Metafilaxia com disseleneto de difenila em bezerras de corte submetidas ao desmame precoce

Autores

DOI:

https://doi.org/10.26605/medvet-v18n1-6263

Palavras-chave:

antioxidante, bovino, estresse oxidativo

Resumo

Objetivou-se avaliar o efeito metafilático do disseleneto de difenila no desempenho, perfil metabólico e status oxidativo de bezerras de corte submetidas ao desmame precoce. Foram utilizadas 30 bezerras taurinas de corte, filhas de vacas primíparas, entre 60 a 110 dias de vida. As bezerras foram distribuídas de forma randomizada em três grupos experimentais. Grupo controle (GC, n=10): 2 mL de solução de NaCl a 0,9%. Grupo dimetilsulfóxido (GDMSO, n=10): 2 mL de dimetilsulfóxido a 99,2%. Grupo disseleneto de difenila (GDD, n=10): 3 µmol/kg de (PhSe)2 a 98%, diluído em 2 mL de dimetilsulfóxido 99,2%. O intervalo entre dias considerado como momentos (M), foi de 14 dias, e a avaliação de peso e coleta de amostras de sangue ocorreu no M1=basal (-28 dias), M2 (-14 dias), M3 (dia 0), M4 (14 dias) e M5 (28 dias), já as administrações dos tratamentos no M1, M2, M3. Houve efeito significativo para momento: ganho médio diário (P<0,0001), proteína total (P<0,0001), globulina (GL) (P<0,0001), glutationa reduzida (P=0,0263), substâncias reativas ao ácido tiobarbitúrio (P<0,0001) e potencial antioxidante redutor férrico (P<0,0001), exceto para albumina (P=0,1374). A suplementação com disseleneto de difenila em bezerras de corte desmamadas precocemente não preveniu a alteração de parâmetros oxidativos sanguíneos, sugerindo a ocorrência de estresse oxidativo. Porém, no grupo tratado com disseleneto de difenila houve incremento no ganho de peso, proteína total e globulina, propondo que o uso deste antioxidante em momentos estratégicos pode sim condicionar os animais, promover bem estar e reduzir os efeitos deletérios causados pelo desmame, como a perda de peso.

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Publicado

23-05-2024

Como Citar

Parmeggiani, E. B., Rodrigues, C. M., Bernardi, L. S., Trentin, J. M., Cibin, F. W. S., Prestes, A. M., & Leal, M. L. do R. (2024). Metafilaxia com disseleneto de difenila em bezerras de corte submetidas ao desmame precoce. Medicina Veterinária, 18(1), 55–70. https://doi.org/10.26605/medvet-v18n1-6263

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Produção Animal