日粮锰水平对辽宁绒山羊母羊血液繁殖指标的影响  

Effects of dietary manganese levels on blood reproduction of Liaoning cashmere goats

作　　者：曹阳 

机构地区：[1]旅顺口区畜牧兽医服务中心,辽宁大连116041

出　　处：《饲料工业》2017年第3期18-22,共5页Feed Industry

基　　金：国家科技支撑计划"常年长绒型辽宁绒山羊新品系选育扩繁及产业化示范"[2009BADA5B02]

摘　　要：为筛选能够提高辽宁绒山羊母羊繁殖性能的最适日粮锰水平,研究选择体况良好,体质量相近(34.16±0.90)kg的2.5岁母羊60只,随机分为4组,各组基础饲粮一致,锰补饲量分别是0、20、40、60 mg/kg DM,测定母羊空怀期(发情配种前)、妊娠1个月(第30 d)和妊娠4个月(第120 d)血清激素指标。结果显示,空怀期,补饲20 mg/kg DM锰组的FSH含量显著高于其他3组(P<0.05)。空怀期,补饲锰组的LH含量显著高于基础饲粮组(P<0.05);妊娠4个月,补饲60 mg/kg DM锰组血清LH含量显著高于补饲20 mg/kg DM锰组和基础饲粮组(P<0.05)。空怀期,补饲20、60 mg/kg DM锰组血清PROG含量显著高于基础饲粮组(P<0.05),妊娠1个月,补饲20 mg/kg DM锰组血清PROG含量显著高于40 mg/kg DM锰组(P<0.05)。空怀期和妊娠4个月,补饲20 mg/kg DM锰组血清MT含量显著高于基础饲粮组(P<0.05),妊娠1个月,补饲锰组的血清MT含量显著高于基础饲粮组(P<0.05)。空怀期,补饲20 mg/kg DM锰组的血清PRL含量显著低于基础饲粮组(P<0.05);妊娠1个月,补饲锰组的血清PRL含量显著低于基础饲粮组(P<0.05)。空怀期和妊娠4个月,补饲40、60 mg/kg DM锰组血清E_2含量显著高于其余两组(P<0.05);妊娠1个月,补饲锰组的血清E2含量显著高于基础饲粮组(P<0.05)。结果说明,空怀期补饲锰20 mg/kg DM(日粮锰水平59.84 mg/kg DM),妊娠期补饲锰60 mg/kg DM(日粮锰水平99.84 mg/kg DM)对提高辽宁绒山羊母羊繁殖性能的效果较好。In order to select the optimum dietary manganese level in Liaoning cashmere goats, the body condition was good, the body weight was similar[（34.16±0.90） kg] of the ewe of the age of 60 years in this study, and evenly divided into four groups at random. The cashmeres in each group were respec- tively fed with basal diet and supplemented with manganese of 0, 20, 40, 60 mg/kgDM. Blood samples were taken to determine reproductive parameter during non-pregnant period（estrus before）, 1 month of pregnancy（the first 30 days） and 4 months of pregnancy（first 120 days）. The result showed that, the lev- el of FSH feeding 20 mg/kgDM manganese group was significantly higher than the other three groups（P〈 0.05） in non-pregnant period. The content of LH feeding manganese group was significantly higher than the basal diet group （P〈0.05）in non-pregnancy period;the levels of LH feeding 60 mg/kgDM manganese was significantly higher than feeding 20 mg/kgDM manganese group and the basal diet group（P〈0.05） in 4 months of pregnancy. The level of PROG feeding 20, 60 mg/kgDM manganese were significantly high- er than basal diet group（P〈0.05）in non-pregnant period, the level of PROG feeding 20 mg/kgDM manga- nese group was significantly higher than feeding 40 mg/kgDM manganese group（P〈0.05） in 1 month of pregnancy. The level of MT feeding 20 mg/kgDM manganese group was significantly higher than the basal diet group （P〈0.05） in non-pregnant pe- riod and in 4 months of pregnancy; the level of MT of manganese supplementation group was sig- nificantly lower than basal diet group in I month of pregnancy（P〈0.05）. The level of PRL feeding 20 mg/kgDM manganese group was significantly lower than the basal die! groups（P〈0.05） in non-pregnant period;the level of PRI, of manganese supplemen- tation group was significantly lower than hasal diet group in 1 month of pregnancy（P〈0.05）. The levels of E2 feeding 40, 60 mg/kgDM manganese were signifieantly higher than the other two groups

关 键 词：辽宁绒山羊母羊 繁殖指标 锰 

分 类 号：S816.32[农业科学—饲料科学]