Evaluation of Naked neck broiler genotypes under tropical environment

摘要: Naked neck broilers were evaluated for juvenile growth performance and inheritance of traits (body weight at different ages) in the present study utilizing data on 850 birds produced from 40 sires 120 dams. The population was tested Hardy-Weinberg equilibrium Mendelian segregation based gene genotype frequencies. frequencies 0.53 (Na) 0.47 (na); 0.22 (NaNa), 0.61 (Nana) 0.17 (nana) population. deviated frequency segregation. mean body weights NaNa, Nana nana 6 weeks age 1314.±9.67, 1286.34±5.87 1259±12.85 g, respectively. homozygous dominant (NaNa) heterozygous had significantly higher 4 indicating pronounced effect Na as advances. ages highly heritable shank length, a conformatory trait moderately heritable. genetic phenotypic correlations positively correlated between except with day-old weight. length positive correlation 4- 6-week weights. suggested that selection criterion can be pre poned to 4-week instead