| 日粮不同蛋白水平对生长牛营养物质消化率的影响 |
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| 引用本文： | 周汉林,莫放,李琼,黄鸿威,徐萍. 日粮不同蛋白水平对生长牛营养物质消化率的影响[J]. 河北农业大学学报, 2006, 29(1): 82-86 |
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| 作者姓名： | 周汉林 莫放 李琼 黄鸿威 徐萍 |
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| 作者单位： | 中国热带农业科学院,品资所,海南,儋州,571737;中国农业大学,动物科学院,北京,100094;中国农业大学,动物科学院,北京,100094;中国热带农业科学院,品资所,海南,儋州,571737 |
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| 摘 要： | 试验动物为3头10月龄左右的中国荷斯坦生长公牛,设计前后自身对照试验,整个试验分三期进行,每期3头牛饲喂一个粗蛋白质水平,分别为10.12%、12.19%、14.29%。结果表明:日粮蛋白质水平为10.12%、12.19%、14.29%时,对中国荷斯坦生长公牛的NDF(中性洗涤纤维)和ADF(酸性洗涤纤维)的表观消化率无明显的影响(P>0.05),而对淀粉的表观消化率则有显著的影响(P<0.05),淀粉的表观消化率随着其日粮中的粗蛋白质水平的升高而增加;日粮蛋白水平对于日粮中氮的表观消化率和沉积效率有显著的影响(P<0.05),随着粗蛋白质水平的升高而增加。
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| 关 键 词： | 生长牛 蛋白质 表观消化率 |
| 文章编号： | 1000-1573（2006）01-0082-05 |
| 收稿时间： | 2005-06-15 |
| 修稿时间： | 2005-06-15 |
Effects of different dietary crude protein level on nutrition digestibility of growing calves |
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| ZHOU Han-lin,MO Fang,LI Qiong,HUANG Hong-wei,XU Ping. Effects of different dietary crude protein level on nutrition digestibility of growing calves[J]. Journal of Agricultural University of Hebei, 2006, 29(1): 82-86 |
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| Authors: | ZHOU Han-lin MO Fang LI Qiong HUANG Hong-wei XU Ping |
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| Affiliation: | 1. Tropical Crop Genetic Resource Research Institute of Chinese Academy of Tropical Agriculture Science, Danzhou 571737, China; 2. College of Animal Science and Technology, China Agricultural University, Beijing 100094, China |
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| Abstract: | Three 10 months growing Chinese Hostein calves were used in a self-control design experiment,which was conducted three periods.Calves were fed with a dietary crude protein level 10.12%、12.19% and 14.29% respectively.The results indicated that: The effects of dietary crude protein level on NDF and ADF apparent digestibility of growing calves were not significant(P>0.05),starch apparent digestibility increased gradually with dietary Crude Protein level increasing(P<0.05).N apparent digestibility and N retention rate increased significantly with dietary crude protein level increasing(P<0.05). |
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| Keywords: | growing calves protein apparent digestibility |
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