Substituição da monensina e da virginiamicina por óleos essenciais e ácidos graxos de cadeia curta em bovinos de corte confinados com dieta de puro grão: desempenho, consumo de matéria seca e parâmetros ruminais

Autores

DOI:

https://doi.org/10.33448/rsd-v12i10.43502

Palavras-chave:

Aditivos naturais; Eficiência energética; Extratos vegetais; Sustentabilidade.

Resumo

Objetivou-se com este trabalho avaliar a substituição da monensina e virginiamicina por óleos essenciais e ácidos graxos de cadeia curta sobre o desempenho, consumo de matéria seca e parâmetros ruminais em bovinos de corte alimentados com dietas de puro grão. Foram utilizados 36 bovinos machos inteiros com idade média de 6 ± 2 meses de idade com 257,2 ± 17,2 kg de peso vivo médio inicial divididos em 2 tratamentos sendo eles: dieta com virginiamicina e monensina e dieta com óleos essenciais e ácidos graxos de cadeia curta. Os animais foram adaptados às dietas de puro grão na proporção de 85% de milho grão inteiro e 15% de núcleo proteico mineral durante 14 dias e permaneceram 98 dias em período experimental. Foram realizadas avaliações de desempenho, consumo de matéria seca em % do peso vivo, conversão alimentar, pH das fezes, pH ruminal e quantidade de ácidos graxos voláteis no rúmen. O estudo foi realizado em um delineamento inteiramente casualizado. Foi observado diferença no ganho médio diário (P<0,01) no período experimental. Para as variáveis de consumo de matéria seca em % do peso vivo e conversão alimentar não foram encontradas diferenças significativas (P>0,05). Em relação a quantidade de ácidos graxos voláteis, só foram encontradas diferenças (P<0,01) para a produção de ácido acético. Com exceção do período das 22:00 horas, todos os períodos avaliados (06:00; 14:00 e geral) apresentaram diferença significativa (P<0,01) para pH ruminal. Concluiu-se que a substituição de monensina e virginiamicina por óleos essências e ácidos graxos de cadeia curta em bovinos de corte alimentados com dietas de puro grão mostrou-se efetiva para o desempenho sem prejuízo para os parâmetros ruminais, que pudesse a vir comprometer a saúde animal.

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Publicado

17/10/2023

Como Citar

LOPES, L. S. .; JUNQUEIRA, F. S. .; ARAÚJO, F. F. .; MACHADO, R. S. .; ARAÚJO, P. C. R. . Substituição da monensina e da virginiamicina por óleos essenciais e ácidos graxos de cadeia curta em bovinos de corte confinados com dieta de puro grão: desempenho, consumo de matéria seca e parâmetros ruminais. Research, Society and Development, [S. l.], v. 12, n. 10, p. e125121043502, 2023. DOI: 10.33448/rsd-v12i10.43502. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/43502. Acesso em: 22 nov. 2024.

Edição

Seção

Ciências Agrárias e Biológicas