Pet food

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A supermarket's pet food aisle in Brooklyn, New York Pet Food Aisle.jpg
A supermarket's pet food aisle in Brooklyn, New York
Cat food in a bowl. Cat Food.jpg
Cat food in a bowl.

Pet food is animal feed intended for consumption by pets. Typically sold in pet stores and supermarkets, it is usually specific to the type of animal, such as dog food or cat food. Most meat used for animals is a byproduct of the human food industry, and is not regarded as "human grade". [1] Examples of foods for pets would be canned foods and dry mix. [2] Pet food production has environmental, land-use and climate change impacts.

Contents

In 2019, the world pet food market was valued at US$87.09 billion and is projected to grow to US$113.2 billion by the year 2024. The pet food market is dominated by five major companies, as of 2020: Mars, Inc., Nestle Purina Petcare, J. M. Smucker, Hill's Pet Nutrition, Inc. (owned by Colgate-Palmolive), and Blue Buffalo Co. Ltd (owned by General Mills). [2]

Industry

In the United States, pet-food sales in 2016 reached an all-time high of $28.23 billion. [3] Mars is the leading company in the pet food industry, making about $17 billion annually in pet-care products. [4] Online sales of pet food are increasing and contributing to this growth. Online sales in the US increased 15 percent in 2015. [5] Worldwide, the compound annual growth rate of pet food purchased online was more than 25% between 2013 and 2018. [6] As of 2015, the U.S. leads the world in pet-food spending. [7]

Impact and sustainability

As of 2018, there are around 470 million pet dogs and around 370 million pet cats. [8] [ better source needed ] Given the carnivorous diets fed to many pets (especially cats and dogs), involving the consumption of an estimated fifth of the world's meat and fish, the impact of pet-food production on climate change, land-use and other environmental impacts becomes an issue. [9] [10] Pet food production is responsible for 20-30% of the environmental impacts from animal production. [11] It has been estimated that global greenhouse gas emissions from dog and cat dry food represents around 1.1%−2.9% of global emissions, an amount close to the total emissions of countries such as Mozambique or the Philippines. [12]

Like humans, dogs are omnivores. [13] [14] [15] [16] There is research on alternative protein sources for pet food including insects and algae. [17] [18]

A life-cycle analysis of contemporary pet foods suggests wet foods for cats and dogs tend to have a larger impact than dry foods. [9] It also suggests there are substantial opportunities for improvement in "all phases of the pet food life cycle, including formulation, ingredient selection, manufacturing processes" and so on. [9]

Fish food

Fish foods normally contain macronutrients, trace elements and vitamins necessary to keep captive fish in good health. Approximately 80% of fishkeeping hobbyists feed their fish exclusively prepared foods that most commonly are produced in flake, pellet or tablet form. [19] Pelleted forms, some of which sink rapidly, are often used for larger fish or bottom-feeding species such as loaches or catfish. [20] Some fish foods also contain additives, such as beta carotene or sex hormones, to artificially enhance the color of ornamental fish.[ citation needed ]

Bird food

Bushtits eating suet from a bird feeder Bushtits Salem OR.JPG
Bushtits eating suet from a bird feeder

Bird foods are used both in birdfeeders and to feed pet birds. It typically consist of a variety of seeds. However, not all birds eat seeds. Nectar (essentially sugar water) attracts hummingbirds. [21]

Cat food

Cat with a bowl of pelleted cat food. Catdryfood.jpg
Cat with a bowl of pelleted cat food.

Cats are obligate carnivores, though most commercial cat food contains both animal and plant material supplemented with vitamins, minerals and other nutrients. Cat food is formulated to address the specific nutritional requirements of cats, in particular containing the amino acid taurine, as cats cannot thrive on taurine-deficient food. [22] Optimal levels of taurine for cat food have been established by the Waltham Centre for Pet Nutrition. [23]

Dog food

Recommendations differ on what diet is best for dogs. Some people argue dogs have thrived on leftovers and scraps from their human owners for thousands of years, and commercial dog foods (which have only been available for the past century) contain poor-quality meats, additives, and other ingredients dogs should not ingest, or that commercial dog food is not nutritionally sufficient for their dogs. Many commercial brands are formulated using insights gained from scientific nutritional studies. [24]

Many dog food manufacturers refer to AAFCO standards to ensure the safety of their dog food.AAFCO is a collaborative organization involving feed control officers and regulatory authorities from the United States and Canada. It plays an important role in ensuring the safety and quality of pet food and animal feed, providing reliable standards for the entire industry.

