Genetic evaluation of growth rate and efficiency-related traits in Dorper × local crossbred sheep population
The present study was carried out to estimate genetic and phenotypic parameters for growth rate and efficiency-related traits in Dorper crossbred sheep population. Data on body weight collected from 2012 to 2021 at Debre Birhan Agricultural Research Center, Amhara Regional State, Ethiopia, were used...
| Autores principales: | , , , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Springer (part of Springer Nature)
2025
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/169019 |
| _version_ | 1855536929389412352 |
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| author | Yeshaw, Shanbel Goshme, Shenkute Abebe, Aschalew Bisrat, Asfaw Abebe, Ayele Zewdie, Tesfaye Areaya, Alemnew Alemayehu, Liulseged Kebede, Ashenafi Getachew, Tesfaye |
| author_browse | Abebe, Aschalew Abebe, Ayele Alemayehu, Liulseged Areaya, Alemnew Bisrat, Asfaw Getachew, Tesfaye Goshme, Shenkute Kebede, Ashenafi Yeshaw, Shanbel Zewdie, Tesfaye |
| author_facet | Yeshaw, Shanbel Goshme, Shenkute Abebe, Aschalew Bisrat, Asfaw Abebe, Ayele Zewdie, Tesfaye Areaya, Alemnew Alemayehu, Liulseged Kebede, Ashenafi Getachew, Tesfaye |
| author_sort | Yeshaw, Shanbel |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The present study was carried out to estimate genetic and phenotypic parameters for growth rate and efficiency-related traits in Dorper crossbred sheep population. Data on body weight collected from 2012 to 2021 at Debre Birhan Agricultural Research Center, Amhara Regional State, Ethiopia, were used to estimate phenotypic and genetic parameters for daily gain from birth to weaning (DG0-3), daily gain from weaning to 6 months (DG3-6), and daily gain from 6 months to yearling (DG6-12) and corresponding Kleiber ratios (KR0-3, KR3-6, KR6-12), efficiency of growth (GE0-3, GE3-6, GE6-12), and relative growth rate (RG0-3, RG3-6, RG6-12). Genetic parameters were estimated by restricted maximum likelihood (REML) procedure fitting six different univariate animal models and the most appropriate model for each trait was determined by log-likelihood ratio test. Multivariate analysis was carried out to estimate correlations between traits. Year and season of birth had a significant effect (p<0.001) in all studied traits. Direct heritability estimates for DG0-3, DG3-6, DG6-12, KR0-3, KR3-6, KR6-12, GE0-3, GE3-6, GE6-12, GR0-3, GR3-6, and GR6-12 were 0.45±0.15, 0.04±0.06, 0.15±0.11, 0.30±0.08, 0.13±0.11, 0.14±0.12, 0.34±0.15, 0.39±0.17, 0.31±0.14, 0.25±0.08, 0.23±0.13, and 0.23±0.13 respectively. Genetic correlation estimates between DG3-6 and other traits were positive and high in magnitude to their respective growth phase (0.95, 0.86, and 0.91 for KR3-6, GE3-6, and GR3-6 respectively). As the Dorper crossbred sheep are reaches market weight at about 6 months of age, focusing on improving traits measured during weaning to 6 months of age is more feasible. Selection based on DG3-6 is recommended to improve efficiency-related traits. |
| format | Journal Article |
| id | CGSpace169019 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Springer (part of Springer Nature) |
| publisherStr | Springer (part of Springer Nature) |
| record_format | dspace |
