埃塞俄比亚阿贝拉羊社区育种计划中生长性状的遗传参数和趋势

IF 0.8 4区农林科学 Q3 AGRICULTURE, DAIRY & ANIMAL SCIENCE

Acta Agriculturae Scandinavica Section A-Animal Science Pub Date : 2022-05-01 DOI:10.1080/09064702.2022.2067590

A. Alemayehu, T. Mirkena, A. Melesse, T. Getachew, A. Haile

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引用次数: 1

摘要

本研究的目的是估计埃塞俄比亚阿贝拉羊生长性状的遗传参数和遗传趋势，并评估社区育种计划(CBBPs)下阿贝拉羊的近交水平。采用由性别、育种者合作、季节和出生类型的固定效应组成的一般线性模型来分析生长性状。采用基于限制最大似然法的单变量动物模型估计了各育种合作社的方差成分和遗传参数。所有固定效应均对生长性状有显著影响(P < 0.05)。还采用多变量分析计算生长性状之间的相关估计值。根据最佳拟合模型，6个育种合作社断奶重(WWT)和6个月重(SMWT)的直接遗传力分别为0.12±0.12 - 0.38±0.17和0.20±0.10-0.49±0.01。在选择年份，阿伯拉羊育种合作社在WWT (0.15-0.44 kg)和SMWT (0.21-0.57 kg)方面取得了积极的遗传进展。

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Genetic parameters and trends of growth traits in community-based breeding programs of Abera sheep in Ethiopia

ABSTRACT The objectives of the current study were to estimate the genetic parameters and genetic trends for growth traits, and to assess inbreeding levels of Abera sheep under community-based breeding programs (CBBPs) in Ethiopia. General linear model consisting of the fixed effects of sex, breeder cooperative, season and birth type was used to analyze growth traits. Variance components and genetic parameters were estimated within each breeder cooperative following univariate animal model based on the restricted maximum likelihood method. All fixed effects influenced (P < 0.05) the growth traits. Multivariate analysis was also employed to compute correlation estimates among growth traits. Based on the best fitted models, the direct heritability for weaning weight (WWT) and six-month weight (SMWT) in the six breeder cooperatives were in the ranges of 0.12 ± 0.12–0.38 ± 0.17 and 0.20 ± 0.10–0.49 ± 0.01, respectively. Range of positive genetic progress in WWT (0.15–0.44 kg) and SMWT (0.21–0.57 kg) was achieved in Abera sheep breeder cooperatives during selection years.

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来源期刊

Acta Agriculturae Scandinavica Section A-Animal Science 农林科学-奶制品与动物科学

CiteScore

2.30

自引率

0.00%

发文量

审稿时长

>36 weeks

期刊介绍： Acta Agriculturæ Scandinavica, Section A – Animal Science publishes results of original research in animal science and their applications related to the following topics: -Animal breeding and genetics -Molecular genetics -Animal physiology and reproduction -Nutrition and feeding -Animal behaviour and welfare -General animal husbandry and systems of production, including economic and technical aspects -Hygiene and quality of animal products In addition to original articles, covering basic as well as applied subjects, the journal features review articles and short communications. Acta Agriculturæ Scandinavica, Section A – Animal Science forms part of a trilogy of titles published on behalf of the Nordic Association of Agricultural Scientists (NJF). The series also includes Section B - Soil & Plant Science and the recently launched Section C - Food Economics . Acta Agriculturae Scandinavica A, B and C are available to purchase as a combined subscription. This provides access to all three journals in the series, and is available to institutional subscribers only. For full pricing information, please view the Taylor & Francis Journals Price List here. Scientists in research, teaching and extension with specialised interest in animal science and production.