Eckerlin R H, Maylin G A, Krook L
Cornell Vet. 1986 Oct;76(4):403-14.
A commercial feed concentrate and a mineral mix with excessive amounts of fluoride were introduced into a Holstein dairy herd with an average milk production well above national standards. Milk production decreased drastically, and during the following 6 years the deficit in milk production in the herd ranging from 52 to 120 milking cows was 1.5 million Kg (3 1/4 million lbs.). The tolerance levels set by the National Academy of Sciences for fluoride ingestion by lactating cow were found to be inadequate.
一种含有过量氟化物的商业饲料浓缩物和矿物质混合物被引入到一个平均产奶量远高于国家标准的荷斯坦奶牛群中。产奶量急剧下降，在接下来的6年里，该牛群中52至120头奶牛的产奶量赤字为150万千克（325万磅）。结果发现，美国国家科学院为泌乳奶牛设定的氟化物摄入量耐受水平并不够。
