稻草补饲苜蓿对山羊瘤胃内蛋白微循环效率与增重的组合效应  

Study on Associative Effects of Diet Rice Straw Supplemented with Alfalfa Hay on Rumen Protein Microcirculation Efficiency and Daily Body Weight Gain of Goats

作　　者：张吉鹍[1,2] 张震宇[3] 吴文旋[4] 李龙瑞 邹庆华[1,2] 

机构地区：[1]江西省农业科学院畜牧兽医研究所,江西南昌330200 [2]江西新天地药业有限公司兽药研究院,江西峡江331400 [3]内蒙古农业大学动物科学学院,内蒙古呼和浩特010018 [4]贵州大学动物科学学院,贵州贵阳550025

出　　处：《江西农业学报》2014年第8期71-74,共4页Acta Agriculturae Jiangxi

基　　金：国家自然科学基金项目(31060313);贵州省农业科技攻关项目[黔科合NY字(2009)3085]

摘　　要：在稻草基础日粮中分别补饲25%(处理MSL25)、50%(处理MSL50)与75%(处理MSL75)的苜蓿,研究了不同补饲处理对山羊瘤胃内蛋白微循环效率与增重的组合效应。结果表明:瘤胃原虫对细菌的吞噬量与吞噬速率总体上均随苜蓿补饲水平的增加而下降,但处理MSL50与MSL75间差异不显著;各处理的瘤胃原虫对细菌的吞噬量与吞噬速率均在吞噬时间60 min时达到最高值;不同处理的日增重和总增重均表现为:MSL25<MSL50<MSL75;在3个处理中,处理MSL50的单位增重所需的饲料量较少,且单位增重所需的饲料成本最低。因此,在稻草基础日粮中补饲50%的苜蓿可提高山羊瘤胃内蛋白微循环效率,改善增重性能,降低饲料成本。The tested goats were fed with basic diet rice straw supplemented with 25%（ treatment MSL25）,50%（ treatment MSL50）and 75%（treatment MSL75）of alfalfa hay（Medicago sativa L. ,MSL）respectively,and the associative effects of differ-ent diet treatments on the rumen protein microcirculation efficiency and daily body weight gain of goats were studied. The results showed that both the phagocytosing quantity and the phagocytosing rate of rumen protozoa on bacteria generally decreased with the in-crease in supplementary level of MSL,but they were not significantly different between treatment MSL50 and treatment MSL75. In all treatments,the phagocytosing quantity and phagocytosing rate of rumen protozoa on bacteria reached a peak at 60 min. The daily body weight gain and total body weight gain of goats in different treatments all revealed the following order：MSL25 ﹤MSL50 ﹤MSL75. Among three treatments,the required feed amount per unit gain of goats in treatment MSL50 was the least,and the feed cost per unit gain was the lowest. Therefore,it was concluded that supplementing the basic diet rice straw with 50% of MSL could increase the rumen protein microcirculation efficiency of goats,improve their body weight gain performance,and reduce feed cost.

关 键 词：山羊 稻草 补饲苜蓿 瘤胃原虫 吞噬率 增重性能 

分 类 号：S827.5[农业科学—畜牧学]