妊娠后期限饲对母羊分娩后血中GHI、GF-I、T_3、T_4和INS浓度的影响  

Effect of Undernutrition during Late Pregnancy on the Levels of GH,IGF-I,INS,T_3,T_4 Concentrations in Ewes

作　　者：齐景伟[1] 候先志[1] 高峰[1] 刘淑英[1] 

机构地区：[1]内蒙古农业大学动物科学与医学学院,呼和浩特010018

出　　处：《畜牧兽医学报》2007年第6期563-567,共5页ACTA VETERINARIA ET ZOOTECHNICA SINICA

基　　金：国家自然科学基金资助项目(30360074);博士点基金项目(20060129008)

摘　　要：选择经同期发情且同期受孕,妊娠90 d的健康蒙古绵羊100只,分为代谢能(ME)0.175 MJ/(kgw0.75.d)(RG1)0、.33 MJ/(kgw0.75.d)(RG2)以及自由采食对照组(CG)3个营养水平处理组,研究妊娠后期不同营养水平限制饲养对母羊分娩后生理补偿期内血中GH、IGF-I、T3、T4和INS浓度的影响。结果表明:母羊从分娩后10 d开始,各限制组RG1和RG2组GH浓度均处于较高水平,而IGF-I、INS、T3、T4浓度仍处于较低水平,与对照组相比差异不显著;分娩30 d后,各组各指标变化复杂,RG1和RG2组GH浓度均有所下降,而IGF-I、INS、T3、T4浓度缓慢回升,到150 d后,各限制组GHI、GF-II、NS、T3、T4浓度都与对照组水平持平,而且在整个生理补偿期内,RG2组表现更突出。100 Mongolia ewes, which were synchronized for oestrus and mated at the same day, were selected and divided into three groups that offered 0. 175 MJ/（kgw^0.75·d） （restricted groupl, RG1）, 0.33 MJ/（kgw^0.75·d） （restricted group2; RG2） and voluntary intake （control group, CG） during their late pregnancy （90 days） respectively. The concentrations of growth hormone（GH）, insulin-like growth factor（IGF-I）, insulin（INS）, T3, T4 were determined to study the effect of different undernutrition. The results indicated that the GH concentration of ewes in RG2 and RG1 were increased, whereas the IGF-I, T3 ,T4 and INS concentration of ewes were decreased, and the difference were not significant （P〉0.05） compared to CG with the nutrients supply increasing after parturition 10 days; The parameters of different groups changed differently after parturition 30 days, the concentrations of GH was decreasing and the concentrations of IGF-I, INS, T3, T4 were increasing slowly; After parturition 150 days, the concentrations of GH,IGF-I,INS,T3 ,T4 reached the levels of control group. And during the physiological compensatory, the RG2 group changed significantly.

关 键 词：营养限制 妊娠母羊 生理补偿 GH IGF-I T3 T4 INS 

分 类 号：S826.5[农业科学—畜牧学]