Effect of spraying and sprinkling fresh water on aigamo duck (Crossbred-Wild and Domestic ducks) eggs on hatchability and incubational egg weight losses
1999
Izumi, T. (Ishikawa Prefecture Coll. of Agriculture, Nonoichi (Japan)) | Yonebayashi, M. | Magae, M. | Sakakida, S.
The effects of spraying and sprinkling 13 to 16 degrees C fresh water every other day on the hatchability and egg weight losses during 26 days of incubation were investigated in 1196 eggs containing 175 infertile eggs of Aigamo ducks, crossbred between wild and domestic varieties. The hatchability of fertile eggs for non-water treated control, fresh water sprayed and fresh water sprinkled eggs were 59.2%, 73.5% and 76.7%, respectively. Results indicate significantly higher hatchability of sprayed and sprinkled over control eggs (p0.01). Duckling weights at hatching to the egg weight on the day laid and of egg weight at day 0 of incubation were approximately 67%, 68%, respectively. The percentages of duckling weights at hatching to egg weight on the day laid and to egg weight at day 0 of incubation were ranged between 66.94% to 67.11%, and 67.55% to 67.72%, respectively. These results are consistent with Rahn's report in 1981 that poult weight at hatching should be approximately 67% of the initial egg mass. The percentages of egg weight loses in hatched eggs were 12.53 +- 0.31% (n
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