Pigmentantes de gema: novo método de avaliação de cor e caracterização da produtividade e saúde das poedeiras
Carregando...
Data
2013-08-01
Autores
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Federal de Goiás
Resumo
Aimed at feeding laying hen, corn has been substituted by other cheaper food. However, since these foods have little capacity to stain egg yolk, pigments are usually added to the animal’s feed. Synthetic carotenoids, such as canthaxanthin, and the natural pigments present in bran annatto are among the most used food coloring. However, little is known about the impact of those pigments to the animal’s health, and it is important to point out that the choice of the dye and its dose are based solely on the eggs color. In the present study we aimed at evaluating if the pigments have some beneficial or toxic effects on the laying hen health, and test a new simple, fast and non subjective computerized method to analyze the egg color. Thus, laying hens of the ISA Brown lineage were fed with three different sorghum meal: without dye; with bran annatto (3%); or with cathaxanthin (8 ppm) + apocaroten (25 ppm). Animal performance, eggs quality, the liver and kidney functions, as well as the oxidative stress inferred from the levels of malondialdehyde in red blood cells were determined. None of the treatments altered the laying hen performance, the liver and kidney integrity and functions, and the oxidative stress. However, all the dyes tested increased yolks egg weight and color. Finally, the results clearly suggest that yolks color intensity was more accurately determined by the computerized method when compared to the traditional colorimetric fan assay.
Descrição
Palavras-chave
Nutrição , Aditivos , Carotenoides , Corantes , Gema , Nutrition , Additives , Carotenoids , Dye , Yolk
Citação
CARNEIRO, Jussara de Souza. Pigmentantes de gema: novo método de avaliação de cor e caracterização da produtividade e saúde das poedeiras. 2013. 107 f. Tese (Doutorado em Ciência Animal) Universidade Federal de Goiás, Goiânia, 2013.