Genetic variations in local ecotype Turkeys. 2. effect of genotype, sex and hatch batch on growth-related measurements in live birds
Paper Details
Genetic variations in local ecotype Turkeys. 2. effect of genotype, sex and hatch batch on growth-related measurements in live birds
Abstract
Three locally adapted ecotype parental turkey lines comprising of Black (B), Bronze (Br) and White (W) plumage colored genotypes were used as experimental lines with each line comprising of 7 males and 15 females. A total of 228 poults generated from the crossing of the parental genotypic lines were used for this study. The effects of genotype, sex, hatch batch and genotype x sex interaction were tested on bodyweight, breast width, drumstick length, body length, shank length and keel length at 4, 8 and 12 weeks of age. There was no significant (p<0.05) hatch batch effect as well as genotype by sex interaction effect on all traits measured. There was significant genotype effect on bodyweight at 8 and 12 weeks with W lines expressing higher bodyweight followed by Br and B lines respectively. Body length and breast width also had significant genotype effect at 8 and 12 weeks with W and Br lines exhibiting higher body length and breast width than B lines. Keel length was significantly higher in W lines at 8 weeks while there was no significant genotype effect at 4 and 12 weeks. However, drumstick length showed significant genotype effect with Br lines having higher drumstick length than W and B lines at 8 and 12 weeks. In addition, shank length was significantly higher in B and Br lines than in W lines. Moreover, there was no significant genotype effect at 4 weeks across all traits. In addition, there was significant sex effect with the males being significantly higher than females in all the traits measured at 4, 8 and 12 weeks of age.
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