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Quality classes for eggs and chicks

, : Quality classes for eggs and chicks. Ptitsevodstvo ( 8): 16-18

For large numbers of eggs of fowls of the meat cross Belarus-9 and egg-laying crosses Yantar-1 and Zarya-17, incubated in 1987-1988, an 85% reduction in egg hatchability occurred for eggs with a high degree of shell damage, a 20% reduction for eggs with slight-to-medium damage, and a 10% reduction for eggs with the shape index >81% or <67%. For 162 chicks hatched from eggs with slight to medium damage, 71 were passed as suitable for rearing; for these, survival to 3 months of age was 95.7%.

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Moiseeva, I.G.; Tolokonni-Kova, E.V., 1968: Quality of fowl eggs and hatchability of chicks. 4665 fertile Russian White eggs were incubated in a 3-yr. period. For egg weights of <45, 46-50, 51-55, 56-60 and 61-65 g., hatchability was 75, 81, 81, 77 and 74% resp. For shell thicknesses of 0.300-0.339, 0.340-0.359, 0.360-0.439 and 0.440-0...

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