日粮锰水平对辽宁绒山羊母羊血液繁殖指标的影响

发布时间：2018-08-29 12:25

【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(P0.05)。空怀期,补饲锰组的LH含量显著高于基础饲粮组(P0.05);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(P0.05)。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(P0.05),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(P0.05)。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(P0.05),妊娠1个月,补饲锰组的血清MT含量显著高于基础饲粮组(P0.05)。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(P0.05);妊娠1个月,补饲锰组的血清PRL含量显著低于基础饲粮组(P0.05)。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(P0.05);妊娠1个月,补饲锰组的血清E2含量显著高于基础饲粮组(P0.05)。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。
[Abstract]:In order to select the most suitable dietary manganese level to improve the reproductive performance of Liaoning cashmere goat ewe, 60 ewe (2.5 years old) with good body condition and similar body mass (34.16 卤0.90) kg were randomly divided into 4 groups with the same basal diet. Manganese supplementation was used to determine serum hormone levels in estrous estrus, 1 month (30 d) and 4 months (120 d) of estrous estrus in estrous estrus of estrous estrus for 60 mg/kg DM,. The results showed that the content of FSH in 20 mg/kg DM supplementation group was significantly higher than that in the other three groups (P0.05). In empty pregnant period, the LH content of supplemental manganese group was significantly higher than that of basal diet group (P0.05), and the serum LH content of supplemental 60 mg/kg DM manganese group was significantly higher than that of 20 mg/kg DM manganese group and basal diet group (P0.05). In the empty pregnant period, the serum PROG level in the 20 ~ 60 mg/kg DM group was significantly higher than that in the basal diet group (P0.05), and the serum PROG level in the 20 mg/kg DM group was significantly higher than that in the 40 mg/kg DM group (P0.05). During empty pregnancy and 4 months of gestation, the content of serum MT in supplemental 20 mg/kg DM mn group was significantly higher than that in basal diet group (P0.05), and at 1 month of pregnancy, the serum MT content in supplemental manganese group was significantly higher than that in basal diet group (P0.05). In the empty pregnant period, the serum PRL content in the 20 mg/kg DM group was significantly lower than that in the basal diet group (P0.05), and the serum PRL content in the supplemental manganese group was significantly lower than that in the basal diet group (P0.05) at the first month of pregnancy. The serum E _ 2 content in 40 ~ 60 mg/kg DM group was significantly higher than that in the other two groups during empty pregnancy and 4 months of gestation (P0.05), and the serum E _ 2 content in the first month of pregnancy group was significantly higher than that in the basal diet group (P0.05). The results showed that supplemental feeding of manganese for 20 mg/kg DM (59.84 mg/kg DM),) during pregnancy (99.84 mg/kg DM) could improve the reproductive performance of Liaoning cashmere goat ewe.
【作者单位】：旅顺口区畜牧兽医服务中心;
【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]
【分类号】：S827.5

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