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
出处
《山东农业大学学报（自然科学版）》
CSCD
北大核心
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)
关键词
生长牛
能量
需要量
代谢规律
Beef cattle
Energy
Requirement
Metabolism rules
