动物营养学报 >

2014 , Vol. 26 >Issue 7: 1830 - 1837

DOI: https://doi.org/10.3969/j.issn.1006-267x.2014.07.015

反刍动物营养 Ruminant Nutrition

不同蛋白质源饲粮对肉牛能氮代谢和甲烷排放的影响

  • 张晓明 ,
  • 王之盛 ,
  • 唐春梅 ,
  • 陈慧 ,
  • 陈艳 ,
  • 邹华围 ,
  • 彭全辉
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  • 四川农业大学动物营养研究所, 雅安 625014

收稿日期: 2014-02-13

  网络出版日期: 2014-07-01

基金资助

农业部公益性行业专项饲料营养价值与畜禽饲养标准研究与应用（20090300608）；青藏高原社区畜牧业行业科技项目（201203008）

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Effects of Different Dietary Protein Sources on Energy and Nitrogen Metabolism and Methane Emission of Beef Cattle

  • ZHANG Xiaoming ,
  • WANG Zhisheng ,
  • TANG Chunmei ,
  • CHEN Hui ,
  • CHEN Yan ,
  • ZOU Huawei ,
  • PENG Quanhui
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  • Animal Nutrition Institute, Sichuan Agricultural University, Ya'an 625014, China

Received date: 2014-02-13

  Online published: 2014-07-01

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摘要

本试验旨在研究不同蛋白质源饲粮对肉牛能氮代谢和甲烷排放的影响。试验选用3头健康状况良好，体重接近并装有永久性瘤胃瘘管的宣汉黄牛，采用3×3完全拉丁方设计。试验饲粮分别以豆粕、菜籽粕、棉籽粕为蛋白质源进行配制；试验分3期，每期20 d，其中预试期10 d，消化试验3 d，呼吸代谢试验7 d。结果表明：1）各试验组的总挥发性脂肪酸浓度差异不显著（P>0.05），豆粕组和菜籽粕组的乙酸浓度显著高于棉籽粕组（P菜籽粕组>棉籽粕组；各组氨态氮含量差异显著（P棉籽粕组>菜籽粕组。2）豆粕组、棉籽粕组、菜籽粕组的采食氮、粪氮、可消化氮以及氮消化率差异都不显著（P>0.05）；尿氮则是豆粕组和棉籽粕组显著高于菜籽粕组（P棉籽粕组>菜籽粕组，豆粕组的增重净能、增重净能/总能、增重净能/消化能和增重净能/代谢能均显著低于菜籽粕组和棉籽粕组（P菜籽粕组>棉籽粕组。综上所述，以菜籽粕为蛋白质源的饲粮氮生物学效价最高，豆粕次之，棉籽粕最低；以棉籽粕为蛋白质源的饲粮增重净能最高，菜籽粕次之，豆粕最低；以豆粕为蛋白质源的饲粮的甲烷排放量最高，菜籽粕次之，棉籽粕最低。

关键词： 不同蛋白质源饲粮; 肉牛; 能量; 氮; 甲烷排放

本文引用格式

张晓明 , 王之盛 , 唐春梅 , 陈慧 , 陈艳 , 邹华围 , 彭全辉 . 不同蛋白质源饲粮对肉牛能氮代谢和甲烷排放的影响[J]. 动物营养学报, 2014 , 26(7) : 1830 -1837 . DOI: 10.3969/j.issn.1006-267x.2014.07.015

Abstract

This study was conducted to study the effects of different dietary protein sources on energy and nitrogen metabolism and methane emission of beef cattle. Three healthy Xuanhan Yellow cattle with similar body weight fitted with permanent ruminal cannulas were used in a 3×3 complete Latin square design. Soybean meal, rapeseed meal and cottonseed meal were used as protein sources to prepare experimental diets; the experiment was consisted of 3 periods with 20 days in each period (pre-experimental period: 10 days; digestion experiment: 3 days; breath metabolism experiment: 7 days). The results showed as follows: 1) total volatile fatty acid concentration in experimental groups was not significantly different (P>0.05); acetate concentration in soybean meal and rapeseed meal groups was significantly higher than that in cottonseed meal group (Prapeseed meal group>cottonseed meal group; NH3-N content in three groups was significantly different (Prapeseed meal group > cottonseed meal group. 2) Nitrogen intake, fecal nitrogen, digestible nitrogen and nitrogen digestibility in three groups were not significant different (P>0.05); urinary nitrogen in soybean meal and cottonseed meal groups was significantly higher than that in rapeseed meal group (Pcottonseed group meal>rapeseed meal group; net energy for gain (NEg), NEg/gross energy, NEg/digestive energy and NEg/metabolizable energy in soybean meal group were significantly lower than those in rapeseed meal and cottonseed meal groups (Prapeseed meal group>cottonseed group meal. It is concluded that nitrogen biological value of the diet with rapeseed meal as the protein source is the highest, that with soybean meal is lower, and that with cottonseed meal is the lowest; NEg of the diet with cottonseed meal as the protein source is the highest, that with rapeseed meal is lower, and that with soybean meal is the lowest; methane emission of the diet with soybean meal as protein source is the highest, that with rapeseed meal is lower, and that with cottonseed meal is the lowest.

Key words： different dietary protein sources; beef cattle; energy; nitrogen; methane emissions

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