| spelling | CGSpace1690192026-01-14T05:36:17Z Genetic evaluation of growth rate and efficiency-related traits in Dorper × local crossbred sheep population Yeshaw, Shanbel Goshme, Shenkute Abebe, Aschalew Bisrat, Asfaw Abebe, Ayele Zewdie, Tesfaye Areaya, Alemnew Alemayehu, Liulseged Kebede, Ashenafi Getachew, Tesfaye heritability genetic correlation genetic parameter efficiency-related traits additive coefficient of variation The present study was carried out to estimate genetic and phenotypic parameters for growth rate and efficiency-related traits in Dorper crossbred sheep population. Data on body weight collected from 2012 to 2021 at Debre Birhan Agricultural Research Center, Amhara Regional State, Ethiopia, were used to estimate phenotypic and genetic parameters for daily gain from birth to weaning (DG0-3), daily gain from weaning to 6 months (DG3-6), and daily gain from 6 months to yearling (DG6-12) and corresponding Kleiber ratios (KR0-3, KR3-6, KR6-12), efficiency of growth (GE0-3, GE3-6, GE6-12), and relative growth rate (RG0-3, RG3-6, RG6-12). Genetic parameters were estimated by restricted maximum likelihood (REML) procedure fitting six different univariate animal models and the most appropriate model for each trait was determined by log-likelihood ratio test. Multivariate analysis was carried out to estimate correlations between traits. Year and season of birth had a significant effect (p<0.001) in all studied traits. Direct heritability estimates for DG0-3, DG3-6, DG6-12, KR0-3, KR3-6, KR6-12, GE0-3, GE3-6, GE6-12, GR0-3, GR3-6, and GR6-12 were 0.45±0.15, 0.04±0.06, 0.15±0.11, 0.30±0.08, 0.13±0.11, 0.14±0.12, 0.34±0.15, 0.39±0.17, 0.31±0.14, 0.25±0.08, 0.23±0.13, and 0.23±0.13 respectively. Genetic correlation estimates between DG3-6 and other traits were positive and high in magnitude to their respective growth phase (0.95, 0.86, and 0.91 for KR3-6, GE3-6, and GR3-6 respectively). As the Dorper crossbred sheep are reaches market weight at about 6 months of age, focusing on improving traits measured during weaning to 6 months of age is more feasible. Selection based on DG3-6 is recommended to improve efficiency-related traits. 2025-01-14T20:21:00Z 2025-01-14T20:21:00Z Journal Article https://hdl.handle.net/10568/169019 en Limited Access Springer (part of Springer Nature) Shanbel Yeshaw, Shenkute Goshme, Aschalew Abebe, Asfaw Bisrat, Ayele Abebe, Tesfaye Zewdie, Alemnew Areaya, Liulseged Alemayehu, Ashenafi Kebede, Tesfaye Getachew. (24/6/2024). Genetic evaluation of growth rate and efficiency-related traits in Dorper × local crossbred sheep population. Tropical Animal Health and Production, 55. |
| spellingShingle | heritability genetic correlation genetic parameter efficiency-related traits additive coefficient of variation Yeshaw, Shanbel Goshme, Shenkute Abebe, Aschalew Bisrat, Asfaw Abebe, Ayele Zewdie, Tesfaye Areaya, Alemnew Alemayehu, Liulseged Kebede, Ashenafi Getachew, Tesfaye Genetic evaluation of growth rate and efficiency-related traits in Dorper × local crossbred sheep population |
| title | Genetic evaluation of growth rate and efficiency-related traits in Dorper × local crossbred sheep population |
| title_full | Genetic evaluation of growth rate and efficiency-related traits in Dorper × local crossbred sheep population |
| title_fullStr | Genetic evaluation of growth rate and efficiency-related traits in Dorper × local crossbred sheep population |
| title_full_unstemmed | Genetic evaluation of growth rate and efficiency-related traits in Dorper × local crossbred sheep population |
| title_short | Genetic evaluation of growth rate and efficiency-related traits in Dorper × local crossbred sheep population |
| title_sort | genetic evaluation of growth rate and efficiency related traits in dorper local crossbred sheep population |
| topic | heritability genetic correlation genetic parameter efficiency-related traits additive coefficient of variation |
| url | https://hdl.handle.net/10568/169019 |
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