Scientists at the Rowett Research Institute in Aberdeen are concerned about climate change and acknowledge that “cattle and agriculture can be a very serious contributor towards the problem.”
They have been working to develop animal feed which will inhibit the the production of methane, which is 24 times more harmful than carbon dioxide, from the digestive systems of sheep and cows.
So far, they have found that adding fumaric acid (a natural chemical found in plants) to the feed significantly reduces the amount of methane that sheep produce. The fumaric acid traps hydrogen produced by their digestive systems and stops it being turned into methane. The same effect, however, hasn’t been found with cows.
So why is an institute which conducts research to find out ‘how nutriton can prevent disease’ promoting the consumption of red meat, considering the significant health impacts? Wouldn’t it be more consistent with their mission to encourage people to stop eating meat? It would certainly be a hugely better environmental solution.
It’s no surprise that the Rowett Research Institute was co-founded by the North of Scotland College of Agriculture (now the Scottish Agricultural College), whose current chairman was once on the board of Assured British Meat, the vice chairman is a partner and manager of a family beef and sheep farming business and the CEO has also worked in animal agriculture his entire life.
Fumaric acid and malic acid (which are closely related) are already being used in animal feeds. And guess what? Studies have shown that they increase growth rates in animals. In sheep, up to a 27% increase in weight gain was found in those fed feed with malic acid. Weight gain in broiler chickens has been proven to increase when fed fumaric acid. Even dairy cows produce more milk with a diet supplemented with malic acid.
Farmers have been criticised for using antibiotics for fattening their animals and with many governments now illegalising this practice, such as the EU ban in 2006, I am sure many farmers are delighted to have an excuse to add lots of this growth promoting chemical to their feeds.
Then there’s the animal welfare issue. Studies have shown that fumaric acid causes gastric ulcers in humans, as any cause of increase in acidity would. What research has there been about the health impacts of fumaric acid for animals?
In 2001 a report of a 12 year observational study named Typical Clinical Signs Associated with the Addition of Fumaric Acid to Milk Substitutes revealed that when fumaric acid is used in milk substitutes for calves and piglets this produces cardiac and kidney disfunctions and even death. The Scientific Committee on Animal Nutrition produced a report in 2003 to counter this, named The Safety of Fumaric Acid. Although they claimed that there was not sufficient evidence to prove that fumaric acid has caused these results, they admitted that higher than standard doses of fumaric acid are ‘probably nephrotoxic [poisons the liver] after long term use’ and that ‘tubular dysfunctions [ie in kidneys] in calves, even transient, can not be excluded’. They went on to say that they could not impose a limit for fumaric acid ‘due to the lack of knowledge in the absorption rate and in the nephrotoxic potential’.
Fumaric acid is used to treat human psoriasis and has also been proved to have a nephrotoxic affect.
Even if we could safely reduce the amounts of methane that cows and sheep produce, that’s one of many environmental impacts. What about the vast amounts of water used, pollution, disposing of manure, soil erosion, forest destruction? And let’s not forget all those food miles, shipping grain in from half way around the world while others starve. Meat is, and always will be environmentally damaging, unethical and totally inefficient.
” A cow is 90% inefficient. Ninety percent of what she eats goes right back out” said Bill Dunlap, who raises about a dozen beef cows a year in the US.
Let’s stop pandering to the meat industry and move to a plant based diet.