Genetic analysis of juvenile growth and carcass traits in a full diallel mating in selected colored broiler lines     

Rajkumar U  Sharma RP  Padhi MK  Rajaravindra KS  Reddy BL  Niranjan M  Bhattacharya TK  Haunshi S  Chatterjee RN 《Tropical animal health and production》2011,43(6):1129-1136

The juvenile growth and carcass traits were evaluated in a 4 × 4 full diallel crossing involving four colored broiler chicken lines viz., Naked neck (NN), Dwarf, Punjab Broiler-1 (PB-1), and Punjab Broiler-2 to study the performance and crossbreeding parameters. The data on 2,280 chicks were analyzed using least squares techniques to assess the effect of genetic group, and the significant traits were further analyzed for crossbreeding parameters. Genetic group had significant influence on the body weights and carcass traits. The cross of PB-1 × NN recorded significantly (p ≤ 0.05) higher body weight at 6 weeks of age. The data revealed that general combining ability (GCA), specific combining ability (SCA), maternal ability (MA), sex-linked effect (SE), and purebred effects significantly influenced the growth and carcass traits in the broiler crosses. The crossbred PB-1 × NN showed positive heterosis for growth as well as carcass traits. The results suggest that GCA, SCA, SE, and MA are important in the inheritance of the body weights and carcass traits indicating the presence of both additive and nonadditive genetic variation along with reciprocal effects. Therefore, pure line selection along with development of specialized sire and dam lines followed by crossing will improve the growth performance and benefit the poultry farmers. It is concluded that PB-1 as a male line and NN as a female line performed significantly higher, therefore, may be used for improving the performance of colored broilers.  相似文献   

Genetic analysis of growth and egg production traits in synthetic colored broiler female line using animal model     

Prince  L. Leslie Leo  Rajaravindra  K. S.  Rajkumar  U.  Reddy  B. L. N.  Paswan  C.  Haunshi  S.  Chatterjee  R. N. 《Tropical animal health and production》2020,52(6):3153-3163

Tropical Animal Health and Production - Variance and genetic parameters were estimated for growth and production traits of synthetic broiler female line (PB-2) using REML animal model to delineate...  相似文献