Excretion of polybrominated biphenyls into the milk of cows.
Four cows each were fed 10 mg/day polybrominated biphenyl for 60 days. Concentration in milk fat reached a steady state at 3.07 ppm within 30 days. When feeding polybrominated biphenyl was stopped, the concentration declined 71% in the first 15 days. The decline was slower thereafter, with a half-life of 58 days. Effects on health and production of the cows were not adverse for as long as 1 yr after the compound was fed.
D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D001713:Biphenyl Compounds / Q000378:metabolism*; D001835:Body Weight / Q000187:drug effects; D002417:Cattle; D004785:Environmental Pollutants / Q000378:metabolism; D005260:Female; D006207:Half-Life; D006842:Hydrocarbons, Brominated / Q000378:metabolism; D007774:Lactation / Q000187:drug effects; D050356:Lipid Metabolism; D008892:Milk / Q000378:metabolism*; D011247:Pregnancy; D013997:Time Factors
D001713:Biphenyl Compounds; D004785:Environmental Pollutants; D006842:Hydrocarbons, Brominated