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Open Access Adição de probiótico ao leite integral ou sucedâneo e desempenho de bezerros da raça holandesa Addition of probiotic to whole milk or milk replacer and holstein calves performance

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A possibilidade de proibição do uso de antibióticos como promotores de crescimento para animais de produção tem feito com que consumidores e produtores procurem por alternativas. Os probióticos têm se mostrado promissores em cumprir este papel e por esta razão, setenta e nove bezerros da raça Holandesa foram utilizados para avaliar a adição de probiótico constituído por Lactobacillus acidophilus, Enterococcus faecium e Saccharomyces cerevisiae ao aleitamento. Os animais foram distribuídos em um delineamento inteiramente casualizado, com arranjo fatorial de tratamentos 3x2, correspondendo ao tipo de dieta líquida (leite integral, sucedâneo ao 3° dia ou sucedâneo ao 15° dia de idade, com adição ou não de probiótico). O período experimental foi do nascimento até 15 dias após a desmama. O fornecimento de probiótico a bezerros(as) aleitados(as) com sucedâneo a partir dos 3 dias de idade melhorou o ganho de peso (com probiótico&61;0,22 vs. sem probiótico&61;0,16 kg dia-1) e conversão alimentar (2,62 vs. 3,85) até a desmama, e conversão alimentar (1,66 vs. 2,03) pós-desmama. Os bezerros aleitados com sucedâneo consumiram mais concentrado em relação aos que receberam leite integral (sucedâneo&61;0,22 vs. leite&61;0,19 kg dia-1), mas consumiram menos matéria seca total (0,61 vs. 0,67 kg dia-1) e apresentaram menor peso à desmama (49 vs. 59 kg). Quando o uso de sucedâneo foi iniciado aos 3 dias, os bezerros apresentaram maior consumo de concentrado (sucedâneo aos 3 dias&61;0,25 vs. sucedâneo aos 15 dias&61;0,20 kg dia-1) e menor peso à desmama (47,3 vs. 51 kg) em relação aos bezerros aleitados com sucedâneo aos 15 dias.&60;br&62;The possibility of limiting antibiotics as growth stimulants for farm animals has produced a climate in which both consumers and manufacturers are looking for alternatives. Probiotics are being considered to exercise this role, and for this reason, 79 newborn Holstein calves were used to evaluate the effects of Lactobacillus acidophilus, Enterococcus faecium and Saccharomyces cerevisiae additions to whole milk or milk replacer. Calves were assigned at birth to a completely randomized design with a 3x2 factorial arrangement of treatments. Factors were&58; 1- whole milk&58; milk replacer at 3 days of age&58; milk replacer at 15 days of age&59; 2- probiotic supplementation or not. Animals remained on the trial until 15 days after weaning. Probiotic supplementation to calves fed milk replacer at 3 days of age improved preweaning daily body gain (with probiotic&61;0.22 vs. without probiotic&61;0.16 kg day-1) and feed conversion (2.62 vs. 3.85), as well as, postweaning feed conversion (1.66 vs. 2.03). Milk replacer fed calves had higher starter intake (milk replacer&61;0.22 vs. whole milk&61;0.19 kg day-1), but lower dry matter intake (0.61 vs. 0.67 kg day-1) and the lowest weight at weaning (49 vs. 59 kg). When milk replacer was started at 3 days, calves had higher starter intake (milk replacer at 3 days&61;0.25 vs. milk replacer at 15 days&61;0.20 kg day-1) and lower weight at weaning (47.3 vs. 51 kg) in relation to milk replacer starting at 15 days. Age at weaning and mortality rate were not affected by the probiotic supplementation or liquid diet.
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Document Type: Research Article

Publication date: January 1, 2001

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