Glutamina na dieta de poedeiras leves submetidas ao estresse pelo calor e à termoneutralidade

Kelen Cristiane Zavarize; José Roberto Sartori; Antonio Celso Pezzato; Edvaldo Antonio Garcia; Valquíria Cação Cruz

doi:10.5216/cab.v12i3.2535

GLUTAMINE IN DIET OF LAYING HENS SUBMITTED TO HEAT STRESS AND THERMONEUTRALITY

Authors

Kelen Cristiane Zavarize Universidade Estadual Paulista (UNESP), Botucatu, São Paulo, Brasil
José Roberto Sartori Universidade Estadual Paulista (UNESP), Botucatu, São Paulo, Brasil
Antonio Celso Pezzato Universidade Estadual Paulista (UNESP), Botucatu, São Paulo, Brasil
Edvaldo Antonio Garcia Universidade Estadual Paulista (UNESP), Botucatu, São Paulo, Brasil
Valquíria Cação Cruz Universidade Estadual Paulista (UNESP), Botucatu, São Paulo, Brasil

DOI:

https://doi.org/10.5216/cab.v12i3.2535

Keywords:

Poultry enviroment

Abstract

The aim of this study was to evaluate the effect of glutamine supplementation of the diet on intestinal mucosa morphology, performance, and egg quality of commercial laying hens, submitted to heat stress and thermoneutral conditions. In this study, 96 (Isa Babcock) laying hens at 35 weeks of age were used and distributed in a completely randomized design according to a 2x2 factorial arrangement, with two levels of ambient temperature (thermoneutral and hot) and two levels of glutamine in the diet (0.0 and 1.0% of inclusion), in 6 replicates of 4 hens per box. Feed intake, daily egg production, feed conversion per kilogram of eggs, and egg quality were obtained in two periods of 28 days each. Heat stress decreased egg production and quality, and glutamine supplementation improved egg quality and feed conversion. The heat and glutamine supplementation provided an increase in calliciform cells quantity in duodenum and ileum, respectively. Significant morphological modifications in the intestinal mucosa of laying hens were not found.
KEYWORDS: egg quality; glutamine; intestinal morphology; thermal stress.

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Published

2011-09-29

How to Cite

ZAVARIZE, Kelen Cristiane; SARTORI, José Roberto; PEZZATO, Antonio Celso; GARCIA, Edvaldo Antonio; CRUZ, Valquíria Cação. GLUTAMINE IN DIET OF LAYING HENS SUBMITTED TO HEAT STRESS AND THERMONEUTRALITY. Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 12, n. 3, p. 400–406, 2011. DOI: 10.5216/cab.v12i3.2535. Disponível em: https://revistas.ufg.br/vet/article/view/2535. Acesso em: 30 dec. 2025.

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Issue

Vol. 12 No. 3 (2011)

Section

Animal Production

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