Genetic parameters of growth, egg production and egg quality traits in White Leghorn Singh Balvir, Research Scholar, Singh Harpal, Associate Professor, Singh C.V., Assistant Professor, Singh Brijesh, Assistant Professor Department of Animal Science, Govind Ballah Pant University of Agriculture and Technology, Pantnagar - 263 145. Abstract Data from 1234 progeny of 304 dams mated with 63 sires from a single hatch of commercial White Leghom strain were analysed for growth, egg production and egg quality traits. The average of 12 and 36 week body weight. age at sexual maturity, egg production upto 280 days of age, 32 week egg weight, specific gravity, shape index and egg mass were 802.04±2.57 g., 1579.18±4.04 g., 155.38±0.25 days, 118.64±0.68 eggs.54.17±109.. 1.09±0.033,73.53±0.07 percent and 6626.65±0.29 g, respectively. The heritability of the above traits were 0.797±0.142. 0,458±0.104, 0,437±0.102, 0.164±0.064, 0.579±0.121, 0.391±0.095, 0.459.0±0.104 and 0.107±0.054. respectively. Ine genetic, phenotypic and environmental correlations of body weight at 12 week of age were found to be positive with all the traits except age at sexual maturity and specific gravity while 36 week body weight was negatively correlated with age at sexual maturity, egg production and specific gravity. Age at sexual maturity was negatively correlated with other traits except with specific gravity. Egg production was found to be positively correlated with shape index and egg mass but negatively with egg weight and specific gravity on genetic level. The correlation of egg weight with shape index and egg mass were positive while negative with specific gravity. Specific gravity was negatively correlated with shape index and egg mass while shape index and egg mass were positively correlated. Top Key words White Leghom, heritability, genetic correlation. Top |