Your browser doesn't support javascript.
loading
Effect of the presence of hens on roosters sperm variables.
Dávila, S G; Campo, J L; Gil, M G; Castaño, C; Santiago-Moreno, J.
Afiliação
  • Dávila SG; Dpto. Mejora Genética Animal, INIA, 28040 Madrid. Spain sgdavila@inia.es.
  • Campo JL; Dpto. Mejora Genética Animal, INIA, 28040 Madrid. Spain.
  • Gil MG; Dpto. Mejora Genética Animal, INIA, 28040 Madrid. Spain.
  • Castaño C; Dpto. Reproducción Animal, INIA, 28040 Madrid. Spain.
  • Santiago-Moreno J; Dpto. Reproducción Animal, INIA, 28040 Madrid. Spain.
Poult Sci ; 94(7): 1645-9, 2015 Jul.
Article em En | MEDLINE | ID: mdl-26009755
This study examines the effect of the presence of hens on sperm variables in Black Barred Andaluza roosters (which respond well to the massage technique). Between 8 and 22 weeks of age, roosters (n = 60) were housed separate from hens in straw litter pens (4 birds/m(2)). Two groups of roosters were then formed to study the effect of hen presence on sperm variables at 36 weeks of age. The first group (n = 11 roosters) was housed with hens (n = 55; sex ratio 1:5), while the second (n = 27 roosters) was again housed separate from hens. Twenty four sperm pools were obtained over 12 weeks (12 pools from each group, each pool produced by mixing semen from 11 males) for analysis. Compared to the no-female-contact group, the roosters living with hens showed significantly (P < 0.05) reduced percentages of non-progressive motile sperm and slow sperm, and significantly increased VCL and VSL values; they also showed trends (P < 0.1) towards increased progressive motility and a higher percentage of rapid sperm. The presence of hens had no significant effect on the number of spermatozoa per ejaculate or sperm concentration. Positive correlations were recorded between VSL and VCL, and between both of these and progressive motility, and the percentage of rapid sperm. In addition, both VSL and VCL correlated negatively with non-progressive motility and the percentage of slow sperm. These results indicate that rooster sperm quality, but not quantity, improves in the presence of hens.
Assuntos
Palavras-chave

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Contagem de Espermatozoides / Motilidade dos Espermatozoides / Espermatozoides / Galinhas Limite: Animals País/Região como assunto: Europa Idioma: En Ano de publicação: 2015 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Contagem de Espermatozoides / Motilidade dos Espermatozoides / Espermatozoides / Galinhas Limite: Animals País/Região como assunto: Europa Idioma: En Ano de publicação: 2015 Tipo de documento: Article