| Revista: | Revista brasileira de ciencia avicola |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000279356 |
| ISSN: | 1516-635X |
| Autors: | Pizzolante, Carla Cachoni1 Lagana, Christine Saldanha, E.S.P.B Deodato, A.P Garcia, Edivaldo Antonio2 Faitarone, Ana Beatriz Garcia Scherer, Miriani Rosa Batista, L |
| Institucions: | 1Agencia Paulista de Tecnologia dos Agronegocios, Campinas, Sao Paulo. Brasil 2Universidade Estadual Paulista "Julio de Mesquita Filho", Faculdade de Medicina Veterinaria e Zootecnia, Botucatu, Sao Paulo. Brasil |
| Any: | 2006 |
| Període: | Jul-Sep |
| Volum: | 8 |
| Número: | 3 |
| Paginació: | 173-176 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Nota breve o noticia |
| Enfoque: | Experimental |
| Resumen en inglés | An experiment was carried out at the Research and Development Unit of Brotas aiming at evaluating dietary calcium level and limestone particle size on the production performance of commercial (Hy-Line Brown) layers in the second lay cycle. Experiment duration was 112 days. A total number of 288 hens, with 83 weeks of age in the beginning of the experiment, were used in a completely randomized experimental design in a factorial arrangement of 2x3, with two calcium levels (3.5 and 4.0%) and three limestone particle size compositions: 100% fine limestone (FL), 30% coarse limestone (CL) + 70% fine limestone (FL), and 50% (CL) + 50% (FL), with six replicates of eight birds each. Egg weight (g), egg production (%), egg mass (%), feed intake (g), feed conversion ratio (kg/dz and kg/kg), mortality (%), and egg loss (%) were evaluated. The analysis of variance did not detect significant differences (p>0.05) among treatments on any of the evaluated performance parameters. It was concluded that the tested calcium levels and limestone particle composition did not influence the performance of semi-heavy layers in second production cycle |
| Disciplines | Medicina veterinaria y zootecnia |
| Paraules clau: | Aves de corral, Nutrición animal, Zootecnia, Gallinas ponedoras, Calcio, Tamaño, Rendimiento, Huevos |
| Keyword: | Veterinary medicine and animal husbandry, Animal husbandry, Animal nutrition, Poultry, Laying hens, Calcium, Size, Yield, Eggs |
| Text complet: | Texto completo (Ver HTML) |