However, AAFCO itself does not have the authority to create laws. Instead, its standards serve as the basis for individual states, regions, and federal governments in the U.S. and Canada to establish and enforce laws and regulations regarding pet food.

Additionally, based on the recommended nutritional guidelines for dog food and cat food that AAFCO published in 1993, nutritional standards have been set for different life stages (growth stage for puppies and maintenance stage for adult dogs). Many dog food manufacturers now refer to these standards. [25]

Raw feeding

Raw feeding is the practice of feeding domestic dogs, cats and other animals a diet consisting primarily of uncooked meat, edible bones, and organs. The ingredients used to formulate raw diets can vary. Some pet owners choose to make home-made raw diets to feed their animals, but commercial raw food diets are also available. Veterinary associations such as the American Veterinary Medical Association, British Veterinary Association and Canadian Veterinary Medical Association have warned of the animal and public health risk that could arise from feeding raw meat to pets and have stated that there is no scientific evidence to support the claimed benefits of raw feeding. [26] [27]

The practice of feeding raw diets has raised some concerns due to the risk of food borne illnesses, zoonosis and nutritional imbalances. [28] People who feed their dogs raw food do so for a multitude of reasons, including but not limited to: culture, beliefs surrounding health, nutrition and what is perceived to be more natural for their pets. [29] Feeding raw food can be perceived by owners as allowing the pet to stay in touch with their wild, carnivorous ancestry. [29] The raw food movement has occurred in parallel to the change in human food trends for more natural and organic products. [30]

Feeding human foods to animals

Prepared foods and some raw ingredients may be toxic for animals, and care should be taken when feeding animals leftover food. It is known that the following foods are potentially unsafe for cats, dogs and pigs:

Generally, cooked and marinated foods should be avoided, as well as sauces and gravies, which may contain ingredients that, although well tolerated by humans, may be toxic to animals. Xylitol, an alternative sweetener found in chewing gum and baked goods designed for diabetics, is highly toxic to cats, dogs, and ferrets. [33] [34]

Labeling and regulation

United States

In the United States and its associated territories, all pet food is regulated by the Food and Drug Administration (FDA), the United States Department of Agriculture (USDA), and the Federal Trade Commission (FTC). It is further regulated at the state level. [35] State Department of Agriculture officials, major feed manufacturers, and ingredient suppliers form the Association of American Feed Control Officials (AAFCO), a non-government agency that establishes guidelines and standards on feed laws and regulations. Although government officials do comprise a large portion of AAFCO, it has no regulatory authority and acts simply as an advisory body, working closely with the FDA to develop standards that food consumed by animals must meet. AAFCO leaves the responsibility of regulating these standards to the individual states. Most states have adopted the guidelines set forth by AAFCO. [36]

AAFCO requires that all pet food products sold in the United States have labels that contain eight components:

  1. Brand and Product Name: These rules address the use of ingredient names in the product name. How ingredients may be included in the product name depends on the percentage of that ingredient in the product, and the use of certain descriptors. For example, there are different rules for "Beef Dog Food", "Beef Recipe Dog Food", "Dog Food with Beef" and "Beef Flavor Dog Food".
  2. Name of Species for which the pet food is intended: This must be conspicuously designated in words on the principal display panel, but may be included in the product name, such as "Beef Dog Food" or "Salmon Treats for Cats".
  3. Quantity Statement: This is the net weight or net volume, and it must be expressed in the correct units and placed on the lower third of the principal display panel.
  4. Guaranteed Analysis: This lists the percentage of each of the nutrients in the food. The minimum percent of crude protein and crude fat, the maximum percent of crude fiber, and moisture are always required. Note that "crude" refers to the analysis method, rather than the quality of the nutrient.
  5. Ingredient Statement: Ingredients must be listed in order of predominance by weight, on an "as formulated basis". The ingredient that makes up the highest percentage of the total weight as it goes into the product is listed first.
  6. Nutritional Adequacy Statement: This is a statement that indicates the food is complete and balanced for a particular life stage, such as growth, reproduction, adult maintenance or a combination of these, or intended for intermittent or supplemental feeding only. AAFCO makes rules for nutrient levels required for such a statement. Products conspicuously identified on the principal display panel as a snack, treat, or supplement are exempt.
  7. Feeding Directions: All pet foods labeled as complete and balanced for any or all life stages must include feeding directions that, at a minimum, state "Feed (amount of product) per (weight) of dog/cat". Feeding frequency must also be stated. Feeding directions are optional for treats, as long as they are labeled as snacks or treats.
  8. Name and address of manufacturer or distributor: This names the pet food company as guarantor of the product and gives the company's location. If the company uses a separate manufacturer for actual production or distribution, the label must show that relationship by using the words "Manufactured for" or "Distributed by". [37]

