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The effect of diet and artificial incubation on fertility and hatchability of wood duck (Aix sponsa) eggs and survival of young was measured. Hatchability of eggs from hens fed a diet containing 37 percent protein was increased significantly (P <0.05) over that of hens fed a diet containing 17 percent protein. Hatchability was also significantly (P<0.005) greater for eggs incubated 10 days under hens before being placed in an incubator than for eggs placed in an incubator for the entire period. Ducklings that hatched from naturally started incubation survived at a much higher rate (P<0.001). Egg fertility was not affected by the diets.
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Hatchability tests with eggs from captive wood ducks