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Título: | Effects of dietary polyphenol-rich grape products on gut morphology and intestinal microflora in broilers chicks |
Autor: | Chamorro, Susana CSIC ORCID; Pizarro, Manuel; Siqueira, W.; Centeno, Carmen CSIC ; Arija, Ignacio ; Brenes, Agustín CSIC | Fecha de publicación: | 2010 | Citación: | 10th ADSA-PSA-AMPA-CSAS-ASAS Joint Annual Meeting (2010) | Resumen: | Grapes have high amounts of phenolic compounds which can modulate the gut activity as well as to modify the structure and function of the gastro-intestinal tract. An experiment was conducted to study the effect of the inclusion of grape pomace concentrate (GPC) and grape seed extract (GSE) in broiler chick diets on performance, intestinal morphology (jejunum), and ileal and cecal microflora at 21 d of age. Dietary treatments included an antibiotic-free diet (CTL-), a positive control (CTL+, 50 mg/kg of avoparcin), and an antibiotic-free diet containing GPC (60 g/kg) or GSE (7.2 g/kg). Each treatment was randomly assigned to 5 pen replicates (5 birds each). Jejunum histology was examined to determine the villi height, crypt depth, villi-height-to-crypt depth ratio, and muscularis layer thickness. Ileal and cecal contents were assayed for Escherichia coli, lactobacilli, enterococci, and Clostridium perfringens. Performance was not affected by dietary treatments except in the case of birds fed GSE diet which showed a decrease of weight gain. CTL- fed birds had longer villi and deeper crypt depth than birds in any other treatment group. The best villi height: crypt depth ratio corresponding to birds fed GPC diet and the worst to those fed CTL- diet. Muscularis layer thickness was not affected by dietary treatment except in the case of CTL- group which was reduced. In the ileal content, birds fed CTL and GSE diets had the highest population of lactobacilli. Compared with the CTL- diet, the CTL+, GPC and GPS diets increased the populations of enterococci and decreased the counts of C. perfringens in the ileal content. There were no differences in the ileal population of E. coli among all dietary treatments. In the cecal digesta, birds fed GPC and GSE diets had a higher population of E. coli, lactobacilli, enterococci, and C. perfringens than in any other treatment group. Based on the results of the present study, it can be stated that dietary polyphenol-rich grape products modify the intestinal microflora and gut morphology in broiler chicks. | Descripción: | Resumen del póster presentado al 10th ADSA-PSA-AMPA-CSAS-ASAS (American Dairy Science Association - Poultry Science Association - Asociación Mexicana de Producción Animal - Canadian Society of Animal Science - American Society of Animal Science) Joint Annual Meeting, celebrado en EE.UU del 11 al 15 de julio de 2010. | URI: | http://hdl.handle.net/10261/257150 |
Aparece en las colecciones: | (ICTAN) Comunicaciones congresos (IF) Comunicaciones congresos |
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