). Supplementation with SAMe has also been shown to effectively reduce the symptoms of depression in people—and might even be as beneficial as some prescription antidepressants.
Novifit, a SAMe supplement manufactured by Virbac Animal Health, has undergone testing in senior dogs with signs of CCD. Novifit showed favorable results beginning after just one month of testing on client-owned dogs, including a 44 percent reduction in problem behaviors, including a reduction in house soiling, after both four and eight weeks (compared to 24 percent in the placebo group); marked improvement in activity and playfulness; significant increase in awareness; and decreased sleep problems, disorientation and confusion. A separate study on laboratory dogs supplemented with Novifit showed improvement in cognitive processes, including attention and problem solving (Straus 2012).
Denosyl, manufactured by Nutramax Laboratories, is another SAMe product marketed to support liver and brain health.
SAMe works in conjunction with the methyl donors folate and vitamin B12, so supplementing with a B-complex vitamin is also advised. People with bipolar disorder, migraine headaches, Parkinson’s disease and active bleeding, as well as those on prescription antidepressants, should not take SAMe. While the contraindications in dogs are not known, similar precautions should be followed. We advise starting with a very low dose and monitoring your dog for adverse effects, which in people have been noted to include anxiety, restlessness, insomnia and mania (Messonnier n.d.).
Antioxidants also benefit the cognitive health of senior dogs. Anthocyanins, the phytochemical compounds that give berries their pigment, are a rich source of antioxidants. Anthocyanins can protect against—and even reverse—declines in cognitive function due to age-related oxidative stress (Joseph 1999, Lila 2004, Mercola 2012).
Anthocyanins are credited with enhancing memory, helping prevent age-related declines in neural function, and modulating cognitive and motor function (Lila 2004).
And here’s a reason to consider removing gluten from your senior dog’s diet: gluten sensitivity in people has been linked with impairment of brain function, including learning disabilities, attention-deficit-hyperactivity disorder (ADHD) and memory problems. Gluten sensitivity may even manifest exclusively as a neurological disease, without any gastrointestinal (GI) symptoms.
The link between gluten sensitivity and impairment of brain function makes perfect sense, according to David Perlmutter, MD, FACN, ABIHM, a board-certified neurologist and fellow of the American College of Nutrition as well as the author of Grain Brain: The Surprising Truth about Wheat, Carbs, and Sugar—Your Brain’s Silent Killers.
Perlmutter points out that the body’s antibody response to gliadin, a protein in gluten, results in elevated levels of inflammatory cytokines that are present in Alzheimer’s disease and other neurological conditions, such as Parkinson’s, multiple sclerosis and autism. The last thing your aging dog needs is a cascade of brain-related inflammation. For this and many other reasons, we advise removing gluten from your dog’s diet.
We’d also like to point out an important non-nutritional aspect of canine cognitive health: mental stimulation. Just as with humans, dogs “use it or lose it” when it comes to their cognitive ability. And, while your canine companion can’t pick up the latest New York Times crossword puzzle, he can engage in a variety of mentally challenging “dog brain games.”
Don’t for a second believe the old adage, “you can’t teach an old dog new tricks.” It’s not true! Old dogs are wonderful students, and most love to learn. There are lots of great books and articles with fun tricks you can teach your dog, which will not only help keep his brain young, but will also add a new dimension to your relationship and deepen the bond the two of you share.
Adapted from Canine Nutrigenomics: The New Science of Feeding Your Dog for Optimum Health (Dogwise Publishing). © 2015 by W. Jean Dodds, DVM; Diana R. Laverdure, MS. Used with permission.
For about a year, I’ve been supplementing our dogs’ quality kibble with homemade turkey burgers (along with whole-wheat pasta and cooked vegetables). Our three dogs eat twice a day; at each meal, our largest dog (45 pounds) gets half a burger, while the two smaller ones (30 and 25 pounds) roughly share the other half.
I developed the recipe myself, and while I tried to cover the bases in terms of appropriate canine nutrition, I had no particular agenda in mind—I mostly just wanted to make our dogs’ meals a little more interesting for them. Curious about the burgers’ nutritional value, I turned to Roschelle Heuberger, PhD, RD, professor at Central Michigan University and devoted Akita person, to find out how my culinary experiment stacked up.The Recipe
Makes approx. 36 3-inch patties, each about 3.5 ounces
Total prep time: 20 minutes
Total cooking time: 1 hour
Preheat oven to 400°
Mix well, making sure all the ingredients are completely incorporated. Shape into 3-inch patties, place on lightly oiled (with spray oil), rimmed baking sheet(s). Optional: Spread little ketchup (about 1/8 tsp.) on top of each patty.
Bake 45 minutes to 1 hour. A longer baking time will produce a drier and easier-to-crumble burger.
