Raça de galinha "P P P P" (Pescoço Pelado Preta Piracicaba) III - Efeitos da consanguinidade

Raça de galinha "P P P P" (Pescoço Pelado Preta Piracicaba) III - Efeitos da consanguinidade^*

E. A. Graner; A. P. Torres

Escola Superior de Agricultura "Luiz de Queiroz" Universidade de São Paulo

ABSTRACT

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.

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*

Trabalho da Seção de Avicultura.

Datas de Publicação

• Publicação nesta coleção
  06 Nov 2012
• Data do Fascículo
  1950