Productivity of Sin Cheng duck over three generations
The objective of the study was to evaluate the reproductive performance of three generations of Sin Cheng duck's nuclear herds. Ducks were reared in captivity with a playground and large bath. The research was conducted at Lao Cai Poultry Breeding Company from January 2017 to 2020. There were 2000 duck of initial generation, 2050 ducks of seond generation, 2030 ducks of third generation and reared from the first day to 73th week age. Results of observing generations showed that the survival percentage was from 95.20 to 97.00%; the weight of male duck at 8 weeks was 1772.10 - 1795.26g /duck and that of female duck was 1684.71 - 1698.29g /duck; At 22th week of age, the weight of male duck was 2273.25 - 2350.62g /duck and that of female duck was 2164.29 - 2250.75g /duck. The feed consumption / kg body weight gain was from 1NT-22th week of age in the initial generation was 16.013g /duck and the second generation was 16,155g/duck. The first egg laying age of Sin Cheng ducks was started was from 149 days, the 5% laying age was 161 days, 50% laying age was 192 days and peak laying was 223 days; In the seond generation was 148; 161; 190 and 218 days. In the period of 22 - 73th week age, the average laying percentage was 42.24% to 45.07%. The egg performance/hen /73th week age was 153.75 to 164.05 eggs. The feed consumption/10 eggs at 22-73th week age was averaged 4.94 kg feed / 10 eggs in the initial generation, 4.63 kg feed / 10 eggs in generation 1 and 4.58 kg feed/10 eggs in the second generation. The average percentage of eggs with embryos was 94.37% to 95.52%, the hatching percentage/eggs with embryos was 92.38% to 94.11%, the duck style 1 / total incubation egg was 84.16 to 84.71%.
