Feedlot performance, carcass characteristics and meat quality of Nellore and Canchim bulls fed diets supplemented with vitamins D and E/Desempenho, caracteristicas de carcaca e carne de bovinos Nelore e Canchim, confinados com dietas suplementadas com vitaminas D e E
This experiment was conducted at Unesp feedlot facility, campus of Botucatu, and aimed to evaluate the supplementation of D and E vitamins on animal performance, carcass characteristics and meat quality of yearling bulls finished in feedlot. Thirty-six 7-mo-old yearling bulls, 18 Nellore (NEL) and 1...
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Published in | Acta scientiarum. Animal sciences Vol. 35; no. 4; p. 403 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | Spanish |
Published |
Universidade Estadual de Maringa
01.10.2013
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Subjects | |
Online Access | Get full text |
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Summary: | This experiment was conducted at Unesp feedlot facility, campus of Botucatu, and aimed to evaluate the supplementation of D and E vitamins on animal performance, carcass characteristics and meat quality of yearling bulls finished in feedlot. Thirty-six 7-mo-old yearling bulls, 18 Nellore (NEL) and 18 Canchim (CAC), with average initial body weight of 234.53 [+ or -] 22.15 and 248.13 [+ or -] 34.67 kg, respectively, were fed for 126 days. Nine NEL and nine CAC yearling bulls were daily supplemented with 1300 IU of vitamin E and 7.5 x [10.sub.6] IU of vitamin [D.sub.3] for 67 days and 10 days before slaughter, respectively. One day before slaughter, blood samples were collected for evaluation of Ca concentration. After chilling, Longissimus muscle (LM) samples were collected for analysis of shear force, myofibrillar fragmentation index, total lipids, D and E vitamins concentrations, and meat shelf life. An increased level of plasma Ca (p < 0.01) was observed due to vitamin supplementation, showing the action of vitamin D on the animal organism. However, there was no effect (p > 0.05) of vitamins D and E on feedlot performance, carcass characteristics and meat quality. Keywords: calcium, color, pH, tenderness. O experimento foi conduzido no setor de confinamento da Unesp, campus de Botucatu, com o objetivo de avaliar a influencia da suplementacao das vitaminas D e E sobre o desempenho animal, caracteristicas de carcaca e qualidade de carne de bovinos jovens confinados. Foram utilizados 36 machos inteiros, 18 Nelore (NEL) e 18 Canchim (CAC), de sete meses de idade com peso vivo inicial medio de 234,53 [+ or -] 22,15 e 248,13 [+ or -] 34,67 kg, respectivamente, os quais foram confinados por 126 dias. Nove animais NEL e nove CAC foram suplementados diariamente com 1300 UI de vitamina E e 7,5 x [10.sup.6] UI de vitamina [D.sub.3] durante 67 e dez dias antes do abate, respectivamente. Um dia antes do abate foram coletadas amostras de sangue para avaliacao do calcio plasmatico. Na desossa, foram colhidas amostras do musculo Longissimus (LM) para analises como forca de cisalhamento, indice de fragmentacao miofibrilar, lipideos totais, concentracao de vitaminas D e E e tempo de prateleira. Foi observado aumento (p < 0,01) do nivel de calcio plasmatico pela suplementacao, o que indica atuacao da vitamina D no organismo animal. No entanto, nao houve efeito (p > 0,05) da suplementacao de vitaminas De E sobre o desempenho, caracteristicas de carcaca e qualidade da carne. Palavras-chave: calcio, cor, pH, maciez. |
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ISSN: | 1806-2636 1807-8672 |
DOI: | 10.4025/actascianimsci.v35i4.18801 |