Reproductive efficiency and metabolism of female broiler breeders as affected by genotype, feed allocation, and age at photostimulation. 3. Reproductive efficiency.


A 3 x 4 x 2 factorial trial was performed to test the effect of 3 broiler breeder strains, 4 target BW profiles, and 2 photostimulation ages on egg and chick production. Hubbard Hi-Y, Ross 508, and Ross 708 pullets were reared on BW profiles that separated at 4 wk and converged at 32 wk: standard (approximate mean target BW profile of the 3 strains used… (More)


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