Dog and cat foods labeled as "complete and balanced" must meet standards established by the AAFCO either by meeting a nutrient profile or by passing a feeding trial. Cat and dog food nutrient profiles were established by the AAFCO's Feline Nutrition Expert Subcommittee (1991–1992) and the Canine Nutrition Expert Subcommittee (1990–1991), respectively. The nutrient profiles were updated in 2016. [38]

The "Family Rule" allows a manufacturer to have a product that is "nutritionally similar" to another product in the same "family" to adopt the latter's "complete and balanced" statement without itself undergoing any feeding tests. The "similar" food must be of the same processing type; contain the same moisture content; bear a statement of nutritional adequacy for the same or less demanding life stage as the lead product; contain a dry matter, metabolizable energy (ME) content within 7.5% of the lead product's dry matter; meet the same levels of crude protein, calcium, phosphorus, zinc, lysine, thiamine (and for cat foods, potassium and taurine) as the lead food; and meet or exceed the nutrient levels and ratios of the lead family product or the AAFCO nutrient profiles, whichever is lower. The label statement on the similar food can be the same as the lead product if the ME is substantiated by the 10-day ME feeding study. [37]

Critics of the AAFCO standards argue that such requirements are too lax. Generational studies conducted by researchers at University of California, Davis have shown some foods that pass AAFCO's feeding trials are still not suitable for long-term use and estimated that of 100 foods that pass the nutritional analysis, 10 to 20 would not pass the feeding trials. Although maximum levels of intake of some nutrients have been established because of concerns with overnutrition, many still lack a maximum allowed level and some contains large disparity between maximum and minimum values. The NRC accepts that despite ongoing research, large gaps still exist in the knowledge of quantitative nutritional information for specific nutrients. [39] Some professionals acknowledge the possibilities of phytochemicals and other vital nutrients that have yet to be recognized as essential by nutritional science. With such broad guidelines and loose feeding trial standards, critics argue that the term "complete and balanced" is inaccurate and even deceptive. An AAFCO panel expert has stated that "although the AAFCO profiles are better than nothing, they provide false securities." [40]

Certain manufacturers label their products with terms such as premium, ultra premium, and holistic. Such terms currently have no official definitions. The AAFCO is currently considering defining some of the terms. However, the terms "natural" and "organic" do have definitions; [41] e.g., organic products must meet the same USDA regulations as for organic human food.[ citation needed ]

Canada

In Canada, products that pass the Canadian Veterinary Medical Association (CVMA) Pet Food Certification Program, which involves a feeding trial, carry a CVMA label on their packaging. Participation in the program is voluntary. The program was discontinued at the end of 2007. [42] There is no government regulation of pet food manufactured in Canada. However, imported pet food does receive stringent oversight. [43]

European Union

In the European Union, pet food is regulated by the same harmonised standards across the EU, via the Feeding Stuffs Act. [44]

All ingredients used for pet food have to be fit for human consumption according to EU requirements. But regulations require that pet food that contains by-products be labelled as "Not for human consumption" even though such by-products have to be derived from animals declared fit for human consumption. Raw pet food has to be labelled "Pet food only". [45]

Products meant for daily feeding are labelled "complete feedingstuff" or "complete petfood" or other EU languages equivalent. Products meant for intermittent feeding are labeled "complementary feedingstuff or "complementary pet food" while products with an ash content of over 40% are labeled "mineral feedingstuff". Ingredients are listed in descending order by weight. [46]

