Revue: | Revista Brasileira de Zootecnia |
Base de datos: | PERIÓDICA |
Número de sistema: | 000445581 |
ISSN: | 1516-3598 |
Autores: | Gholami, Majid1 Chamani, Mohammad1 Seidavi, Alireza2 Sadeghi, Ali Asghar1 Aminafschar, Mehdi1 |
Instituciones: | 1Islamic Azad University, Science and Research Branch, Teherán. Irán 2Islamic Azad University, Rasht Branch, Rasht, Guilán. Irán |
Año: | 2020 |
Volumen: | 49 |
País: | Brasil |
Idioma: | Inglés |
Tipo de documento: | Artículo |
Enfoque: | Analítico, descriptivo |
Resumen en inglés | This experiment was conducted to evaluate the effects of stocking density and climate region on performance, immunity, carcass characteristics, blood plasma, and economic parameters of the Ross strain of broiler chickens. The effects of four climates (mild and humid, semi-arid, alpine, and hot and dry) and four densities (10, 15, 17, and 20 chicks/m2) were studied as a completely randomized design with 4×4 factorial arrangement of treatments. The results showed that the density had a significant effect on feed intake and feed conversion ratio in the starter period and on body weight gain in the grower and the whole periods of the experiment. Moreover, both climate and density had a significant impact on economic performance (live weight, survival rate, production index, meat production/m2, and profitability). The mild and humid climate and the density of 17 chicks/m2 had the most economic benefit compared with other treatments. The climate type had a significant effect on the relative weights of the breast, wings, neck, proventriculus, and ileum. The effects of climate and density on glucose, triglyceride, very low-density lipoproteins (VLDL), high-density lipoproteins (HDL), LDL/low-density lipoproteins (HDL), total protein and globulin were significant. In addition, the effect of climate on the antibody titer against sheep red blood cells (except for immunoglobulin G on day 28) was significant |
Disciplinas: | Medicina veterinaria y zootecnia |
Palabras clave: | Aves de corral, Zootecnia, Densidad de población, Clima, Inmunología, Calidad de la canal, Parámetros sanguíneos, Costos, Irán |
Keyword: | Poultry, Animal husbandry, Stocking density, Climate, Immunology, Carcass quality, Blood parameters, Costs, Iran |
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