Results of study on the productive capacity of French duck R71
2005
Phung Duc Tien | Tran Cong Xuan | Duong Thi Anh Dao | Hoang Van Tieu | Vu Thi Thao | Tran Thi Cuong | nguyen Manh Hng | Pham Nguyet Hang | Tran Van Hung
The survivability of R71 grand-parent muscovy ducks at the periods of chick, growth and pullet is of 97.2 - 100 percent. At 25 weeks of age, the E, F, G, H strains respectively weigh 4,238.5; 2,620.8; 4,147.0 and 2,552.9 g. The egg productivity/female/2 laying cycles of the F and H strains is 185.76 and 194.3 eggs. Respectively, the feed consumption/10 eggs is 4.74 and 4.57 g. The Haugh unit of the H strain is 85.73, the egg fertility 93.29 percent - 92.72 percent and the 1st class hatchability/ total eggs hatched 81.20 - 80.27 percent. The survivability of R71 parent muscovy ducks at the periods of chick, growth and pullet is of 97.25 - 98.79 percent. The EF male weighs 4,651.2 g and the GH female 2,631.0 g at 25 weeks old. The EF male consumes 27.61 kg of feed and the GH female 16.59 kg at 1 - 25 weeks old. The egg productivity/GH female/cycle I is 115.11 eggs and the feed consumption/10 eggs 4.28 kg. The egg weight averages 70.71 g, the Haugh unit 85.50, the egg fertility 91.2 percent and the hatchability/total eggs hatched 80.22 percent. The survivability of commercial muscovy ducks at 84 days old is of 97.55 percent. The male weighs 4,278.3 g and the female 2,556.7 g. The feed consumption/kg weight gain reaches 3.0 - 3.1 kg, and the carcass meat makes up 71 - 74 percent, protein 19.4 - 21.9 percent and lipid 1.51 - 0.84 percent
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