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- Title
COMBINING ABILITIES AND HETEROSIS OF BODY WEIGHT IN A DIALLEL CROSS FROM THREE SOUTH AFRICAN INDIGENOUS CHICKEN GENOTYPES.
- Authors
TYASI, T. L.; NORRIS, D.; NG’AMBI, J. W.; MABELEBELE, M.
- Abstract
This study was conducted to estimate heterosis effects, specific and general combining abilities existing within growth traits. A 3 x 3 diallel mating system involved three indigenous chicken genotypes namely Potchefstroom Koekoek (P), Venda (V) and Ovambo (O) was used to produce three purebreds (P x P, V x V, O x O), three crossbreds (P x O, P x V, O x V) and three reciprocals (O x P, V x P, V x O). The body masses of 225 chicks recorded at ages 0, 4, 8 and 10 weeks, were used to make an estimation of heterosis, specific combining ability (SCA) and general combining ability (GCA). Results indicated that the crossbreed between P sires and O dams provided the uppermost heterosis for growth traits (30.07%). GCA and SCA showed the importance (P ≤ 0. 05) for body weight from hatch up to 10 weeks of age. P genotype gave the positive effects of GCA and P x V crossbreed resulted in positive effects of SCA. It thus, be concluded that Potchefstroom Koekoek genotype might be used in the crossbreeding with other indigenous chicken genotypes to improve growth traits.
- Subjects
CROSSBREEDING; BODY weight; HETEROSIS; GENOTYPES; SOUTH Africans; CHICKENS; CHICKS
- Publication
Applied Ecology & Environmental Research, 2019, Vol 17, Issue 4, p9717
- ISSN
1589-1623
- Publication type
Article
- DOI
10.15666/aeer/1704_97179723