|J. Chin. Soc. Anim. Sci. 35(Suppl.)|
鍾秀枝(1)、 林德育(1)、 黃祥吉(1)、 林義福(1)、 張秀鑾(2)、吳明哲(1)
In order to set up reference family for gene mapping, the F1 hybrid progenies were produced from reciprocal crosses between LRI native chicken inbred line 9(L9) and Leghorn(P), and F2 were produced by F1 full-sib mating. The hybrid P9 was produced by L9 hen mated with P cock, and 9P was produced by P hen mated with L9 cock. The growth and reproduction traits of F1 and F2 from different mating designs were examined. Results showed the body weights at 16 weeks of 9P were heavier than P9 in both genders of F1, and the cockerels of 9P are also heavier than those of P9 (P< 0.001). The body weight at 40 weeks of P9 were significant lighter than 9P in F1 hens (P< 0.05). Showing an early age at first egg, F1 hens of P9 produced more eggs up to 40 weeks of age (P< 0.001). However, the age at first egg and the egg numbers up to the 40 weeks of age did not differ significantly between P9 and 9P in F2. The egg weight at 40 weeks of P9 was heavier than those of 9P in F2. Neither F1 nor F2 differed significantly between P9 and 9P for body weight at first egg and broody days up to 40 weeks of age.
key Words: LRI Native Chicken, Leghorn, hybrid