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Selection for egg mass in the domestic fowl 1. response to selection

Selection for egg mass in the domestic fowl 1. response to selection

Poultry Science 60(6): 1115-1122

Selection response for daily egg mass from 154-294 days of age in 4 lines of White Leghorns and to determine the possibility of selecting males with high packed-sperm volume (PSV) as a corollary to egg mass. After 3 generations of selection, deviation of the selected lines from the control line in total egg mass per bird for 280 days of production varied from 1307-2173 g. Data failed to support the hypothesis that selection for PSV in males is associated with selection for increasing egg mass. Realized heritability for daily egg mass, obtained by dividing the cumulative corrected response by the cumulative selection differentials, ranged from .23-66 with a mean across lines of .42. Increases in egg mass equal or superior to those observed during the period of selection (154-294 days of age) were also observed during the 2nd half of the test period (294-434 days).

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Accession: 006380482

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DOI: 10.3382/ps.0601115

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