Raça de galinha "P P P P" (Pescoço Pelado Preta Piracicaba) III - Efeitos da consanguinidade
DOI:
https://doi.org/10.1590/S0071-12761950000100007Resumen
Four years of inbreeding and its effects on fertility, hatchability, viability and egg production in the new bred "PPPP" (Pescoço Pelado Preta Piracicaba) (naked neck and black plumage, Piracicaba) were reported in this paper. It was observed a decrease in fertility, hatchability, viability and egg production as the inbreeding increases. The black plumage naked neck homozygozous chickens are now submitted to a system of uncontrolled mating in the hope that the natural selection will reduce some of the undesirable factors providing abundant material for pedigree control.Descargas
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Publicado
1949-12-30
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Cómo citar
Graner, E. A., & Torres, A. P. (1949). Raça de galinha "P P P P" (Pescoço Pelado Preta Piracicaba) III - Efeitos da consanguinidade. Anais Da Escola Superior De Agricultura Luiz De Queiroz, 7, 55-68. https://doi.org/10.1590/S0071-12761950000100007