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Urea and salt as supplementary diet for crossbreed milk cows/Ureia e sal mineral em suplementos para vacas mesticas leiteiras

This study aimed to evaluate the use of supplementary feed with different percentages of urea and mineral salt for crossbred milk cows. Ten animals were used, mean body weight 480 kg [+ or -] 9,7, distributed in a 5 x 5 double Latin square, with treatments of supplements with different urea and mine...

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Bibliographic Details
Published in:Acta scientiarum. Animal sciences 2015-07, Vol.37 (3), p.281
Main Authors: Teixeira, Cesar Roberto Viana, de Paula Lana, Rogerio, Renno, Luciana Navajas, Veloso, Cristina Mattos, Carvalho, Juliana do Carmo, de Menezes, Andre Azevedo
Format: Article
Language:Spanish
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Summary:This study aimed to evaluate the use of supplementary feed with different percentages of urea and mineral salt for crossbred milk cows. Ten animals were used, mean body weight 480 kg [+ or -] 9,7, distributed in a 5 x 5 double Latin square, with treatments of supplements with different urea and mineral salt percentages, namely, 10:10; 10:20; 20:10 and 20:20, completed to 100% with corn meal. Data underwent statistical analysis by SAS at 0.05 significance level. The use of supplements increased (p < 0.05) the total dry matter (DM) intake of diet. The increase in the level of urea in the supplement decreased DM intake of supplement. The use of supplements increased (p < 0.05) DM digestibility. The treatments with presence of supplement showed higher (p < 0.05) milk production. Supplemented diets may be used to correct nutritional deficiencies of sugar cane, with higher intake, digestibility and milk production. Treatments with 20% urea in the composition of the supplement caused a lower DM consumption with the same performance in the animals. The above-mentioned treatments had the best efficiency. Keywords: cattle nutrition, supplementation, milk production. Esse estudo teve como objetivo avaliar o uso de suplementos, com diferentes proporgoes de ureia e sal mineral, na alimentagao de vacas mestigas leiteiras. Foram utilizados dez animais, com peso corporal medio de 480 kg [+ or -] 9,7, distribuidas em dois quadrados latinos 5 x 5, com tratamentos de suplementos com diferentes porcentagens de ureia e sal mineral, sendo: 10:10; 10:20; 20:10, 20:20 e 0:100, completados para 100% com fuba de milho. Os dados foram analisados utilizando-se o programa SAS, adotando-se um nivel de significancia de 0,05. O uso de suplemento aumentou (p < 0,05) o consumo de materia seca (MS) total da dieta. O aumento do teor de ureia no suplemento diminuiu o consumo de MS de suplemento. O uso de suplemento aumentou (p < 0,05) a digestibilidade da MS. Os tratamentos com presenga de suplemento proporcionaram maior (p < 0,05) produgao de leite. Os suplementos podem ser usados para corrigir deficiencias nutricionais, resultando em maior consumo, digestibilidade e produgao de leite. Os suplementos com 20% de ureia em sua composigao resultaram em menor consumo com mesmo desempenho dos animais, podendo-se concluir que esses tratamentos apresentaram melhor eficiencia de utilizagao. Palavras-chave: nutrigao de bovinos, suplementagao, produgao de leite.
ISSN:1806-2636
DOI:10.4025/actascianimsci.v37i3.26890