摘要
21头安装瘤胃瘘管的荷斯坦产奶牛随机分为对照组和试验Ⅰ～Ⅵ组，每组3头，对照组饲喂全混日粮（TMR），试验Ⅰ～Ⅵ组每天饲喂TMR加50．0g、100．0g、150．0g、200．0g、250．0g、300．0g／头复合脂肪酸日粮，主要探讨复合脂肪酸对奶牛瘤胃甲烷（CH4）产量、挥发性脂肪酸（VFA）、氨氮（NH3-N）浓度和pH值及产奶性能的影响。结果，TMR中每天添加150．0～200．0g／头复合脂肪酸，明显（P〈0．05）提高奶牛乳脂率和瘤胃乙酸浓度，显著（P〈0．05）降低奶牛的CH4释放量、CH4能／GE值和瘤胃NH3-N浓度，对奶牛的标准乳（FCM）、乳干物质、乳蛋白和乳糖均有提高趋势，能有效地提高奶牛的经济效益和生态效益。
Twenty-one Holsteins fitted with ruminal cannulas were divided into seven groups at randomly which were fed on TMR （ control） and TMR added 50. 0, 100. 0, 150. 0, 200. 0, 250. 0 and 300. 0 g/h/d compound fatty acid, respectively （ Ⅰ - Ⅵ treatments）. The main objective of present study was to study the effects of compound fatty acid on rumen VFA, NH3-N concentration, CH4 production, pH and milk performance in Holstein cows. The results were as follows： TMR added 150. 0 -200. 0 g/h/d compound fatty acid additives enhanced the milk fat percentage and rumen acetate concentration of Holsteins （ P 〈 0. 05 ）, decreased the CH4 production, rumen NH3-N concentration and the ratio of CH4 energy and general energy （ P 〈 0. 05）, improved the Holsteins FCM, milk dry matter, protein and lactose, which enhanced the Holsteins economic and ecological benefit effectively.
出处
《畜牧与兽医》
北大核心
2008年第11期21-24,共4页
Animal Husbandry & Veterinary Medicine
基金
日本酪农学圆大学外籍人研究基金(jprk-2007016)
关键词
奶牛
瘤胃瘘管
复合脂肪酸
CH4
VFA
NH3-N
Holstein
ruminal cannula
compound fatty acid
methane
volatile fatty acid, NH3-Nitrogen