With the released Commission Regulation (EU) No 107/2013, the European Union has set new maximum levels for melamine in canned pet food. According to results of an in-depth research of the 2007 pet food crisis, melamine used in coatings for pet food cans can migrate into the food. Therefore, the regular melamine migration limit (SML) of 2.5 mg/kg for food and feed has been expanded to pet food. This limit is valid for canned wet pet food on an 'as sold' basis. [47]

The European Union does not use a unified nutrient requirement. [48] A manufacturer committee called FEDIAF (European Pet Food Industry Federation) makes recommendations for cats and dogs that members follow. [49]

2007 recalls

Beginning in March 2007, there were massive recalls of many brands of cat and dog foods. The recalls came in response to reports of kidney failure in pets consuming mostly wet pet foods made with wheat gluten from a single Chinese company, beginning in February 2007. After more than three weeks of complaints from consumers, the recall began voluntarily with the Canadian company Menu Foods on March 16, 2007, when a company test showed sickness and death in some of the test animals. Soon after, there were numerous media reports of animal deaths as a result of kidney failure, and several other companies who received the contaminated wheat gluten also voluntarily recalled dozens of pet food brands. Menu Foods recalled almost over 50 brands of dog food, [50] and over 40 brands of cat food. [51] Nestlé Purina PetCare withdrew all sizes and varieties of Alpo "Prime Cuts in Gravy". [52] [53] Some companies were not affected and utilized the situation to generate sales for alternative pet foods. [54]

2021 recalls

In early January 2021, Midwestern Pet Food products recalled its Sportmix products which were linked to the death of over 70 dogs and sickness in about 80 others. Dog and cat food, sold by retailers across the United States over the internet, were being investigated by the US Food and Drug Administration for the possibility that fatal levels of aflatoxins were present in the food. Midwestern, which is based in Evansville, Indiana, broadened its recall to include all its pet food products manufactured in its Oklahoma facility that contain corn and have expiration dates on or before July 9, 2022. [55]

See also

Related Research Articles

<span class="mw-page-title-main">Taurine</span> Aminosulfonic acid not incorporated into proteins

Taurine, or 2-aminoethanesulfonic acid, is a non-proteinogenic naturally occurring amino sulfonic acid that is widely distributed in animal tissues. It is a major constituent of bile and can be found in the large intestine, and accounts for up to 0.1% of total human body weight.

<span class="mw-page-title-main">Kitten</span> Juvenile cat

A kitten is a juvenile cat. After being born, kittens display primary altriciality and are fully dependent on their mothers for survival. They normally do not open their eyes for seven to ten days. After about two weeks, kittens develop quickly and begin to explore the world outside their nest. After a further three to four weeks, they begin to eat solid food and grow baby teeth. Domestic kittens are highly social animals and usually enjoy human companionship.

<span class="mw-page-title-main">Dog food</span> Food intended for consumption by dogs usually made from meat

Dog food is specifically formulated food intended for consumption by dogs and other related canines. Dogs are considered to be omnivores with a carnivorous bias. They have the sharp, pointed teeth and shorter gastrointestinal tracts of carnivores, better suited for the consumption of meat than of vegetable substances, yet also have ten genes that are responsible for starch and glucose digestion, as well as the ability to produce amylase, an enzyme that functions to break down carbohydrates into simple sugars – something that obligate carnivores like cats lack. Dogs evolved the ability living alongside humans in agricultural societies, as they managed on scrap leftovers and excrement from humans.

<span class="mw-page-title-main">Cat food</span> Food for consumption by cats

Cat food is food specifically formulated and designed for consumption by cats. As obligate carnivores, cats have specific requirements for their dietary nutrients, namely nutrients found only in meat or synthesized, such as taurine and Vitamin A. Certain nutrients, including many vitamins and amino acids, are degraded by the temperatures, pressures and chemical treatments used during manufacture, and hence must be added after manufacture to avoid nutritional deficiency. Cat food is typically sold as dry kibble, or as wet food in cans and pouches.

