Effects of Sex-linked Dwarf Gene on performance in Broiler Mothers

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Effects of the gene dw, sex-linked dwarfism, upon the performance of white plymouth Rock females were investigated. The experiment was arranged so as to compare full sisters segregating on the gene, dw (dwo vs. DwO). These females were inseminated artificially by the same Cornish male semen and resulting broilers were tested their growth until the 10th week of age.The results are summarized as follows:1. The ratio of the performance of dwo to DwO.Adult boody w eight, 77%; adult metatarsus length, 70%; daily feed consumption 74%; egg weight, 95% at 150 days of age, 95% at 250 days of age, 98% at 350 days of age; sexual maturity, 100%; growing viability, 105%; laying house viability, 104%; feed intake/hatching egg, 82%.2. Broiler test.No significant difference due to dam's genotype was obtained for body weight at 10 weeks of age, feed consumption and viability.These results suggest that dwarf mothers are more advantageous than normal females in broiler production.
日本家禽学会の論文