SciELO - Scientific Electronic Library Online

 
vol.4 número3Adaptação de linhagens de galinhas para corte ao sistema de criação semi-intensivoUtilização de diferentes níveis de suplementação de sódio para poedeiras comerciais no segundo ciclo de produção índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


Brazilian Journal of Poultry Science

versão impressa ISSN 1516-635Xversão On-line ISSN 1806-9061

Resumo

NAKAGE, ES et al. Effect of the physical form of diet on the eggshell porosity and thickness, water loss and hatchability of partridge (Rhynchotus rufescens) eggs. Rev. Bras. Cienc. Avic. [online]. 2002, vol.4, n.3, pp.227-234. ISSN 1516-635X.  http://dx.doi.org/10.1590/S1516-635X2002000300007.

The aim of this study was to determine the effect of the ingestion of meal and pelleted diets on eggshell porosity and thickness, water loss and hatchability percentages of partridge (Rhynchotus rufescens) eggs. The eggs (n=100) were divided into five different weight classes (1: 35-45 g, 2: 46-50 g, 3: 51-55 g, 4: 56-60 g, 5: 61-70 g). Parts from different regions (air space, equator and small end) of each eggshell were analized in order to count pore numbers. Eggshell thickness measurements were carried out after removal of the egg membranes. The eggs used in the analyses of the water loss and hatchability percentages were weighed, desinfected, and then incubated (T=35.5ºC and RH=70%). On the 16th day of incubation, these eggs were transferred to a hatchery maintained at temperature and RH similar to those used in the incubator, where they were kept until hatching. The results showed that the mean number of eggshell pores changed among the three regions of the eggshell and egg weight classes, and also between the physical form of diets. Ingestion of pelleted diet increased eggshell thickness; however, hatchability and water loss percentages remained unchanged.

Palavras-chave : diets; eggshell; hatchability; physical form; porosity; thickness; water loss.

        · 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