Journal: | Revista brasileira de ciencia avicola |
Database: | PERIÓDICA |
System number: | 000279313 |
ISSN: | 1516-635X |
Authors: | Garcia, Edivaldo Antonio1 Mendes, Ariel Antonio Moreira, Joerley Mori, C Pavan, Ana Claudia Pizzolante, Carla Cachoni2 Saldanha, E.S.P.B |
Institutions: | 1Universidade Estadual Paulista "Julio de Mesquita Filho", Faculdade de Medicina Veterinaria e Zootecnia, Botucatu, Sao Paulo. Brasil 2Agencia Paulista de Tecnologia dos Agronegocios, Campinas, Sao Paulo. Brasil |
Year: | 2005 |
Season: | Ene-Mar |
Volumen: | 7 |
Number: | 1 |
Pages: | 11-18 |
Country: | Brasil |
Language: | Inglés |
Document type: | Nota breve o noticia |
Approach: | Experimental |
English abstract | An experiment was conducted at Faculdade de Medicina Veterinária e Zootecnia/Unesp - Botucatu for 168 days to evaluate the effects of protein, Met + Cys and lysine diet levels on egg production and egg quality of laying Japanese quails. Quails with 42 days of age were reared in a completely randomized design. There were 1,944 quails distributed in four replicates of 27 birds per pen, according to a factorial 3x3x2 with three crude protein levels (16, 18 and 20% CP), three Met + Cys levels (0.700; 0.875 and 1.050%) and two lysine levels (1.100 and 1.375%). Birds fed diets with 18 and 20% CP had higher feed intake and egg production than those fed diets with 16% CP. There was significant interaction (p<0.05) between protein and Met + Cys levels on egg weight. There was no effects (p>0.05) of the protein level on feed conversion per dozen eggs; however, improved feed conversion per egg mass was seen for birds fed diets with 20% CP compared to those fed diets with 16% and 18% CP. Protein and lipid percentage in the yolk increased when dietary protein level increased from 16 to 18%. Increasing Met + Cys from 0.700% to 0.875% reduced yolk protein percentage. Higher lipid percentage in the yolk was seen in eggs from quails fed diets with 1.050% Met + Cys, whereas 1.375% lysine in the diet of resulted in decreased egg production and egg mass, besides poorer feed conversion per dozen eggs and per egg mass |
Disciplines: | Medicina veterinaria y zootecnia |
Keyword: | Aves de corral, Zootecnia, Codorniz japonesa, Dietas, Suplementación, Proteínas, Lisina, Calidad, Rendimiento, Huevos |
Keyword: | Veterinary medicine and animal husbandry, Animal husbandry, Poultry, Japanese quails, Diets, Supplementation, Proteins, Lysine, Quality, Yield, Eggs |
Full text: | Texto completo (Ver HTML) |