畜牧与饲料科学 ›› 2023, Vol. 44 ›› Issue (1): 76-79.doi: 10.12160/j.issn.1672-5190.2023.01.012

• 动物营养与饲料科学 • 上一篇    下一篇

FecB基因对杜寒杂交母羊产羔性能及后代生产性能的影响研究

陈秋菊1,王韵斐1,朝鲁孟1,张娟1,斯庆高娃1,王海平2,刘芳3,付绍印4   

  1. 1.巴彦淖尔市农牧业科学研究所,内蒙古 巴彦淖尔 015000
    2.巴彦淖尔市畜牧业服务中心,内蒙古 巴彦淖尔 015000
    3.河套学院,内蒙古 巴彦淖尔 015000
    4.内蒙古自治区农牧业科学院,内蒙古 呼和浩特 010031
  • 收稿日期:2022-12-07 出版日期:2023-01-30 发布日期:2023-02-14
  • 通讯作者: 付绍印(1985—),男,副研究员,博士,主要从事分子遗传与动物遗传育种研究工作。
  • 作者简介:陈秋菊(1985—),女,助理研究员,硕士,主要从事动物营养和遗传育种方面的研究工作。
  • 基金资助:
    “科技兴蒙”专项“优质肉羊高频高繁生产关键技术研究与产业化示范”;国家肉羊产业技术体系(CARS-38);“科技兴蒙”行动重点专项“巴彦淖尔国家农业高新技术产业示范区重点项目”(NMKJXM202110);内蒙古自治区关键技术攻关计划项目(2021GG0443)

Effects of FecB Gene on Lambing Performance of Dorper Sheep and Small Tail Han Sheep Crossbred Ewes and Production Performance of Their Offsprings

CHEN Qiu-ju1,WANG Yun-fei1,Chaolumeng 1,ZHANG Juan1,Siqinggaowa 1,WANG Hai-ping2,LIU Fang3,FU Shao-yin4   

  1. 1. Bayannur Institute of Agricultural and Animal Husbandry Sciences,Bayannur 015000,China
    2. Bayannur Municipal Animal Husbandry Service Center,Bayannur 015000,China
    3. Hetao College,Bayannur 015000,China
    4. Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,Hohhot 010031,China
  • Received:2022-12-07 Online:2023-01-30 Published:2023-02-14

摘要:

[目的] 探究FecB基因对杜寒杂交母羊产羔性能及后代生产性能的影响。[方法] 以杜泊羊(♂)和小尾寒羊(♀)杂交羊横交固定母羊群体为研究对象,检测不同横交固定代次母羊的FecB基因,测定并比较不同FecB基因型母羊的产羔性能及后代生产性能指标。[结果] 在杜寒横交固定一代、二代、三代、四代群体中均检测出BB型、B+型、++型3种基因型,横交固定代数越高,群体中纯合型BB基因型频率越高。杜寒横交固定一代、二代、三代BB型母羊的平均产羔数显著(P<0.05)高于相应横交固定代次的B+型母羊,并且随着群体中BB基因型频率的增加,母羊平均产羔数呈升高趋势。杜寒横交固定一代、二代母羊的平均产羔率低于小尾寒羊母羊,而杜寒横交固定三代母羊的平均产羔率高于小尾寒羊母羊以及杜寒横交固定一代、二代母羊。后代初生生产性能方面,BB型杜寒横交固定三代母羊后代的初生重显著(P<0.05)低于B+型杜寒横交固定三代母羊后代,二者的初生体高、体长、胸围差异不显著(P>0.05);后代断奶生产性能方面,BB型杜寒横交固定三代母羊后代的断奶重、体长、胸围与B+型杜寒横交固定三代母羊后代差异不显著(P>0.05),体高显著(P<0.05)低于B+型杜寒横交固定三代母羊后代。[结论] FecB基因对杜寒杂交母羊产羔性能影响显著,在多羔母羊选择中具有很大的应用价值。

关键词: FecB基因, 杜寒横交后代, 产羔性能, 生产性能

Abstract:

[Objective] The present study was conducted to assess the effects of FecB gene on lambing performance of Dorper sheep and Small Tail Han sheep crossbred ewes and production performance of their offsprings. [Method] The athwart cross fixed ewes produced by the crossbred sheep of Dorper rams and Small Tail Han ewes were used as the research objects. The FecB genotypes of different generations of the athwart cross fixed ewes were detected, and the lambing performance of those of varied FecB genotypes as well as the production performance of their offsprings were statistically compared. [Result] The genotypes of BB, B+ and ++ were observed in the F1, F2, F3 and F4 generations of the athwart cross fixed ewes, and the homozygous BB genotype frequency was elevated as the increase of generations of athwart cross fixation. The F1, F2 and F3 generations of the athwart cross fixed ewes of BB genotype had significantly (P<0.05) higher average litter size than their counterparts of B+ genotype, and the average litter size showed an upward trend as the increase of the BB genotype frequency. The average lambing rate of the F1 and F2 generations of the athwart cross fixed ewes was lower in comparison to that of the Small Tail Han ewes, while the F3 generation of the athwart cross fixed ewes had higher average lambing rate than the Small Tail Han ewes as well as the F1 and F2 generations of the athwart cross fixed ewes. In terms of the production performance of the neonatal offsprings, the birth weight of the offsprings produced by the F3 generation of the athwart cross fixed ewes of BB genotype was significantly (P<0.05) lower than that of the offsprings produced by their counterparts of B+ genotype, and no significant (P>0.05) differences in body height, body length and chest circumference were observed between them. In terms of the production performance of the weaned offsprings, the body weight, body length and chest circumference of the offsprings produced by the F3 generation of the athwart cross fixed ewes of BB genotype were not significantly (P>0.05) different from those of the offsprings produced by their counterparts of B+ genotype, while the former had significantly (P<0.05) lower body height than the later. [Conclusion] FecB gene significantly and favorably affects the lambing performance of the crossbred ewes of Dorper sheep and Small Tail Han sheep, and it has great application value in selection of polytocous ewes.

Key words: FecB gene, athwart cross fixed offsprings of Dorper sheep and Small Tail Han sheep, lambing performance, production performance

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