埃塞俄比亚南部加莫区Arba Minch Zuria区的绵羊育种实践和繁殖性能

Esatu Bekele, Y. Kechero, Chencha Chebo
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摘要

本研究对Arba Minch Zuria地区绵羊基因型的育种方法和繁殖性能进行了研究。选择该研究区是考虑到该地区羊的生产潜力和多种羊种的存在。它被划分为三个不同的农业生态;高地(HL),中部(ML)和低地(LL)。在调查数据收集方面,采用概率比例抽样技术共选取138户。他们接受了结构化面试问题的采访。还与12名成员进行了焦点小组讨论,他们对研究地区的羊生产和相关干预事件有足够的了解。数据分析使用社会科学统计软件包(SPSS)版本20。分类资料的统计差异采用交叉表法进行检验,P < 0.05为显著差异。各农业生态区养羊的总体目的分别为收入来源、储蓄目的、肉品生产目的、风险分担目的和粪肥生产目的,排名第1 ~ 5位。育种系统普遍不受控制,没有有计划地选择种畜。公羊和母羊被赶在一起。体型、毛色、毛长和肥硕的尾型(bonga和Doyogena)是选择繁殖公羊时最常报道的性状;而体型、颜色、尾粗和孪生率则是未来选择育种母羊时应重视的性状。初产总龄为12.81±0.14个月,产羔间隔为7.52±。08月龄,产仔数1.50±。每只羊有08只羊羔(P < 0.05)。产羔高峰期由4月延长至5月。根据目前的繁殖性能,本研究的绵羊品种可归类为中等水平的生产力。因此;考虑到绵羊生产对生产者的巨大而有价值的贡献,除了该调查信息外,强烈建议进一步进行基于验证性记录的研究,以确定和选择具有重要经济性状的优质动物。此外,应尽量减少研究群落的无控制繁殖行为。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Sheep Breeding Practices and Reproductive Performances in Arba Minch Zuria District, Gamo Zone, Southern Ethiopia
The study was carried to characterize breeding practices and reproductive performances of sheep genotypeskept in Arba Minch Zuria District. This study area was selected for its potential of sheep production andexistence of various sheep types. It was stratified into three distinctive agro-ecologies; highland (HL), midland(ML) and lowland (LL). For survey data collection, a total of 138 households were selected using probabilityproportional sampling technique. They were interviwed using structured interview questions. A focus groupdiscussion was also made with 12 members who were knowledgeable enough about sheep production andrelated intervention events in the study area. Data were analyzed using Statistical Package for the SocialScience (SPSS) version 20. Statistical variations in categorical data were tested by means of cross tabs withsignificant differences at P < 0.05. The overall purposes of sheep rearing across all agroecological zones weresources of income, saving, meat production, sharing the risk and manure production, ranked first to fifthrespectively. Breeding system was generally uncontrolled and no planned selection of breeding stock waspracticed. Rams were herded together with ewes. Body size, coat color and length and fatty tail type (forBonga and Doyogena) were the most frequently reported traits in selecting breeding rams; whereas size, color,tail size and twinning rate were mentioned as traits given due emphasis in choosing future breeding ewes. Theoverall age at first lambing was 12.81±0.14 months, lambing interval was 7.52±.08 months and litter size was1.50±.08 lamb per sheep (P < 0.05). A high lambing month was extended from April to May. As per thecurrent reproductive performance, the sheep breeds of the study could be categorized as medium levelproductivity. Therefore; considering a huge and valuable contribution of sheep production to the producers;besides this survey information further confirmatory record based research is highly recommended to identifyand select superior animals based on their performance for economically important traits. In addition, theuncontrolled breeding practice of the study communities should be minimized.
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