冯仰廉;李胜利;张晓明;

• 1:中国农业大学动物科技学院动物营养学国家重点实验室
• 2:中国农业大学动物科技学院动物营养学国家重点实验室
• 3:中国农业大学动物科技学院动物营养学国家重点实验室 北京100094
• 4:北京100094

摘要(Abstract)：

谷物饲料干物质中的淀粉含量多在50%以上,全株玉米青贮的淀粉含量亦有30%。牛的玉米日粮生淀粉消化率比熟淀粉低,但熟淀粉由于瘤胃消化率很高,所以瘤胃后的可消化淀粉量很低。生糖前体能量(瘤胃丙酸+肠可消化淀粉)能明显提高产奶量和乳蛋白率,但导致乳脂率下降。须对生糖前体能量进行评定和调节,以提高产奶效率。对真胃灌注不同梯度的葡萄糖或淀粉均显着地提高了Kf和体脂肪及体蛋白质沉织,因此我国肉牛饲养标准提出的Kf(%)=11.7645+55.756(IDOM/FNDF)仍适用,但可进一步增加IDOM中的淀粉调控。

关键词(KeyWords)： 奶牛;肉牛;葡萄糖;淀粉;营养调控;评定

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 冯仰廉;李胜利;张晓明;

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参考文献(References)：

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