舍饲绵羊生长阶段绝食代谢研究  

Study on The Fasting Metabolism of House-feeding Sheep in Growing Stage

作　　者：王莹[1] 魏炳栋[2] 邱玉朗[2] 万伶俐[2] 

机构地区：[1]陕西师范大学生命科学院,陕西西安710062 [2]吉林省农业科学院,吉林长春130033

出　　处：《畜牧与饲料科学》2009年第4期46-47,共2页Animal Husbandry and Feed Science

基　　金：吉林省科技发展重点项目"舍饲肉羊能量与蛋白质代谢特点研究"(20041112)

摘　　要：选择舍饲东北细毛羊生长期公羊6只,按体重分为2组,第1组:(26.9±3.39)kg,第2组:(34.85±0.35)kg,应用开放式呼吸测热装置进行了绝食72～96h气体呼吸测热试验及消化代谢试验研究。结果表明:第1组和第2组的耗氧量为(8.89±0.59)和(9.53±3.44)L/W0.75·d;CO2生成量为(7.44±0.45)和(6.7±1.10)L/W0.75·d;绝食期间呼吸商为0.71,0.67;粪氮排泄量为(0.17±0.06)和(0.14±0.08)g/W0.75·d;尿氮排泄量为(0.42±0.11)和(0.24±0.11)g/W0.75·d。Six house-feeding male northeast fine wool sheep in growing stage were selected and divided into 2 groups according to their bodyweights. The bodyweights of Group 1 were （26.9±3.39） kg and that of Group 2 were （34.85±0.35） kg. The gas respiratory calorimetry experiment and digestive metabolism experiment were performed on the sheep fasting for 72-96 h by applying respiratory calorimetry equipment with open circuit. The results indicated that the oxygen consumption quantities of Group 1 and 2 were （8.89 ±0.59） and （9.53±3.44） L/（W^0.75.d）, their creation quantities of CO2 were （7.44±0.45） and （6.7±1.10） L/（W^0.75.d）, their respiratory quotients in fasting period were 0.71 and 0.67, their fecal nitrogen excretion amounts were （0.17±0.06） and （0.14±0.08） g/（W^0.75.d） and their urine nitrogen excretion amounts were （0.42 ±0.11 ） and （0.24±0.11 ） g/（W^0.75.d）.

关 键 词：舍饲绵羊 生长期 绝食代谢 开放式呼吸测热系统 

分 类 号：S826.1[农业科学—畜牧学]