Mercer H D, Teske R H, Condon R J, Furr A, Meerdink G, Buck W, Fries G
J Toxicol Environ Health. 1976 Nov;2(2):335-49. doi: 10.1080/15287397609529437.
The health status of 16 herds of dairly cattle exposed to low levels of polybrominated bipenyl (PBB) was compared with that of 15 control herds. Milk production of the contaminated herds was not significantly changed in 1972, 1973, and 1974 and was not significantly different from that of control herds in the same years. Mortality of adult cows and calves, the percentages of cows culled from the herds because of old age and low production, disease, or sterility, and the general health conditions were similar in the two groups. Serum concentrations of calcium, glucose, and cholesterol in contaminated herds were significantly different from those of the control herds, but the relationship to PBB exposure needs further investigation.
将16群暴露于低水平多溴联苯（PBB）的奶牛的健康状况与15个对照牛群的健康状况进行了比较。受污染牛群的产奶量在1972年、1973年和1974年没有显著变化，并且与同年对照牛群的产奶量没有显著差异。两组中成年母牛和犊牛的死亡率、因年老、低产、疾病或不育而从牛群中淘汰的母牛百分比以及总体健康状况相似。受污染牛群中钙、葡萄糖和胆固醇的血清浓度与对照牛群有显著差异，但与PBB暴露的关系需要进一步研究。