Tip: Deglaze the baking sheet with water, which makes a great gravy that can be used to moisten the meal. This recipe makes around 1 1/2 to 2 cups of this gravy. It’s also an easy way to help clean the baking pan.The Analysis
By Roschelle Heuberger, PhD, RD
There is much controversy within the veterinary nutritionist community about commercial pet food and home cooking. And, since manufacturing standards for canine food are so much different than those we apply in our own kitchens, it’s difficult to make an “apples-to-apples” comparison. Nonetheless, using proprietary nutrition software, it’s possible to determine the relative values of the major food components of Claudia’s recipe with those found in commercially produced dog food (in parens).
Analysis (per patty)
Note: All measurements are given in terms of 100 kilocalories (kcals) against measurement standards used by commercial food manufacturers.
Protein: 7.5 grams (8 grams is considered high protein)
Calories: 5.3 kcals (5 or more kcals is considered high calorie)
Fat: 2 grams (a low-fat food contains less than 2 grams, so this is neither high nor low)
Sodium: 30 mg (anything less than 100 mg per serving is considered low-sodium)
Fiber: 0.75 grams (neither high nor low)
Moisture loss with one hour covered cooking time is approximately 10 to 15 percent. High heat and long cooking time will destroy 90 percent of the thiamin and up to 50 percent of some of the other B vitamins in the burgers. On the bright side, it will also kill pathogens, so you don’t have to worry about the contamination that’s a concern when it comes to undercooked meats.
Used as a “topper” to both to increase palatability and provide calories, protein and other nutrients, the turkey burger is a great addition to a complete commercial dog food. Feeding turkey burgers as toppers may also be helpful for older dogs, who often have poor appetites, or dogs who have been ill or malnourished. In those cases, the turkey burger need not replace the commercial food, but rather, could be fed in addition to it.
As the recipe is given, it would not be advisable to feed turkey burgers as the sole source of nutrition because they may be too high-calorie for some dogs, and also because they’re missing some of the other nutrients dogs need. Obesity is becoming an epidemic among dogs, as it is in humans. Caloric restriction and regular exercise are important for weight maintenance, particularly as a dog ages.
As always, choose the best commercial food you can afford. To educate yourself on the options and issues, try out one of the online dog food evaluators; Dogfoodadvisor.com is a good place to start.
The Background: Canine Nutrition
Dogs, who are omnivorous, require the same sorts of major nutrients—proteins, carbohydrates and fats, and vitamins and minerals—as human omnivores, but in different ratios. For example, they have an absolute requirement for linoleic acid, an essential fatty acid, and for nearly a dozen amino acids, the building blocks of protein. These amino acids range from the complex (arginine and phenylalanine) to simple (leucine and valine).
We and our four-legged companions get all 22 amino acids from protein sources such as eggs or meats, which contain varying percentages of each one. Some protein sources contain most of them, others only a fraction. Meats, eggs and fish are among the best sources of complete amino acids, and their proteins are highly digestible; this means that the amino acids are absorbed more readily from the gut.
Standards for minimal nutritional composition of food for dogs are based on percentages, which are determined by a dog’s physiological status; the percentages are higher for dogs during growth, reproduction and lactation stages, and increase as the weight of the animal increases. Usually, the amount fed to achieve the minimal percentages required for maintenance of normal physiological function in the dog is based on dry matter per kilogram of body weight. That is why labels that show the number of cups of food to be fed per day base the measurement on the size of the dog. Companies formulate their foods to provide a specific amount of protein, linoleic acid, and calcium-to-phosphorus ratio.
If you’re cooking for your dog and want to do your own analysis, a number of websites allow you to do that, but none can be considered foolproof. For example, there’s the USDA Nutrient Database. This is a food calculator only, and doesn’t contain information on ingredients that one might use in a dog-food recipe, such as eggshells (a free web calculator that includes eggshells can be found here: nutritiondata.self.com).
Healthy home-cooked meals for your dogs
In the April/May 2011 issue of The Bark, we interview Barbara Laino about the nutritional benefits of feeding your dog home-cooked meals in addition to, or in lieu of, commercial dog food (see “Home Cooking with Barbara Laino” April/May ’11). Here are two more recipes cooked up at Laino’s Midsummer Farm in Warwick, N.Y., that are sure to please your pup’s taste buds and keep her healthy:
Homemade Dinner Recipe for Dogs
This recipe feeds 2-3 large dogs for 7-10 days.
Grind the following ingredients in a meat grinder. Alternate ingredients so the grinder does the mixing for you. For instance, grind six necks, one carrot, a handful of pumpkin seeds, then six more necks and so on. Mix with a large spoon as you grind.
Add a couple of the following items. Have these ready on hand as you are grinding and add a sprinkle here and there of each so you can thoroughly mix the batch of food.
After grinding and mixing all ingredients thoroughly, keep the food in a sealed container in the refrigerator.
