埃塞俄比亚阿法尔州牧区和农牧区绵羊和山羊的农场繁殖性能和性状偏好

A. Bk, Abrha Hb, H. Birhane, Shi-Jun Ge
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引用次数: 1

摘要

本研究于2018年3月至2019年1月进行,旨在评估埃塞俄比亚阿法尔牧区和农牧区绵羊和山羊生产者的繁殖性能和性状偏好。采用半结构化问卷调查和实地观察的方法收集了136个牧区和56个农牧区所需信息。饲养绵羊和山羊有各种各样的原因,包括创收、保险(出售现金以满足意外支出)和经济安全(出售现金以支持可预见的支出)、社会/宗教功能和所有权的声望。在这两个生产系统中,山羊和绵羊的相对重要性仅次于骆驼,分别排在第二和第三位。在本研究中,牧区与农牧区之间绵羊和山羊的繁殖性能均存在显著差异(P<0.05)。农牧区山羊的平均交尾年龄(12.33±0.76个月)和交尾间隔(8.76±2.04个月)显著高于母羊(9.28±1.85个月)和公羊(7.98±2.08个月)。农牧区羊的初产羔龄(12.30±1.18个月)和产羔间隔(9.16±2.66个月)均高于牧区羊。在两个生产体系中,绵羊的主要偏好性状为结对能力(0.46)、生长快(0.41)和长途跋涉,山羊的主要偏好性状为生长快、产奶量和结对能力,总指数分别为0.37、0.32和0.32。针对牧区和农牧生产系统的遗传改良计划需要结合偏好、多用途作用和现有传统放牧和育种做法的特点。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
On Farm Reproductive Performance and Trait Preferences of Sheep and Goat in Pastoral and Agro-Pastoral Areas of Afar Regional State, Ethiopia
This study was conducted from March 2018 to January 2019 with the aim of assessing the reproductive performance and traits preferences of sheep and goats producers in pastoral and agro-pastoral area of Afar, Ethiopia. Semi-structured questionnaires and field observations were used to collect the required information from 136 from pastoral and 56 from agro-pastoral. Sheep and goats were kept for a variety of reasons including income generation, insurance (sale for cash to meet unexpected expenditures) and economic security (sale for cash to support foreseeable expenses), social/religious functions and prestige in ownership. In both production systems, next to camels, goats and sheep were ranked as the second and third most important livestock species in accordance to their relative importance. In the current study, there was a significance differences (P<0.05) in the reproductive performance of both sheep and goats between pastoral and agro-pastoral areas. Goats in agro-pastoral areas had noticeably higher average age at first kidding (12.33 ± 0.76 months), and kidding interval (8.76 ± 2.04 months) whereas they had lower age at first mating both for Doe and bucks (9.28 ± 1.85 and 7.98 ± 2.08 months, respectively). Similarly, sheep in the agro-pastoral areas had higher age at first lambing (12.30 ± 1.18 months) and lambing interval (9.16 ± 2.66 months) than sheep found in the pastoral areas. In both production systems twinning ability (0.46), fast growth (0.41) and trekking long distances were the main preferred sheep traits, whereas fast growth, milk yield and twining ability were the main goat preferred traits with an overall index value of 0.37, 0.32, and 0.32, respectively. Genetic improvement programs targeting pastoral and agro-pastoral production system need to be incorporated the traits of preference, multipurpose roles and the existing traditional herding and breeding practices.
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