Genetic analysis of egg production traits in four chicken breeds using a full diallel cross
In the present study, effects of crossbreeding on egg production traits were evaluated using a 4 × 4 full diallel cross involving four chicken breeds: Improved Horro (H), Sasso (S), Potchefstroom Koekoek (K), and Dz-white feathered (D). The experiment included 800 chickens in a completely randomized...
| Autores principales: | , , , |
|---|---|
| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2025
|
| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/175242 |
| _version_ | 1855541007685255168 |
|---|---|
| author | Teshome, Philimon Goshu, G. Esatu, Wondmeneh Dessie, Tadelle |
| author_browse | Dessie, Tadelle Esatu, Wondmeneh Goshu, G. Teshome, Philimon |
| author_facet | Teshome, Philimon Goshu, G. Esatu, Wondmeneh Dessie, Tadelle |
| author_sort | Teshome, Philimon |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | In the present study, effects of crossbreeding on egg production traits were evaluated using a 4 × 4 full diallel cross involving four chicken breeds: Improved Horro (H), Sasso (S), Potchefstroom Koekoek (K), and Dz-white feathered (D). The experiment included 800 chickens in a completely randomized design. Data on egg production traits were collected over 40 weeks (WK). Genotypes exhibited significant variations (P < 0.0001) in age at first egg (AFE), body weight at sexual maturity (BWSM), egg weight at first egg (EWAFE), egg number (EN), hen-housed egg production (HHEP), hen-day egg production (HDEP), and egg mass (EM). Heterosis effects (H<sup>e</sup>) varied widely, with positive H<sup>e</sup> for BWSM and EM in most crosses, while AFE consistently showed negative H<sup>e</sup>. All reciprocal crosses showed positive H<sup>e</sup> for EWAFE, while direct crosses had negative values except H × S and H × D. The K × H cross showed the highest H<sup>e</sup> for HHEP (26.85%), HDEP (29.44%), EM (40.88%), and EN (28.27%). The cross D × H also exhibited strong H<sup>e</sup> for HHEP (25.16%) and EN (24.60%), while K × S ranked second for HDEP (22.60%) and EM (33.89%). Reciprocal crosses showed positive H<sup>e</sup> for BWSM, EWAFE, HHEP, HDEP, EM, and EN, except AFE. General combining ability (GCA) and specific combining ability (SCA) effects were highly significant (P<0.0001) for all traits. Reciprocal effects (RE) and maternal effects (M<sup>e</sup>) also influenced trait expression. GCA/SCA ratios indicated that non-additive effects influenced AFE, while additive effects influenced EWAFE. Moderate ratios for HHEP, HDEP, EM, and EN suggested a balance between additive and non-additive effects. Optimizing crossbreeding strategies, aligning with synthetic breed development, using a K sire with H and S dams, and a D sire with H dam, is recommended to improve egg production. |
| format | Journal Article |
| id | CGSpace175242 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | CGSpace1752422025-12-08T10:06:44Z Genetic analysis of egg production traits in four chicken breeds using a full diallel cross Teshome, Philimon Goshu, G. Esatu, Wondmeneh Dessie, Tadelle genetics poultry In the present study, effects of crossbreeding on egg production traits were evaluated using a 4 × 4 full diallel cross involving four chicken breeds: Improved Horro (H), Sasso (S), Potchefstroom Koekoek (K), and Dz-white feathered (D). The experiment included 800 chickens in a completely randomized design. Data on egg production traits were collected over 40 weeks (WK). Genotypes exhibited significant variations (P < 0.0001) in age at first egg (AFE), body weight at sexual maturity (BWSM), egg weight at first egg (EWAFE), egg number (EN), hen-housed egg production (HHEP), hen-day egg production (HDEP), and egg mass (EM). Heterosis effects (H<sup>e</sup>) varied widely, with positive H<sup>e</sup> for BWSM and EM in most crosses, while AFE consistently showed negative H<sup>e</sup>. All reciprocal crosses showed positive H<sup>e</sup> for EWAFE, while direct crosses had negative values except H × S and H × D. The K × H cross showed the highest H<sup>e</sup> for HHEP (26.85%), HDEP (29.44%), EM (40.88%), and EN (28.27%). The cross D × H also exhibited strong H<sup>e</sup> for HHEP (25.16%) and EN (24.60%), while K × S ranked second for HDEP (22.60%) and EM (33.89%). Reciprocal crosses showed positive H<sup>e</sup> for BWSM, EWAFE, HHEP, HDEP, EM, and EN, except AFE. General combining ability (GCA) and specific combining ability (SCA) effects were highly significant (P<0.0001) for all traits. Reciprocal effects (RE) and maternal effects (M<sup>e</sup>) also influenced trait expression. GCA/SCA ratios indicated that non-additive effects influenced AFE, while additive effects influenced EWAFE. Moderate ratios for HHEP, HDEP, EM, and EN suggested a balance between additive and non-additive effects. Optimizing crossbreeding strategies, aligning with synthetic breed development, using a K sire with H and S dams, and a D sire with H dam, is recommended to improve egg production. 2025-09 2025-06-23T08:30:49Z 2025-06-23T08:30:49Z Journal Article https://hdl.handle.net/10568/175242 en Open Access Elsevier Teshome, P., Goshu, G., Esatu, W. and Dessie, T. 2025. Genetic analysis of egg production traits in four chicken breeds using a full diallel cross. Poultry Science 104(9): 105459. |
| spellingShingle | genetics poultry Teshome, Philimon Goshu, G. Esatu, Wondmeneh Dessie, Tadelle Genetic analysis of egg production traits in four chicken breeds using a full diallel cross |
| title | Genetic analysis of egg production traits in four chicken breeds using a full diallel cross |
| title_full | Genetic analysis of egg production traits in four chicken breeds using a full diallel cross |
| title_fullStr | Genetic analysis of egg production traits in four chicken breeds using a full diallel cross |
| title_full_unstemmed | Genetic analysis of egg production traits in four chicken breeds using a full diallel cross |
| title_short | Genetic analysis of egg production traits in four chicken breeds using a full diallel cross |
| title_sort | genetic analysis of egg production traits in four chicken breeds using a full diallel cross |
| topic | genetics poultry |
| url | https://hdl.handle.net/10568/175242 |
| work_keys_str_mv | AT teshomephilimon geneticanalysisofeggproductiontraitsinfourchickenbreedsusingafulldiallelcross AT goshug geneticanalysisofeggproductiontraitsinfourchickenbreedsusingafulldiallelcross AT esatuwondmeneh geneticanalysisofeggproductiontraitsinfourchickenbreedsusingafulldiallelcross AT dessietadelle geneticanalysisofeggproductiontraitsinfourchickenbreedsusingafulldiallelcross |