| 过瘤胃保护脂肪对肉牛增重和营养物质表观消化率的影响 |
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| 引用本文： | 张微,邢壮,莫放,张晓明,丁国军.过瘤胃保护脂肪对肉牛增重和营养物质表观消化率的影响[J].中国畜牧杂志,2009,45(7). |
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| 作者姓名： | 张微 邢壮 莫放 张晓明 丁国军 |
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| 作者单位： | 1. 中国农业大学动物营养学国家重点实验室,北京,100193
2. 顺义兴盛养殖场,北京,100859 |
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| 基金项目： | 农业公益性行业科研专项基金，国家科技支撑计划 |
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| 摘 要： | 为研究过瘤胃脂肪对肥育肉牛增重和营养物质消化的影响,将87头西杂肉牛分成2组,试验组在对照组的日粮基础上补饲300g过瘤胃脂肪,结果表明:日粮中添加过瘤胃脂肪可显著提高肉牛日增重和饲料转化效率(P<0.05),试验组和对照组的日增重分别为1255g和1113g。过瘤胃脂肪添加对全消化道干物质(DM)、有机物(OM)、中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)消化率影响不显著(P>0.05),试验组全消化道粗脂肪的表观消化率显著高于对照组(P<0.05),但试验组日粮粗蛋白质消化率显著低于对照组(P<0.05)。
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| 关 键 词： | 过瘤胃脂肪 日增重 消化率 肉牛 |
Effect of Supplemental Rumen-protected Fat on Performance and Nutrient Digestibility in Beef Cattle |
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| ZHANG Wei,XING Zhuang,MO Fang,ZHANG Xiao-ming,DING Guo-jun.Effect of Supplemental Rumen-protected Fat on Performance and Nutrient Digestibility in Beef Cattle[J].Chinese Journal of Animal Science,2009,45(7). |
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| Authors: | ZHANG Wei XING Zhuang MO Fang ZHANG Xiao-ming DING Guo-jun |
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| Abstract: | A rumen protected fat product composed of hydrogenated palm oil fatty acids(HPF) was evaluated in beef cattle diets.The objectives of this research were to determine the effects of increasing HPF in diets on performance of steers and on nutrients digestibility.Eighty-seven crossbred(Simmental ×Chinese yellow cattle) beef with 2.0～2.5 year-old were stratified by weight and randomly assigned to two dietary treatments that contained HPF(treatment) and no HPF(control).The results indicated that treatments affect(P > 0.05) ADG of beef.The feed/gain were improved(P > 0.05) for adding the HPF;The total tract apparent digestibility of crude protein was lower when the beef were fed HPF, and the apparent digestibility of ether extract was higher(P < 0.05) in treatment group than that control group.Collectively, HPF may improve beef cattle performance and ether extract digestion. |
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| Keywords: | rumen protected fat ADG digestibility beef |
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