Effect of 2-hydroxy-4-(methylthio) butanoic acid and acidifier on the performance, chyme pH, and microbiota of broilers.
Anim Sci J
; 91(1): e13409, 2020.
Article
em En
| MEDLINE
| ID: mdl-32524726
ABSTRACT
This study was aimed to explore the comparative acidifying properties of 2-hydroxy-4-(methylthio) butanoic acid (HMTBA) and a combination of DL-methionine (DLM) and acidifier in male broiler production. A total of 480 1-day-old broiler chicks were randomly divided into four treatments A (low HMTBA, 0.057% HMTBA); B (low acidifier, 0.05% DLM + 0.057% acidifier); C (high HMTBA, 0.284% HMTBA); and D (high acidifier, 0.25% DLM + 0.284% acidifier). At 21 d, growth performance, chyme pH, digestive enzyme activities, and intestinal microflora were measured. The pH of crop, gizzard, and ileum contents was higher in the HMTBA treatment group than in DLM + acidifier treatment group. Furthermore, acidifier supplementation promoted growth of butyrate-producing bacteria such as Faecalibacterium, whereas high HMTBA (0.284%) inhibited the proliferation of acid-producing bacteria including Roseburia and Collinsella. The chymotrypsin activity was lower in the HMTBA group than in the DLM + acidifier group. In contrast, high-level HMTBA group showed higher average daily gain and average daily feed intake than the DLM + acidifier group. These results suggested that HMTBA work through different pathways with DLM plus acidifier.
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Base de dados:
MEDLINE
Assunto principal:
Galinhas
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Microbioma Gastrointestinal
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Fenômenos Fisiológicos da Nutrição Animal
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Metionina
Idioma:
En
Revista:
Anim Sci J
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
China