7～10月龄杂交肉牛能量需要量及其代谢规律的研究  

STUDY ON ENERGY REQUIREMENTS AND METABOLISM RULES OF 7-10 MONTH AGES GROWING BEEF CATTLE

作　　者：穆阿丽[1] 杨在宾[1] 吴乃科[2] 宋恩亮[2] 杨维仁[1] 

机构地区：[1]山东农业大学动物科技学院,山东泰安271018 [2]山东农科院畜牧所,山东济南250000

出　　处：《山东农业大学学报（自然科学版）》2007年第4期519-523,共5页Journal of Shandong Agricultural University：Natural Science Edition

基　　金：山东省科技发展计划项目资助(№.022020103;№.031020101)

摘　　要：本试验选择18头健康、体重183.58±7.89 kg的6月龄利木赞×鲁西黄牛杂交生长牛,采用饲养试验、消化代谢试验和比较屠宰试验,研究了7-10月龄生长牛的能量需要量及其代谢规律。试验结果表明,本试验日粮的能量对对7-10月龄生长牛能量的平均消化率（DE/GE）为64.12%,总能代谢率（ME/GE）和消化能代谢率（ME/DE）分别为54.20%和84.53%。生长牛在7-10月龄时的维持的净能需要为359.39 KJ/KgW0.75.d,增重的净能需要为16940 KJ/kg。试牛的消化能、代谢能和净能总需要量的计算为：DER=616.18W0.75＋33810△W;MER=520.87W0.75＋28580△W;NER=359.39W0.75＋16940△W。式中：DER,MER,NER：KJ/d.头;W0.75：代谢体重,kg;△W：日增重。Feeding trial,digestion-metabolism and comparative slaughtering experiment were conducted to study the energy requirement and metabolism rules of the beef cattle There were 18 cross-bred（Luxi×Limousin） beef cattle.The experiment showed the following results ：The energy average digestible rate of the diet by the beef cattle was 64.12%,the gross energy metabolic rate（ME/GE）was 54.20%,the digestible energy metabolic rate（ME/DE）was 84.53%.The net energy requirement for maintenance was 359.39KJ/KgW^0.75·d,and the net energy requirement for gain was16940KJ/kg.The requirement for DER,MER and NER of the beef cattle can be calculated according to the following formula：DER=616.18W^0.75＋33810△W;MER=520.87W0.75＋28580△W;NER=359.39W^0.75＋16940△W.DER,MER,NER：KJ/d·头;W^0.75：metabolizable weight,Kg,△W：daily gain,kg/d

关 键 词：生长牛 能量 需要量 代谢规律 

分 类 号：S823[农业科学—畜牧学]