Selectively stabilizing productivity of the super meat 4 CT duck lines
The objective of this research was selected stabilize of the 4 CT duck lines, applying a selection method based on the breeding value combined with the selection index. Results after 3 selective generations: The CT1 duck line has a body weight of 7 weeks of male ducks reaching 3392.20g, females reaching 3253.28g, the genetic coefficient of the body weight traits of 7 weeks of age is 0.46, the genetic progress achieved in the male duck was 28.16g / generation, in the female duck was 20.43g / generation, the egg yield / 42 weeks of laying reached 186.35 eggs, the embryo ratio reached 89.74%, the rate of hatching / total eggs with embryos reached 81.52%. CT2 duck line has a body weight of 7 weeks old male reached 3279.64g, female duck reached 3071.26g, genetic coefficient of body weight traits of 7 weeks old was 0.42, genetic progress achieved in male ducks is 23.98g / generation, in female ducks is 18.16g / generation, egg production / 42 weeks laying reaches 191.21 eggs, embryo rate reaches 90.20%, hatching rate / total eggs embryos reached 81.83%. The CT3 duck line has egg yield / 42 weeks of laying to reach 207.40 eggs, the genetic coefficient of the egg yield trait of 20 weeks of laying is 0.22, the genetic progress achieved is 0.375 eggs / generation. CT4 duck line has egg yield / 42 weeks of laying to 217.52 eggs, the genetic coefficient for egg yield traits of 20 weeks of laying was 0.24, genetic progress was 0.665 eggs / generation.
