| Revista: | Revista brasileira de ciencia avicola |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000279260 |
| ISSN: | 1516-635X |
| Autores: | Fassani, Edison Jose1 Bertechini, Antonio Gilberto2 Brito, Jeronimo Avito Goncalves de Kato, Reinaldo Kanji Fialho, Elias Tadeu Geraldo, Adriano |
| Instituciones: | 1Universidade Jose do Rosario Vellano, Faculdade de Ciencias Agrarias, Lavras, Minas Gerais. Brasil 2Universidade Federal de Lavras, Departamento de Zootecnia, Lavras, Minas Gerais. Brasil |
| Año: | 2004 |
| Periodo: | Oct-Dic |
| Volumen: | 6 |
| Número: | 4 |
| Paginación: | 213-217 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Nota breve o noticia |
| Enfoque: | Experimental |
| Resumen en inglés | Boron supplementation in broiler feed is not a routine practice. However, some reports suggest a positive effect of boron on performance. This study assessed the effects of boron supplementation on broiler performance. Diets were based on maize and soybean meal, using boric acid P.A. as boron source. Six supplementation levels (0, 30, 60, 90, 120 and 150 ppm) were evaluated using 1,440 one-day old males housed at a density of 30 chickens in each of 48 experimental plots of 3m2. A completely randomized block design was used with 8 replicates. Feed intake, weight gain and feed conversion were assessed in the periods from 1 to 7 days, 1 to 21 days and 1 to 42 days of age, and viability was evaluated for the total 42-day rearing period. No performance variable was affected by boron supplementation (p>0.05) in the period from 1 to 7 days. The regression analysis indicated an ideal level of 37.4 ppm of boron for weight gain from 1 to 21 days (p<0.05) without affecting feed conversion (p>0.05), although feed intake was reduced linearly with increased boron levels (p<0.05). In the total rearing period (1 to 42 days), the level of 57 ppm boron was adequate for weight gain (p<0.01) without affecting feed conversion (p>0.05). Ash and calcium percentages in the tibias of broilers and viability in the total rearing period were not affected by boron supplementation (p>0.05) |
| Disciplinas: | Medicina veterinaria y zootecnia |
| Palabras clave: | Aves de corral, Nutrición animal, Pollos de engorda, Suplementación, Boro, Ganancia de peso, Rendimiento |
| Keyword: | Veterinary medicine and animal husbandry, Animal nutrition, Poultry, Broilers, Supplementation, Boron, Weight gain, Yield |
| Texto completo: | Texto completo (Ver HTML) |
