Effects of diet quality on growth pattern, serum oxidative status, and corticosterone in Pigeons (Columba livia)

Author: Costantini, David

Source: Canadian Journal of Zoology, Volume 88, Number 8, August 2010 , pp. 795-802(8)

Publisher: NRC Research Press

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Abstract:

Oxidative stress has been suggested to be affected by the growth and developmental period of animals, hence it may play an important role in the trade-off between growth and self-maintenance. In this study, I analysed the effects of two different diet regimes (high-quality diet, HQD; low-quality diet, LQD) on growth pattern, three components of the serum oxidative status (hydroperoxides, antioxidant capacity, and thiols), and serum corticosterone in nestling Pigeons (Columba livia Gmelin, 1789). The growth pattern was similar in the first week of life, after which HQD nestlings grew faster than LQD nestlings. Although there were no differences in serum corticosterone or thiol concentrations, serum oxidative damage increased faster over the nestling phase in HQD than LQD chicks. Serum antioxidant capacity remained stable over time in LQD nestlings and increased in HQD nestlings. This study provides evidence that different growth rates (induced in the absence of any physiological stress or prior nutritional deprivation) are accompanied by different serum oxidative statuses.

On a suggéré que le stress oxydatif est affecté par la croissance et la période de développement des animaux et qu’il peut ainsi jouer un rôle important dans le compromis entre la croissance et le maintien de la santé. La présente étude analyse les effets de deux régimes alimentaires différents (régime de qualité élevée, HQD; régime de qualité inférieure, LQD) sur le patron de croissance, sur trois composantes du statut oxydatif du sérum (hydroperoxydes, capacité antioxydante et thiols) et sur la corticostérone sérique chez des pigeons (Columba livia Gmelin, 1789) au nid. Les patrons de croissance sont semblables durant la première semaine de vie; les petits du HQD croissent ensuite plus vite que les petits du LQD. Bien qu’il n’y ait pas de différence de concentrations de corticostérone et de thiols sériques, les dommages oxydatifs sériques augmentent plus rapidement durant la période de nidification chez les poussins du HQD que chez les poussins du LQD. La capacité antioxydante du sérum demeure constante dans le temps chez les poussins du LQD au nid, mais elle augmente chez les poussins du HQD. Notre étude apporte des données qui montrent que des taux de croissance différents (induits en l’absence de tout stress physiologique ou privation antérieure de nourriture) sont associés à des statuts oxydatifs sériques différents.

Document Type: Research Article

Publication date: August 1, 2010

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  • Published since 1929, this monthly journal reports on primary research contributed by respected international scientists in the broad field of zoology, including behaviour, biochemistry and physiology, developmental biology, ecology, genetics, morphology and ultrastructure, parasitology and pathology, and systematics and evolution. It also invites experts to submit review articles on topics of current interest.
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