不同养分进食水平及日粮降解蛋白质与代谢能比对妊娠后期细毛羊生产性能的影响

STUDY ON THE INFLUENCE OF NUTRIENT INTAKE AND RDP/ME RATIO ON PERFORMANCE OF FINE WOOL SHEEP DURING LAST 100-150 DAYS OF PREGNANCY

用87只2～3岁的河北细毛羊母羊,对日粮不同代谢能(ME)、降解蛋白(RDP)和非降解蛋白(UDP)水平对妊娠后期母羊体重及羔羊初生重影响进行了研究。试验结果表明,河北细毛羊妊娠后期(100～150天)能量和蛋白质的适宜供给量分别是0.79MJME/kgW^(0.75)/d、7.02gRDP/kgW^(0.75)/d和2.32gUDP/kgW^(0.75)/d。这一营养水平可保证母羊体重适度增加。同时还发现母羊日粮能量及蛋白质水平对羔羊初生重无显著影响。

A feeding trial was conducted with 87 ewes of 2~3 years old to study the influence of nutrient intake and RDP / ME ratio on performance of fine wool sheep during last pregnancy.The results of this experiment indicated that the ME,RDP and UDP requirement of the ewe for the last 50 days of pregnancy were 0.79MJ /kg W0.75/d,7.02g/kg W0.75/ d and 2.32g / kg W0.75/d.respectivly.It was also found that the content of ME,RDP and UDP in diet fed to ewe during last 100-150 days of pregnancy had no significant influence on birth weight of lambs.