Dietary microbial phytase exerts mixed effects on the gut health of tilapia: a possible reason for the null effect on growth promotion.
Br J Nutr
; 115(11): 1958-66, 2016 06.
Article
em En
| MEDLINE
| ID: mdl-27080419
ABSTRACT
The present study evaluated the effects of dietary microbial phytase on the growth and gut health of hybrid tilapia (Oreochromis niloticus â×Oreochromis aureus â), focusing on the effect on intestinal histology, adhesive microbiota and expression of immune-related cytokine genes. Tilapia were fed either control diet or diet supplemented with microbial phytase (1000 U/kg). Each diet was randomly assigned to four groups of fish reared in cages (3×3×2 m). After 12 weeks of feeding, weight gain and feed conversion ratio of tilapia were not significantly improved by dietary microbial phytase supplementation. However, significantly higher level of P content in the scales, tighter and more regular intestinal mucosa folds were observed in the microbial phytase group and the microvilli density was significantly increased. The adhesive gut bacterial communities were strikingly altered by microbial phytase supplementation (0·41Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Citocinas
/
Tilápia
/
6-Fitase
/
Suplementos Nutricionais
/
Microbioma Gastrointestinal
/
Inflamação
/
Intestino Delgado
Limite:
Animals
Idioma:
En
Ano de publicação:
2016
Tipo de documento:
Article