Production performance and egg quality of quails (Coturnix japonica) during several periods of the day



Document title: Production performance and egg quality of quails (Coturnix japonica) during several periods of the day
Journal: Revista brasileira de ciencia avicola
Database: PERIÓDICA
System number: 000279346
ISSN: 1516-635X
Authors: 1







Institutions: 1Universidade Estadual Paulista "Julio de Mesquita Filho", Faculdade de Medicina Veterinaria e Zootecnia, Botucatu, Sao Paulo. Brasil
Year:
Season: Jul-Sep
Volumen: 8
Number: 3
Pages: 149-152
Country: Brasil
Language: Inglés
Document type: Nota breve o noticia
Approach: Experimental
English abstract 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
Disciplines: Medicina veterinaria y zootecnia
Keyword: Aves de corral,
Zootecnia,
Codorniz japonesa,
Iluminación,
Fisiología animal,
Calidad,
Rendimiento,
Huevos
Keyword: Veterinary medicine and animal husbandry,
Animal husbandry,
Poultry,
Japanese quails,
Illumination,
Animal physiology,
Quality,
Yield,
Eggs
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