奶牛产奶前期营养调控研究

Cow Milked the Nutrition Study

通过对奶牛日粮代谢能、粗蛋白质和粗饲料类型3个营养因素对产奶前期奶牛100d产奶量影响的测定,确定日粮代谢能是起主导作用的因素。本试验ME:11.0MJ/kg,CP:12.0,粗饲料为全株玉米青贮饲料加玉米秸,奶牛100d产奶量可达到2907kg,平均日产奶29.07kg/d,全日粮料奶比为0.69:1,相当于精饲料产奶比0.31:1。根据上述试验结果和吉林西部的气候与饲料资源特点,笔者推荐在奶牛产奶前期生产中使用ME:10.0MJ/kg,CP:10.5的日粮,尽量不使用稻草作为奶牛产奶前期的主要粗饲料。

Based on the bread, crude protein metabolism and coarse fodder for three types of nutrition in the milk cow 100 days, determine the production influence diet is metabolic can play a leading role. This test ME： 11.0 MJ/kg, CP： coarse fodder for the individual, plant corn silage YuMiJie, cows and milk products can reach 100 days 2907kg, average per kg/d 29.07 milk, bread for full-time than milk mixture 0.69： I, JingSiLiao equivalent to produce milk than 0.31：1. According to the test results and the climate in west jilin and feed resources characteristics, writer recommend early in the cow milked used in production ME： 10.0 MJ/kg, CP： 10.5%, food, do not use straw as cow milked the main coarse fodder.