desempenho de bezerros alimentados com dietas líquidas à base de leite integral ou soro de leite performance of calves fed on liquid diets based on whole milk and whey

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ID: 222828
2006
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Abstract
Quinze bezerros da raça Holandesa, desaleitados aos 30 dias de idade, foram utilizados para avaliar os efeitos da inclusão de fontes protéicas alternativas, em substituição às proteínas do leite integral, na formulação de sucedâneos do leite. Os animais foram divididos em três grupos: o grupo controle (C) - recebeu leite em pó integral reconstituído; o grupo sucedâneo SL (soro/leite) recebeu 41,6% da proteína bruta (PB) vinda do concentrado protéico de soro (CPS), 23,1% do soro de leite e 35,3% do leite em pó integral; e o grupo sucedâneo S (soro) recebeu 68% da PB vinda do CPS e 32% do soro de leite. O consumo de concentrado, feno, sal mineral e água foi mensurado diariamente, enquanto o ganho de peso foi avaliado semanalmente. Não houve diferença (P>0,05) para o consumo de concentrado, sal mineral e água entre os grupos, nos períodos avaliados. O consumo de feno e o ganho de peso foram inferiores nos animais do grupo S (P<0,05). A substituição de 100% do leite integral por CPS e soro de leite influenciou negativamente o desempenho.
The effects of alternative protein sources replacing whole milk proteins in milk replacer formulation were evaluated. Fifteen Holstein calves, weaned at 30 days of age, were used to evaluate the intake of concentrate, hay, mineral salt and water, and live weight gain. Animals were divided in three experimental groups: control group (C) - fed whole milk; milk replacer WM group (whey/milk) - fed on 41.6% of crude protein (CP) provided by whey protein concentrate (WPC), 23.1% by whey and 35.3% by whole milk; and milk replacer W group (whey) - fed on 68% of CP provided by WPC and 32% by whey. Starter, hay, mineral and water intakes were daily measured, whereas live weight was weekly recorded. Starter, mineral and water intakes were not different (P>0.05) among the experimental groups. Hay intake and live weight gain were lower (P<0.05) for S group animals. Total replacement of whole milk proteins with whey proteins negatively affected the performance of the calves.
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fontes2006arquivodesempenho Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;F.A.P.V. Fontes;S.G. Coelho;A.M.Q. Lana;T.C. Costa;A.U. Carvalho;M.I.C. Ferreira;H.M. Saturnino;R.B. Reis;A.L. Serrano
Journal Environmental research
Year 2006
DOI
10.1590/S0102-09352006000200010
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352006000200010
Keywords
calf whey performanceanimal culture

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