Effect of selection for body weight in three lines of Kapanese quail

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Abstract

In this study traits of body weight in different ages and effect of selection on breeding value ‎at 42 days were investigated in three strains of Japanese quail for two generation. In the first ‎generation 51 male and 51 female of each strain were randomly selected from the base ‎population and one male with one female were located in‏ ‏each cage. Body weight‏ ‏‎(BW) of the ‎progeny was measured at 14, 28, 42 and 49 days of age. For the second generation in White, ‎Canadian Wild and Brown strains a number of 30, 40 and 35 pairs of male and female birds ‎that have the highest BV were selected. Mean differential of breeding value in two generations ‎for male and female in White strain were 10.7 and 10.2 gr, in Canadian wild strain were 8.6 and ‎five gr and in Brown strain were four and 9.1 gr, respectively. Heritability of BW at 14, 28 and ‎‎42 days for White strain was 0.37, 0.26, 0.74, Canadian wild strain was 0.21, 0.17 and 0.44 and ‎for Brown strain were 0.39, 0.45 and 0.52, respectively. ‎

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