Metionina hidroxi análoga e DL-metionina: efeitos na histomorfometria intestinal e do aparelho reprodutivo de poedeiras leves na fase de produção

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Resumo

Avaliou-se a bioeficácia relativa do ácido 2-hidroxi-4-(metiltio)butanóico sal de cálcio (HMBA-Ca) em comparação a DL-metionina (DLM) aos níveis de metionina em poedeiras leves nos parâmetros histomorfométricos e hepáticos. Um total de 1080 poedeiras Hy-line W80 foram distribuídas aleatoriamente em arranjo fatorial: 2x4+1 (2 fontes, 4 níveis de suplementação cada: 0.46, 0.54, 0.56 e 0.58 % e 1 grupo isento de suplementação). No intestino, aves alimentadas com DLM tiveram maior largura, altura e área de superfície de vilo e relação vilo cripta (p<0.05). A bioeficácia foi de 99, 78, 83 e 79 %, respectivamente. A suplementação de metionina reduziu a probabilidade de esteatose (p<0.05). A suplementação proporcionou redução do perfil lipídico hepático (p<0.05). DLM apresentou maior espessura de epitélio do magno e os níveis influenciaram altura e largura de dobra uterínica (p<0.05). A bioeficácia foi de 70, 131 e 76 %. A suplementação de metionina independente da fonte utilizada foi benéfica ao desenvolvimento da mucosa intestinal, do útero, magno, e menor incidência de esteatose hepática. De acordo com a bioeficácia, aves alimentadas com DLM apresentam maior biodisponibilidade em relação a HMBA-Ca. Contudo, recomenda-se o nível de 0.58 % de metionina com a DLM por ter proporcionado os melhores resultados.
Palavras-chave: morfometria intestinal; gordura hepática; dobras uterinas.

 

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Publicado

2026-02-06

Como Citar

FERREIRA , Thamires da Silva; SOARES, Márcia das Neves; KANEKO , Isabelle Naemi; PINHEIRO , Sarah Gomes; COSTA, Fernando Guilherme Perazzo; JÚNIOR , Romilton Ferreira de Barros; SILVA, Joelma Vasconcelos Celestino da. Metionina hidroxi análoga e DL-metionina: efeitos na histomorfometria intestinal e do aparelho reprodutivo de poedeiras leves na fase de produção. Ciência Animal Brasileira / Brazilian Animal Science, Goiânia, v. 27, 2026. Disponível em: https://revistas.ufg.br/vet/article/view/82584. Acesso em: 7 fev. 2026.

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