SciELO - Scientific Electronic Library Online

 
vol.18 número11Emissão de amônia de galpões de frangos de corte com ventilação natural e mecânica no BrasilPotencialidade dos extratos tânicos de três espécies florestais no curtimento de peles caprinas índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


Revista Brasileira de Engenharia Agrícola e Ambiental

versão On-line ISSN 1807-1929

Resumo

OLIVEIRA, Daniele L. de et al. Performance and quality of egg laying hens raised in furnished cages and controlled environment. Rev. bras. eng. agríc. ambient. [online]. 2014, vol.18, n.11, pp.1186-1191. ISSN 1807-1929.  https://doi.org/10.1590/1807-1929/agriambi.v18n11p1186-1191.

The objective of this study was to evaluate the performance and egg quality of laying hens raised in furnished cages and controlled environment, housed in a climate chamber under three temperatures: 20, 26 and 32 oC and relative humidity of 60%. The cages had drinkers, feeders, nests and an area with sand and sandpaper. Thirty six Dekalb White lineage hens were used with 27 weeks of age with six animals per cage. The consumption of food and water, production and egg quality were analysed. The experimental design was in completely randomized design with three treatments and six replications. In ambient conditions of 20 and 26 oC, birds were within the ZTC (Thermal Confort Zone), with no significant difference, with positive effect on egg quality with best values ​​in mean quality parameters. In ET (Environmental Temperature) of 32 oC, considered out of ZTC, the birds showed evidence of heat stress, providing increased water intake, reduced feed intake, values ​​of percentage of production and egg quality parameters. Enriched cages were adequate to laying hens, showing egg production with good shell strength.

Palavras-chave : laying hens; welfare; climate chamber.

        · resumo em Português     · texto em Português     · Português ( pdf )

 

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons