Production performance and egg quality of quails (Coturnix japonica) during several periods of the day
AUTOR(ES)
Pizzolante, CC, Faltarone, ABG, Garcia, EA, Saldanha, ESPB, Deodato, AP, Sherer, MR, Mendes, AA, Mori, C, Pelicia, K
FONTE
Revista Brasileira de Ciência Avícola
DATA DE PUBLICAÇÃO
2006-09
RESUMO
Three experiments were carried out to analyze the performance and egg quality of Japanese quails throughout the day when submitted to different lighting programs. In each experiment, birds were submitted to a period of 28 days for adaptation to the lighting program. During the following three days, each day - from 7 am to 7 pm or 9 pm - was divided into six or seven periods of two hours each, and the remaining hours corresponded to another single period. All birds were submitted to the same management practices, and received water and feed ad libitum. The experimental diet was formulated according to NRC (1994) standards. It was observed lower feed intake in the period of 9 pm to 7 am, and a higher incidence of lay from 3 pm to 7 pm, as opposite to hens, which peak of egg laying occurs during the morning. Some controversial results were found among experiments as to eggshell quality during the different periods of the day. Variation on the lighting program had little influence on the other performance and egg quality parameters.
Documentos Relacionados
- Beak trimming methods and their effect on the performance and egg quality of Japanese quails (Coturnix japonica) during lay
- Forced-Molting methods and their effects on the performance and egg quality of japanese quails (Coturnix japonica) in the second laying cycle
- NÃveis de cloro para codornas japonesas (Coturnix coturnix japonica) nas fases de crescimento e produÃÃo
- Protein requirement of Japanese quail (Coturnix coturnix japonica) during rearing and laying periods
- Preparation of biological fish silage and its effect on the performance and meat quality characteristics of quails (Coturnix coturnix japonica)