能量水平对初产母牛围产期生产性能的影响

摘要

Their nutrition status directly act on the production performance and reproductive performance of dairy cows during perinatal period by calving and lactating, the study was conducted to investigate the effects of dietary energy levels on dry matter intake, body weight variation, milk yield, milk composition, body condition and the average days of the first service after delivery, in order to evaluate their feeding economic benefits,and to provide for reasonably diet formulation during this period, it is of theoretical and practical significance on topic seletion,using the results to provid the scientific feeding after calving in summer with important reference value.%围产期奶牛历经了产犊与泌乳,其营养状况直接影响乳牛的生产性能.本试验就日粮能量水平对奶牛围产期干物质采食量、体重变化、产奶量、乳成分、体况及产后首次配种时间的影响进行了研究分析,评价其经济效益,探讨初产母牛围产期和泌乳前期合理的日粮能量水平配制,以期为夏季产犊奶牛的科学饲养提供理论依据和数据参考.