Performance of Layers Submitted to Different Forced Molting Methods and Different Temperatures


Autoria(s): Sgavioli, S.; Filardi, R. da S.; Praes, M. F. F. M.; Assuena,; Pileggi, J.; Andrade, P. de C.; Boleli, I. C.; Junqueira, Otto Mack
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

20/05/2014

20/05/2014

01/07/2011

Resumo

This study was carried out to evaluate the performance and egg quality of laying hens, in their second laying cycle submitted to different forced-molting methods and three environmental temperatures. Six hundred layers were distributed in a completely randomized experimental design with 15 treatments with five replicates of eight birds each, according to 5x3 factorial arrangement (molting methods vs. temperatures). The following forced-molting methods were applied: 90%, 70%, 50% dietary alfalfa inclusion, addition of 2,800 ppm zinc, and feed fasting. Temperatures were: 20 degrees C, 27 degrees C and 35 degrees C. At the end of each period of the second laying cycle, bird performance and egg quality were evaluated. Data were submitted to analysis of variance and means were compared by orthogonal and polynomial contrasts. The highest alfalfa inclusion level (90% alfalfa and 10% basal diet) proved to be efficient as compared to the other methods, independently of temperature.

Formato

207-210

Identificador

http://www.scielo.br/scielo.php?pid=S1516-635X2011000300008&script=sci_arttext

Brazilian Journal of Poultry Science. Campinas: Facta-fundacio Arnco Ciência Tecnologia Avicolas, v. 13, n. 3, p. 207-210, 2011.

1516-635X

http://hdl.handle.net/11449/41169

S1516-635X2011000300008

WOS:000297239400008

S1516-635X2011000300008-en.pdf

Idioma(s)

eng

Publicador

Facta-fundacio Arnco Ciência Tecnologia Avicolas

Relação

Brazilian Journal of Poultry Science

Direitos

openAccess

Palavras-Chave #Egg quality #Heat stress #Performance #Welfare
Tipo

info:eu-repo/semantics/article