A mixture of thymol and carvacrol mitigates inflammation and oxidative stress responses in intestinal epithelial cell models

International audienc

Effet de l’apport d’acides gras n-3 et d’antioxydants végétaux dans l’alimentation du porc sur les qualités nutritionnelles et sensorielles du jambon sec

International audienc

Effet de l'apport d'acides gras n-3 et d'antioxydants végétaux dans l'aliment du porc sur les qualités nutritionnelles et sensorielles du jambon sec

National audienc

Effet de la durée d'incorporation d'antioxydants végétaux dans un régime alimentaire riche en acides gras n-3 sur la peroxydation des lipides dans le tissu adipeux et les produits transformés de porc

National audienc

Effet de l’apport d’acides gras n-3 et d’antioxydants végétaux dans l’alimentation du porc sur les qualités nutritionnelles et sensorielles du jambon sec

Session : GénétiqueInternational audienc

Effet de différentes valeurs du rapport des acides gras n-6 et n-3 dans l’aliment du poulet label : conséquences sur la qualité nutritionnelle de la viande

absen

Effect of sanitary housing and dietary fibre level on the adaptation of gut microbiota after weaning

Session II : Modulation and relevance of GIT microbiotaInternational audienc

Effect of sanitary conditions and dietary fibre level on the adaptation of gut microbiota after weaning

International audienceAt weaning, the intestinal microbial ecosystem has to adapt to new feeds and to a new environment. The diverse and abundant commensal microbiota and its production of volatile fatty acids (VFA), especially butyrate, are involved in the prevention of diarrhoea and defence against pathogens. This study investigated the effects of the level of dietary fibre (DF) and sanitary housing conditions on the microbiota of weaned pigs. Forty-eight piglets, weaned at 28 days of age. were housed in clean or poor conditions. They were fed during two consecutive phases, two diets containing a high level (16.9 then 21.7% total dietary fibre-TDF, mainly soluble) or a low level DF (control, 12.1 then 14.6% TDF). Five weeks after weaning, microbiota was analysed using counting techniques and VFA profiles were determined by gas chromatography in faeces collected from the rectum. When compared with the clean conditions, the faeces of piglets housed in the poor environment contained significantly more Lactobacillus and Enterobacteria and less anaerobic sulphite-reducing bacteria (+0.9, +1.1, -2.1 Log(10) CFU/g faeces), 60% more total VFA, with proportionally less acetate and more butyrate (-3%, +4%). The introduction of DF did not affect the composition of the microbiota, tended to increase total VFA (25%), and decreased the level of branched-chain VFA (-1.4%). To conclude, the degraded sanitary housing conditions and to a lesser degree DF, stimulated the bacterial ecosystem in a way that could be beneficial for digestive balance, despite their negative impact on animal performances. (C) 2010 Elsevier B.V. All rights reserved