Raw feeding is the practice of feeding domestic dogs, cats, and other animals a diet consisting primarily of uncooked meat, edible bones, and organs. The ingredients used to formulate raw diets vary. Some pet owners choose to make home-made raw diets to feed their animals but commercial raw diets are also available.

<span class="mw-page-title-main">Dog health</span> Health of dogs

The health of dogs is a well studied area in veterinary medicine.

The Association of American Feed Control Officials (AAFCO) is a non-profit organization which sets standards for the quality and safety of animal feed (fodder) and pet food in the United States. AAFCO is a voluntary organization consisting largely of state officials who have responsibility for enforcing their state's laws and regulations concerning the safety of animal feeds. AAFCO also establishes standard ingredient definitions and nutritional requirements for animal feed/pet food. Most states have adopted the AAFCO models or use them in the regulation of animal feed/pet food. AAFCO meets twice yearly, typically in January and August, so that committees and the board of directors can conduct the organization's business of assessing the need for changes to the Model Bill, model regulations, ingredient definitions, etc. Once per year, the latest version of all AAFCO-approved documents is printed in the organization's Official Publication.

The Nutro Company, Inc., a subsidiary company of Mars Incorporated, is the developer and manufacturer of the Max, Wholesome Essentials, Ultra, Wild Frontier, and Crave brands of dog and cat food, as well as Greenies dental treats. The company is headquartered in Franklin, Tennessee, US.

Beginning in March 2007, there was a widespread recall of many brands of cat and dog foods due to contamination with melamine and cyanuric acid. The recalls in North America, Europe, and South Africa came in response to reports of kidney failure in pets. Initially, the recalls were associated with the consumption of mostly wet pet foods made with wheat gluten from a single Chinese company.

<span class="mw-page-title-main">Cat health</span> Health of domestic cats

The health of domestic cats is a well studied area in veterinary medicine.

<span class="mw-page-title-main">Puppy nutrition</span>

The developmental life stage of dogs requires a specific intake of nutrients to ensure proper growth and development and to meet energy requirements. Despite the fact that puppies have different nutritional requirements compared to their adult counterparts, of the 652 breeders surveyed in the United States and Canada in 2012, 8.7% report feeding puppies commercial diets not intended for the developmental life stage of canines. Large and small dog breeds have even more specific nutrient requirements during growth, such as adjusted calcium to phosphorus ratio, and as such should receive a breed specific growth formula. Feeding diets formulated by a nutritionist for specific breeds and life stage differences in nutrient requirements ensures a growing puppy will receive the proper nutrition associated with appropriate skeletal, neurological and immune development. This includes nutrients such as protein, fibre, essential fatty acids, calcium and vitamin E. It is therefore important to feed puppies a diet that meets the minimum and/or maximum requirements established by the National Research Council.

Oral disease is one of the most common diseases found in dogs. It is caused by the buildup of various anaerobic bacteria in the mouth which forms plaque, eventually hardening into tartar on the teeth along the gum line, and is related to the development of gingivitis. Since small and toy breeds have a much smaller jaw but contain the same number of teeth, crowding allows higher bacterial build up and puts them at higher risk of developing periodontal disease.

High performance sport dogs are those bred and trained to compete in various athletic events. Events include but are not limited to, agility trials, hunting and racing. These events are physically and metabolically demanding. As a result, canine athletes require specialized nutrition in order to perform at high levels during events and for maintenance and recovery. The main nutritional concern for sport dogs is adequate energy. A well-balanced diet, containing the appropriate amounts of protein, fat, carbohydrate, fiber and micronutrients is essential to meet these energy requirements.

Oral health can be difficult for pet owners and veterinary teams to manage in cats, particularly for pets whose owners are not committed to regular tooth brushing and/or dental treats. Oral disease is common among cats, and may lead to other health issues such as bacterial infections of major organs including the heart, kidneys and liver. When pet owners are aware of the benefits of supporting good oral health in cats, this substantially improves positive outcomes. Dietary selection, along with at-home-dental-hygiene care, allows cat owners to influence the oral status of their pets.

Insect-based pet food is pet food consisting of, or containing insects digestible by pets such as dogs or cats. A limited, but growing number of products are available on the market, including insect-based cat food, dog food, and pet treats.

