Aliev A A
Fiziol Zh SSSR Im I M Sechenova. 1982 Apr;68(4):522-7.
Feeding of cows with hay-concentrate ration in the form of granules less than 0.8 cm in size suppresses fat production in mammal glands. The process of making granules decreases the amount of choline in the food. Irrespective of the choline amount in ration its contents in the paunch is constant. During evacuation from the stomach into intestine two thirds of the paunch choline is destroyed. Feeding of the cows with granulated food alone decreases synthesis and excretion of choline whereas acetate-mineral additions restore its level as well as the amount of fat in milk of the cows.
用粒径小于0.8厘米的颗粒状干草-精料日粮喂养奶牛会抑制乳腺脂肪生成。制粒过程会减少食物中的胆碱含量。无论日粮中胆碱含量如何,其在瘤胃中的含量是恒定的。从胃排空进入肠道的过程中,瘤胃中三分之二的胆碱会被破坏。仅用颗粒饲料喂养奶牛会减少胆碱的合成和排泄,而添加乙酸盐-矿物质可恢复其水平以及奶牛牛奶中的脂肪含量。