Malestein A
Veevoeding Advies Bureau (V.A.B.), Voorthuizen.
Tijdschr Diergeneeskd. 1988 Aug 15;113(15-16):860-4.
The milk production per cow on a dairy farm did not increase to any appreciable extent during the past few years. Moreover, when a number of cattle were found not to be pregnant, this suggested mineral deficiency to the livestock owner. The diet of the animals was therefore examined at his request and some advice was offered on this basis. These recommendations resulted in an increase of the production per cow in a standard herd, averaging 3.2 units, during the following year. The production of milk fat and milk protein showed an average daily increase of 146 g per animal. Mineral deficiency as a causative factor was considered to be unlikely.
在过去几年里，奶牛场每头奶牛的产奶量并未显著增加。此外，当发现一些奶牛未怀孕时，这向牲畜主人表明可能存在矿物质缺乏的情况。因此，应他的要求对这些动物的饮食进行了检查，并在此基础上提供了一些建议。这些建议使得标准牛群中每头奶牛的产奶量在次年平均增加了3.2单位。乳脂和乳蛋白的产量显示每头动物平均每天增加146克。矿物质缺乏被认为不太可能是致病因素。