<span class="mw-page-title-main">Senior dog diet</span> Pet foods catered toward senior pets

Senior dog food diets are pet foods that are catered toward the senior or mature pet population. The senior dog population consists of dogs that are over the age of seven for most dog breeds, though in general large and giant breed dogs tend to reach this life stage earlier when compared to smaller breed dogs. Senior dog foods contain nutrients and characteristics that are used to improve the health of the aging dog. Aging in dogs causes many changes to occur physiologically that will require a change in nutrient composition of their diet.

<span class="mw-page-title-main">Allergies in cats</span>

Cats exposed to allergens may develop allergies or allergic reactions. Allergies tend to become evident and intensify over extended periods of time and can take years to develop. Some allergic diseases and allergies in cats include feline atopic dermatitis, flea allergy dermatitis, feline-mosquito hypersensitivity, and food-induced allergy. In the case of feline atopy, hypersensitivity to allergens is due to genetic predisposition. However, various allergies may arise due to environmental factors. Allergens, ingested, inhaled, or airborne, can be seasonal or non-seasonal, similar to allergies in humans. Suspected seasonal allergens include but are not limited to pollen, fleas, and mosquito bites; suspected non-seasonal allergens include but are not limited to plastic materials, food, dust, trees, and grass. After exposure to suspected allergens, symptoms may be immediate or delayed, arising within a few minutes to two hours. Symptoms can include both dermatological and gastrointestinal signs such as itchy skin, hair loss and excessive scratching. In cases of feline atopic dermatitis or atopy in cats, pruritic skin diseases may result; however, signs can also include miliary dermatitis, symmetrical alopecia, and lesions of the eosinophilic granuloma complex.

<span class="mw-page-title-main">Hypoallergenic dog food</span>

Hypoallergenic dog food diets are created for dogs that experience food-related allergies causing adverse effects to their physical health.Super Hypoallergenic is enzymatic hydrolyzed hypoallergenic ostrich protein. The molecules that usually become allergens are intact proteins or glycoproteins. Hypoallergenic dog food diets offer a variety of protein sources that are unique by using proteins that are not recognized by the dog's antibodies as being antigens, minimizing allergic reactions for example Ostrich meat, bones and sinews. Adding novel protein sources, such as novel meats that a dog or its ancestors have never been exposed to is one method. Novel proteins can also be created by chemically modifying well known protein sources using hydrolysis techniques, rendering proteins unrecognizable by the gastrointestinal tract. Not all antigens are specific to proteins, however, and it is possible for anything that the body ingests to become an allergen. Providing diets with a limited amount of ingredients can be used for diagnostic purposes, as well as for dogs who are allergic to the common ingredients that are used in pet food. Certain nutrients are commonly incorporated into hypoallergenic dog food to help alleviate the symptoms of an allergic reaction. These ingredients include omega-3 fatty acids, Vitamins A and E, zinc, novel carbohydrates, and fiber.

In general, cognitive support diets are formulated to include nutrients that have a known role in brain development, function and/or maintenance, with the goal of improving and preserving mental processes such as attentiveness, short-term and long-term memory, learning, and problem solving. Currently, there is very little conclusive research available regarding cat cognition as standardized tests for evaluating cognitive ability are less established and less reliable than cognitive testing apparatus used in other mammalian species, like dogs. Much of what is known about feline cognition has been inferred from a combination of owner-reported behaviour, brain necropsies, and comparative cognitive neurology of related animal models. Cognition claims appear primarily on kitten diets which include elevated levels of nutrients associated with optimal brain development, although there are now diets available for senior cats that include nutrients to help slow the progression of age-related changes and prevent cognitive decline. Cognition diets for cats contain a greater portion of omega-3 fatty acids, especially docosahexaenoic acid (DHA) as well as eicosapentaenoic acid (EPA), and usually feature a variety of antioxidants and other supporting nutrients thought to have positive effects on cognition.

<span class="mw-page-title-main">Vegetarian and vegan dog diet</span> Adequate meat-free or animal-free nutrition

As in the human practice of veganism, vegan dog foods are those formulated with the exclusion of ingredients that contain or were processed with any part of an animal, or any animal byproduct. Vegan dog food may incorporate the use of fruits, vegetables, cereals, legumes including soya, nuts, vegetable oils, as well as any other non-animal based foods.

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