Knoblauch H, Körber R
Arch Exp Veterinarmed. 1978;32(5):737-49.
Hygiene checks were applied to 97 young bulls of dairy breeds and 300 of beef breeds on a bull raising centre, between 1972 and 1975. Their normal blood serum levels of organic phosphorus, calcium, and magnesium were compared to the levels of the same minerals in feed rations. Blood serum values were compared also between animals with pathological changes in the supporting, locomotor, and genital systems as well as in sperma and pellet, on the one hand, and those without such changes, on the other. Also compared were sons of different fathers of the beef breed, with the view of elucidating certain peculiarities specific of blood lines.
1972年至1975年间，在一个种公牛饲养中心，对97头奶牛品种的青年公牛和300头肉牛品种的青年公牛进行了卫生检查。将它们血清中有机磷、钙和镁的正常水平与日粮中相同矿物质的水平进行了比较。一方面，将支持系统、运动系统、生殖系统以及精液和睾丸有病理变化的动物的血清值，与另一方面没有此类变化的动物的血清值进行了比较。还比较了肉牛品种不同父亲的后代，以阐明某些特定血统的特性。
