Genetic parameters and trends of growth traits in community-based breeding programs of Abera sheep in Ethiopia
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 cooperati...
| Autores principales: | , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Taylor and Francis Group
2023
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/126524 |
| _version_ | 1855525664590921728 |
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| author | Alemayehu, Amelmal Mirkena, Tadele Melesse, Aberra Getachew, Tesfaye Haile, Aynalem |
| author_browse | Alemayehu, Amelmal Getachew, Tesfaye Haile, Aynalem Melesse, Aberra Mirkena, Tadele |
| author_facet | Alemayehu, Amelmal Mirkena, Tadele Melesse, Aberra Getachew, Tesfaye Haile, Aynalem |
| author_sort | Alemayehu, Amelmal |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | 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. |
| format | Journal Article |
| id | CGSpace126524 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | Taylor and Francis Group |
| publisherStr | Taylor and Francis Group |
| record_format | dspace |
| spelling | CGSpace1265242026-01-13T22:11:44Z Genetic parameters and trends of growth traits in community-based breeding programs of Abera sheep in Ethiopia Alemayehu, Amelmal Mirkena, Tadele Melesse, Aberra Getachew, Tesfaye Haile, Aynalem selection sheep genetic gain heritability cbbp goal 1 no poverty sheep poverty reduction, livelihoods and jobs smwt 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. 2023-01-03T22:53:21Z 2023-01-03T22:53:21Z Journal Article https://hdl.handle.net/10568/126524 en Limited Access Taylor and Francis Group Amelmal Alemayehu, Tadele Mirkena, Aberra Melesse, Tesfaye Getachew, Aynalem Haile. (1/5/2022). Genetic parameters and trends of growth traits in community-based breeding programs of Abera sheep in Ethiopia. Acta Agriculturae Scandinavica, Section A - Animal Science. |
| spellingShingle | selection sheep genetic gain heritability cbbp goal 1 no poverty sheep poverty reduction, livelihoods and jobs smwt Alemayehu, Amelmal Mirkena, Tadele Melesse, Aberra Getachew, Tesfaye Haile, Aynalem Genetic parameters and trends of growth traits in community-based breeding programs of Abera sheep in Ethiopia |
| title | Genetic parameters and trends of growth traits in community-based breeding programs of Abera sheep in Ethiopia |
| title_full | Genetic parameters and trends of growth traits in community-based breeding programs of Abera sheep in Ethiopia |
| title_fullStr | Genetic parameters and trends of growth traits in community-based breeding programs of Abera sheep in Ethiopia |
| title_full_unstemmed | Genetic parameters and trends of growth traits in community-based breeding programs of Abera sheep in Ethiopia |
| title_short | Genetic parameters and trends of growth traits in community-based breeding programs of Abera sheep in Ethiopia |
| title_sort | genetic parameters and trends of growth traits in community based breeding programs of abera sheep in ethiopia |
| topic | selection sheep genetic gain heritability cbbp goal 1 no poverty sheep poverty reduction, livelihoods and jobs smwt |
| url | https://hdl.handle.net/10568/126524 |
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