![]() This means that milk and meat from cows treated with Posilac TM are safe for human consumption ( 17).Ī recent study found that regular milk has higher levels of bST than organic milk ( 14). The agency approved the use of bST under the trade name Posilac TM in the 1990s ( 17). The FDA has determined that bST is safe for humans. Many conventional dairy farms administer a synthetic version to produce milk at a lower cost ( 14). For instance, when a cow receives the opioid butorphanol, it cannot be slaughtered for meat for 42 days, and its milk must be discarded for 8 days ( 16).Ĭows naturally produce bovine growth hormone - also called bovine somatotropin (bST) - to regulate milk production. Animals on these farms are often treated with alternative therapies, including botanicals, vitamin supplements, and homeopathic therapy ( 15).Īdditionally, when approved drugs are used on organic farms, the farms must adhere to withdrawal periods. ![]() ![]() This is partly because many medicines are banned on organic farms. Drug residue levels above the FDA’s limit are illegal ( 10, 12).Ī recent study found that, compared with regular milk, levels of antibiotics and pesticides in organic milk were undetectable ( 14). The FDA has established safe levels for drug residues in milk and meat. These can include antibiotics or growth hormones ( 10). Food and Drug Administration (FDA) ( 10, 11, 12, 13).ĭrug residue refers to small amounts of drugs found in milk products after they’re used to treat animals during rearing. The medicine is often used to treat mastitis, an inflammation of the mammary glands ( 10, 11).Īntibiotics, such as beta-lactams, may then be found in the final milk product - albeit in safe levels, according to the U.S. The use of antibiotics must be reported to the USDA, and the cow must be segregated and sold to a nonorganic farm ( 9).Ĭonventional dairy farms, on the other hand, use an array of antibiotics on cows. However, in emergencies - for example, if an animal’s life is in danger - a veterinarian may administer antibiotics. Department of Agriculture’s (USDA) guidelines for organic dairy livestock prohibit the general use of antibiotics ( 9).
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