This is Fine Rule
This is Fine Rule
EDIT: here's a source for that figure
Previous studies have estimated that 73% of all antimicrobials sold globally are used in animals raised for food
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7766021/pdf/antibiotics-09-00918.pdf
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Can someone explain why antibiotics are used in the meat industry? Are lots of animals dying to bacterial infections so they need antibiotics to aid the yield, or are antibiotics incidentally also growth hormones, or something else? Always been curious
Both of the two. The two main reasons are that it incidentally boost growth and there are lots of circulating diseases due to heavy overcrowding conditions. Note that the use is not on those who are sick, but to everyone even if they show no symptoms
Antibiotics are administered to animals in feed to marginally improve growth rates and to prevent infections, a practice projected to increase dramatically worldwide over the next 15 years.There is growing evidence that antibiotic resistance in humans is promoted by the widespread use of nontherapeutic antibiotics in animals.
Don't worry, it gets worse! Certain farmed animals are particularly susceptible to infections like shrimp and oysters. These animals are kept in open water pens and antibiotics are routinely DUMPED INTO THE OCEAN to protect the stock, naturally contaminating the ocean at large and giving bacteria in the wild just enough exposure to antibiotics to develop resistance.
If you want to support responsible antibiotic use, avoid all farmed shellfish, don't buy any meats from India or China, and only buy free range chicken; these are the biggest global offenders. If you're European, avoid meats from Greece or italy.
Sorry I'm too lazy to look up a source, but the way I've heard it explained is that while they might occasionally give them to sick animals as a sort of panacea, they often just give all of them a low dose. Apparently it like, makes their immune system not have to work as hard so they gain weight faster. Which is basically textbook how to make resistant bacteria.
On top of the other answers, animals are more likely to get sick if they get cramped together in extremely tight spaces, facilitating the spread of diseases, and meat industries do systematically cramp animals together because it's economically efficient, at the detriment of both the animals and the quality of the meat.
One of the biggest reasons is because cattle growers (especially in North America) feed their cows corn instead of grass or other things that cows actually evolved to eat. They do this because long standing US government subsidies on corn production mean that it can be sold for less than the cost of production; the farms are literally paid to grow it. This is also why high fructose corn syrup is in everything you eat. The corn makes the cattle sick, so the farms pump them full of antibiotics, because that's cheaper than just feeding them properly.