Midsummer Farm Homemade Fish-Based Dog Dinner
(The below recipe is for 1 medium dog for 3 days, about 10 1-cup-size meatballs) This recipe can be made in larger batches for efficiency sake. This raw food can easily be frozen in meatball shapes appropriate for the size animals you are feeding.
Serving Sizes of Raw Meatballs:
Keep in a well-sealed container in fridge. Scoop out appropriate amounts for your pet, or if you made a very large batch that is more than can be consumed in about 5 days, roll into meal-sized meatballs and freeze. Then you can just take out whatever number meatballs you need and defrost them a couple days before you need to feed them. Meatballs will last at least 3 months in the freezer.
To learn more about homemade dog food and its many benefits, see our interview with Barbara Laino.
Note: We've omitted the garlic originally in this recipe.
Wellness: Food & Nutrition
The Well-Oiled Dog
Winter weather can be a refreshing change of pace, but at the same time, low humidity and home heating can dry out your dog’s skin and coat. While we humans might opt for topical moisturizing creams and lotions, our fine canine friends do best when they’re well oiled. The healthiest fix for your dog’s winter dandruff and dry skin problems is to add oil to his diet. You don’t have to run out and purchase special oils; two of the best, olive and coconut, are easy to find in supermarkets and health food stores. I recommend them for glowing skin and coat and general health.
Let’s begin with olive oil. I particularly like cold-pressed extra-virgin olive oil for cooking. Many commonly used oils break down at high heat, which can affect digestibility. Olive oil does not, making it the preferred oil to use when cooking for your dog. Rich in antioxidants, especially vitamin E, and phytonutrients, olive oil is best stored in the refrigerator to keep it from being degraded by heat and light. It tends to harden during refrigeration, but will liquefy when allowed to warm up to room temperature. If you simply want to add olive oil to your dog’s meal, use a teaspoon a day for a 30 to 40 lb. dog, or up to a tablespoon for a large 90 lb. dog.
To keep a dog’s coat soft and rich, coconut oil is my favorite. Plus, it decreases “doggy” odor; even dogs with a musty scent begin to smell sweet. Coconuts are classified as a “functional food,” and their oil provides many benefits beyond its super-healthy nutritional content. The secret to this oil’s healing power is its medium-chain fatty acids, which have special healthgiving properties. The fats in coconut oil are similar to those in mother’s milk, and they have similar healing attributes. Aside from human breast milk, coconut oil is nature’s most abundant source of lauric acid, which has been used to kill viruses, bacteria and yeast as well as prevent tooth decay. It also supports thyroid function and enhances metabolism. Dogs love coconut oil on their food as a condiment. One-half to one teaspoon daily for a medium-sized dog (30 to 40 lbs.) is an average portion. Coconut oil should also be refrigerated.
Supporting your dog’s biological terrain is the single most important way to maintain his well being and help him have healthy skin and a great coat. Both olive and coconut oil are healthy for your dog’s insides, and it will show on his outside. The well-oiled dog will have soft skin and a coat that shines all winter long.
Fast, easy and nutritious turkey feast.
It doesn’t have to be Thanksgiving to give thanks! Working in animal rescue, I’ve seen a lot of heartbreak, but I’ve also seen and experienced the love that a rescued animal can bring to a human and vice versa. Each one of my rescued dogs gives me so much joy and love every day—cooking for them and making sure they are healthy is the least I can do to say thanks. This recipe is chock-full of nutritious and delicious ingredients that help keep your beloved pup healthy and happy.
Makes 4 servings for a 50-pound dog
2 tbsps. olive oil
1. In a large sauté pan, heat 1 tablespoon of the olive oil over medium low heat. Add the turkey and cook until it is browned. Drain any excess fat and set the turkey aside to cool.
2. Prepare the barley as directed on the package. Set it aside to cool. You should have about 1 cup of cooked barley.
3. In a large sauté pan, heat the remaining 1 tablespoon of olive oil over medium-low heat. If using the garlic, add it and sauté until it is lightly browned, about 3 minutes. Add the spinach and sauté, stirring frequently until wilted, about 5 minutes. Remove the pan from the heat and let cool.
4. Once cooled, puree the spinach and garlic mixture in a food processor and set it aside. You should have about a 1⁄4 cup of spinach puree.
To Make One Serving
1 1/3 cups cooked ground turkey
In your dog’s bowl, combine the turkey, barley, spinach puree, with beef heart, pumpkin, salmon oil and parsley. Refrigerate any leftovers in an airtight container for up to 3 days.
For a serving chart of proportions for different size dogs, see bowmeowraw.com
Home Cooking for Your Dog by Christine M. Filardi © Stewart, Tabori & Chang, 2013
Note: We've omitted the garlic originally in this recipe.
Wellness: Food & Nutrition
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