Art and design

Books

Culture

Environment

Fashion

Film

Life and style

Money

Music

Politics

Science

Technology

Travel

Television

US news

World news

Scientists criticise trend for raw meat pet food after analysis finds pathogens

Researchers say there is no evidence of health benefits for dogs and cats from a raw meat diet, and that it can cause injuries, growth problems and illness.
Researchers say there is no evidence of health benefits for dogs and cats from a raw meat diet, and that it can cause injuries, growth problems and illness. Photograph: Alamy

The trend for feeding dogs and cats raw meat has been criticised by scientists, who say it often contains bacteria and parasites that could pose dangers to both pets and their owners.

A growing trend has seen pet owners plump for products such as meat, bones and organs which can be bought frozen and then thawed before being fed to dogs and cats.

Among the ideas fuelling the movement is that these diets are more “natural” for pets, avoid problems of additives or contamination in processed food, and can help to tackle issues like skin problems and allergies.

But researchers have pushed back, saying there is no evidence of such health benefits and that raw meat diets can cause dental and gut injuries as well as growth problems in pets – the latter a result of a deficiency in certain nutrients, a particular issue with home-prepared raw meat diets.

The latest study flags a further concern: pathogens.

“We see that more and more people are feeding [cats and dogs] this kind of product and we know that meat is infected with bacteria and parasites,” said Paul Overgaauw, co-author of the new research from Utrecht University in the Netherlands.

With many studies focused on North America, Overgaauw said it was necessary to look at the situation in Europe.

Writing in the journal Veterinary Record, the researchers describe how they analysed samples from 35 raw meat diet products across eight brands available in the Netherlands – a country where more than half of dog owners are thought to feed their dog, at least in part, with raw meat.

After thawing the meat, the scientists looked for the presence of salmonella, listeria, E coli and antibiotic-resistant E coli as well as two types of parasites: species of Sarcocystis and Toxoplasma gondii – a parasite that, among its risks can cause problems in babies.

The results reveal that 23% of the products tested contained a type of E coli that can cause renal failure in humans, while 80% of products across seven brands contained antibiotic-resistant E coli.

Moreover, species of listeria were found in more than half of products, while salmonella species were found in 20%, species of sarcocystis in 23% and Toxoplasma gondii in 6%.

Overgaauw noted that while the parasites are rendered harmless by freezing, bacteria are not, and that both posed a risk in home-prepared raw meat diets – not only to the pet but owners as well, either directly, as a result of cross-contamination of human food, or through exposure to pathogens shed by the animals. As well as calling for increased awareness, the authors suggest that raw meat diets should be labelled to highlight the risks.

Daniel Chan, professor of emergency and critical care medicine and clinical nutrition at the Queen Mother Hospital for Animals, who was not involved in the research, said the new study added to a growing body of evidence on raw meat diets for pets.

“We have known that there are risks associated with raw meat feed diets since the early 2000s, but this is the first [research] in Europe that has gone as far as to check commercially available frozen raw meat diets,” he said.

Chan added that the study was important as it showed that buying commercial, frozen products rather using than home-prepared food, did not circumvent the dangers of pathogens. “The most concerning from our public health point of view is that they are finding multi-drug resistant bacteria in the food source,” he said.

“If you buy mince from a supermarket you are likely to have bacteria, but because you cook it you are not at risk,” added Chan, pointing out that commercial raw meat diets were not designed to be cooked because it could break down supplements that have been added to them.

Chan stressed that vets should discuss the risks of raw meat with owners, adding that it was not yet known what the best precautions were.

“There hasn’t been any evidence to show [if] an animal has an allergy problem, that allergy is best treated with raw food products,” he added. “We don’t have any scientific evidence to support those claims.”

This article titled "Scientists criticise trend for raw meat pet food after analysis finds pathogens" was written by Nicola Davis, for The Guardian on Friday 12 January 2018 06.30am

Science

Can a DIY fertility test help you plan when to have a baby?

My sisters, aged 27 and 30, are seated at their computers poring over the slick websites of… Read more

Two planets in unusual star system are very likely habitable, scientists say

Scientists have identified two planets circling round a dim dwarf star as especially likely… Read more

Remember Pioneer 10? Test your knowledge of space probe missions

Fifteen years ago today, scientists at Nasa received the final faint signals from Pioneer 10, the… Read more

Georgetown in northern Queensland once part of North America – geologists

Geologists in northern Australia have made a discovery that suggests the area around Georgetown in… Read more

Hot or not? Bikram no more beneficial than any other yoga, says vascular study

While the popularity of practising yoga in sweltering rooms is booming around the world,… Read more

How do you sex a fossil? | Elsa Panciroli

“It was a slit, like this,” Vinther held his cupped hands side by side and opened and closed them,… Read more

Paw choice? Cats show right and left-hand preferences

Whether stalking down the stairs or tiptoeing into the litter box, cats have a preference for which… Read more

Mixing herbal remedies and conventional drugs 'could be harmful'

Herbal remedies such as St John’s wort, ginseng and ginkgo biloba could have harmful interactions… Read more

Starwatch: the moon and a pair of star clusters

The Moon approaches two star clusters on the evening of 26 January. Both clusters are located in… Read more

Blood test could use DNA to spot eight of the most common cancers, study shows

Scientists have made a major advance towards developing a blood test for cancer that could identify… Read more