níveis vitamínicos para frangos de corte vitamin levels for broiler
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Abstract
Vitamins are micronutrients that participe in many metabolic processes of the organism, being essential to animal health and performance. There has been little research conducted over the last years on estimating the best vitamin levels for broilers, having great variation on comercial levels. The objective of this study was to present the actual concepts of the evaluation of vitamin requirements for broiler and the levels recomendated by industry and research centers. The major levels recomendated by NRC (1994) were based on former studies, with controled conditions and considering minimal levels to avoid deficiency signs, not evaluating the best performance on the challenge conditions found in field. Furthermore, modern strains presents greater growth rate and production, resulting in higher nutritional requirements to express their genetical potential. Nowadays, besides zootecnical parameters, it had been evaluating other parameters to determine vitamin requirements, as imunity, well being and carcass characteristics. Comercial vitamin levels used are generally superior than the suggested by NRC (1994), and the liposolubles levels may be higher than 25 times the recomendations and hydrosolubles five times higher. The use of higher vitamin levels in brolier diet results in greater productive performance and meat quality.
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flix2009cincianveis
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| Authors | ;Ananda Portella Félix;Alex Maiorka;José Otávio Berti Sorbara |
| Journal | Trials |
| Year | 2009 |
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