Analysis of genetic parameters and genetic trends for early growth and reproductive traits of Doyogena sheep managed under community-based breeding program
This study aims to estimate genetic parameters and genetic trends for early growth and reproductive traits of Doyogena sheep. Data used in the study were collected over 6 years (2013–2018). Studied traits were birth weight (BWT), weaning weight (WWT), 6-month weight (SMWT), average daily gains from...
| Autores principales: | , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2023
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/126565 |
| _version_ | 1855530926116700160 |
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| author | Giorgis, Kebede H. Haile, Aynalem Getachew, Tesfaye Kirmani, Manzoor Gemiyu, Deribe |
| author_browse | Gemiyu, Deribe Getachew, Tesfaye Giorgis, Kebede H. Haile, Aynalem Kirmani, Manzoor |
| author_facet | Giorgis, Kebede H. Haile, Aynalem Getachew, Tesfaye Kirmani, Manzoor Gemiyu, Deribe |
| author_sort | Giorgis, Kebede H. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | This study aims to estimate genetic parameters and genetic trends for early growth and reproductive traits of Doyogena sheep. Data used in the study were collected over 6 years (2013–2018). Studied traits were birth weight (BWT), weaning weight (WWT), 6-month weight (SMWT), average daily gains from birth to weaning (ADG0-3), average daily gains from weaning to 6-month age (ADG3-6), average daily gain from birth to 6-month age (ADG0-
6), litter size (LS), lambing interval (LI), age at first lambing (AFL), and annual reproductive rate (ARR). (Co) variance components and genetic parameters were estimated using restricted maximum likelihood (REML). The analyses were carried out using WOMBAT program. Univariate analysis was applied to estimate genetic parameters. Six different animal models were fitted by including or excluding maternal effects. The direct heritability
estimates for BWT, WWT, SMWT, ADG0-3, ADG3-6 and ADG0-6 were 0.33 0.06, 0.31 0.06, 0.14 0.06, 0.13 0.04, 0.11 0.07, and 0.02 0.05 respectively. Direct heritability for LS, LI, and AFL were 0.28 0.12, 0.20 0.5, and 0.001 0.3, respectively. The maternal heritability estimates for BWT, WWT, and LS were 0.24 0.12, 0.60 0.07, and 0.24 0.08, respectively. The genetic correlation between BWT with WWT and BWT with SMWT were 0.21 0.07 and 0.21 0.09, respectively. Genetic progress for most of the studied traits has shown promising improvements. Thus, continuation of selection, therefore, suggested for more improvements in the performance of Doyogena sheep. Direct heritability estimates decrease as lamb age increases and selection based
on earlier body weight will be more efficient. |
| format | Journal Article |
| id | CGSpace126565 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | CGSpace1265652026-01-14T02:10:41Z Analysis of genetic parameters and genetic trends for early growth and reproductive traits of Doyogena sheep managed under community-based breeding program Giorgis, Kebede H. Haile, Aynalem Getachew, Tesfaye Kirmani, Manzoor Gemiyu, Deribe sheep heritability goal 1 no poverty sheep doyogena sheep genetic trend community based breeding poverty reduction, livelihoods and jobs This study aims to estimate genetic parameters and genetic trends for early growth and reproductive traits of Doyogena sheep. Data used in the study were collected over 6 years (2013–2018). Studied traits were birth weight (BWT), weaning weight (WWT), 6-month weight (SMWT), average daily gains from birth to weaning (ADG0-3), average daily gains from weaning to 6-month age (ADG3-6), average daily gain from birth to 6-month age (ADG0- 6), litter size (LS), lambing interval (LI), age at first lambing (AFL), and annual reproductive rate (ARR). (Co) variance components and genetic parameters were estimated using restricted maximum likelihood (REML). The analyses were carried out using WOMBAT program. Univariate analysis was applied to estimate genetic parameters. Six different animal models were fitted by including or excluding maternal effects. The direct heritability estimates for BWT, WWT, SMWT, ADG0-3, ADG3-6 and ADG0-6 were 0.33 0.06, 0.31 0.06, 0.14 0.06, 0.13 0.04, 0.11 0.07, and 0.02 0.05 respectively. Direct heritability for LS, LI, and AFL were 0.28 0.12, 0.20 0.5, and 0.001 0.3, respectively. The maternal heritability estimates for BWT, WWT, and LS were 0.24 0.12, 0.60 0.07, and 0.24 0.08, respectively. The genetic correlation between BWT with WWT and BWT with SMWT were 0.21 0.07 and 0.21 0.09, respectively. Genetic progress for most of the studied traits has shown promising improvements. Thus, continuation of selection, therefore, suggested for more improvements in the performance of Doyogena sheep. Direct heritability estimates decrease as lamb age increases and selection based on earlier body weight will be more efficient. 2023-01-04T18:28:38Z 2023-01-04T18:28:38Z Journal Article https://hdl.handle.net/10568/126565 en Open Access application/pdf Elsevier Kebede H. Giorgis, Aynalem Haile, Tesfaye Getachew, Manzoor Kirmani, Deribe Gemiyu. (17/6/2022). Analysis of genetic parameters and genetic trends for early growth and reproductive traits of Doyogena sheep managed under community-based breeding program. Heliyon, 8 (6). |
| spellingShingle | sheep heritability goal 1 no poverty sheep doyogena sheep genetic trend community based breeding poverty reduction, livelihoods and jobs Giorgis, Kebede H. Haile, Aynalem Getachew, Tesfaye Kirmani, Manzoor Gemiyu, Deribe Analysis of genetic parameters and genetic trends for early growth and reproductive traits of Doyogena sheep managed under community-based breeding program |
| title | Analysis of genetic parameters and genetic trends for early growth and reproductive traits of Doyogena sheep managed under community-based breeding program |
| title_full | Analysis of genetic parameters and genetic trends for early growth and reproductive traits of Doyogena sheep managed under community-based breeding program |
| title_fullStr | Analysis of genetic parameters and genetic trends for early growth and reproductive traits of Doyogena sheep managed under community-based breeding program |
| title_full_unstemmed | Analysis of genetic parameters and genetic trends for early growth and reproductive traits of Doyogena sheep managed under community-based breeding program |
| title_short | Analysis of genetic parameters and genetic trends for early growth and reproductive traits of Doyogena sheep managed under community-based breeding program |
| title_sort | analysis of genetic parameters and genetic trends for early growth and reproductive traits of doyogena sheep managed under community based breeding program |
| topic | sheep heritability goal 1 no poverty sheep doyogena sheep genetic trend community based breeding poverty reduction, livelihoods and jobs |
| url | https://hdl.handle.net/10568/126565 |
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