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Asian Journal of Poultry Science
  Year: 2012 | Volume: 6 | Issue: 3 | Page No.: 89-96
DOI: 10.3923/ajpsaj.2012.89.96
 
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Phenotypic Response to Mass Selection in the Nigerian Indigenous Chickens
C. Cosmas Ogbu

Abstract:
The study was carried out to estimate phenotypic response in body weight for three generations using mass selection and additive genetic heritability of body weight at 12, 16, 20 and 39 weeks of age (WOA) in males of the Nigerian indigenous chicken. The study took place at the Department of Animal Science, University of Nigeria, Nsukka. Body weight at 39 WOA was the selection criterion. Results showed that body weight increased from 1372.66±16.46 g in G0 generation to 1656.58±27.45 and 1768.75±33.15 g in G1 and G2 generations, respectively. These implied phenotypic responses of 321.09, 373.42 and 231.25 g and cumulative responses of 321.09, 694.51 and 925.76 g for G0, G1 and G2 generations, respectively. There was moderate to high additive genetic heritability for body weight up to 20 WOA (range, 0.24±0.27 to 0.59±0.45) and low to moderate heritability for body weight at 39 WOA (range, 0.13±0.49 to 0.25±0.31). Selection intensity was 2.11 in G0, 1.75 in G1 and 1.16 in G2 generation. Total variance was 198.87 in the last generation indicating the presence of usable variation for further selection. From the results, it was concluded that growth performance in the indigenous chicken can be improved through mass selection especially within the growing period of 12 to 20 WOA.
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How to cite this article:

C. Cosmas Ogbu , 2012. Phenotypic Response to Mass Selection in the Nigerian Indigenous Chickens. Asian Journal of Poultry Science, 6: 89-96.

DOI: 10.3923/ajpsaj.2012.89.96

URL: https://scialert.net/abstract/?doi=ajpsaj.2012.89.96

 
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