Comparación de la duración de la inmovilidad muscular, el cociente entre heterófilos y linfocitos y la asimetría fluctuante de pollitos criados con o sin gallina clueca

• M.G. Gil ^[1] ; S.G. Davila ^[1] ; J.L. Campo ^[1]
  1. [1] INIA
• Localización: XVI Jornadas sobre Producción Animal: 19 y 20 de mayo de 2015, Zaragoza / Javier Álvarez Rodríguez (aut.), Begoña Panea Doblado (aut.), Jorge Hugo Calvo Lacosta (aut.), Mireia Blanco Alibés (aut.), José Alfonso Abecia Martínez (aut.), Daniel Villalba Mata (aut.), María Ángeles Latorre Górriz (aut.), Vol. 2, 2015, ISBN 978-84-606-7969-1, págs. 513-515
• Idioma: español
• Títulos paralelos:
  • Comparison of the tonic immobility duration, heterophil to lymphocyte ratio, and fluctuating asymmetry of chicks reared with or without a broody hen
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• Resumen

  • The purposes of this study were to determine whether rearing with a broody hen influenced duration of tonic immobility, heterophil to lymphocyte ratio, and relative fluctuating asymmetry of chicks. A total of 120 chicks (60 reared with a broody hen and 60 reared without a broody hen), were analyzed at 6 weeks of age. Broody hens were observed in 12 different Spanish breeds and all the chicks were from an F 1 cross between the Blackbarred Andaluza and the Black Castellana breeds. Tonic immobility duration was significantly longer (P < 0.0001) in chicks reared without a broody hen than in those reared with a broody hen, suggesting that the presence of a broody hen reduces fear in chicks. There were no significant differences in the heterophil to lymphocyte ratio and the relative fluctuating asymmetry of leg length, leg width, and toe length, although the fluctuating asymmetry of wing length and the combined fluctuating asymmetry value of the 4 traits tended to be significant. These results suggest no effect on stress in chicks in the presence of a broody hen.