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Dietary xylo‑oligosaccharides and arabinoxylans improved growth efficiency by reducing gut epithelial cell turnover in broiler chickens

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Journal of Animal Science and Biotechnology 2024年第3期15卷 1325-1335页

作者： Carla Castro shahram niknafs Gemma Gonzalez‑Ortiz Xinle Tan Michael R.Bedford Eugeni Roura Centre for Nutrition and Food Sciences Queensland Alliance for Agriculture and Food InnovationThe University of QueenslandSt LuciaQLD 4072Australia AB Vista MarlboroughWiltshire SN84ANUK

Background One of the main roles of the intestinal mucosa is to protect against environmental ***-mentation of xylo-oligosaccharides(XOS)is known to selectively stimulate the growth of beneficial intestinal bacteria and improve gut health and function in *** may have an impact on the integrity of the intestinal epithelia where cell turnover is critical to maintain the compatibility between the digestive and barrier *** aim of the study was to evaluate the effect of XOS and an arabinoxylan-rich fraction(AXRF)supplementation on gut func-tion and epithelial integrity in broiler *** A total of 128 broiler chickens(Ross 308)were assigned into one of two different dietary treatments for a period of 42 d:1)control diet consisting of a corn/soybean meal-based diet;or 2)a control diet supplemented with 0.5%XOS and 1%*** treatment was randomly distributed across 8 pens(n=8)with 8 chickens *** intake and body weight were recorded *** d 42,one male chicken per pen was selected based on aver-age weight and euthanized,jejunum samples were collected for proteomics *** Dietary XOS/AXRF supplementation improved feed efficiency(P<0.05)from d 1 to 42 compared to the con-trol *** analysis was used to understand the mechanism of improved efficiency uncovering 346 dif-ferentially abundant proteins(DAP)(Padj<0.00001)in supplemented chickens compared to the non-supplemented *** the jejunum,the DAP translated into decreased ATP production indicating lower energy expenditure by the tissue(e.g.,inhibition of glycolysis and tricarboxylic acid cycle pathways).In addition,DAP were associated with decreased epithelial cell differentiation,and migration by reducing the actin polymerization ***-ting the two main pathways together,XOS/AXRF supplementation may decrease around 19%the energy required for the maintenance of the gastrointestinal *** Dietary XOS/AXRF supplementation improved gr

关键词： Actin Arabinoxylans Broiler Cell turnover Energy metabolism Jejunum Xylo-oligosaccharides

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The evaluation of next-generation probiotics on broiler growth performance, gut morphology, gut microbiome, nutrient digestibility, in addition to enzyme production of Bacillus spp. in vitro

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ANIMAL NUTRITION 2024年第3期18卷 133-144页

作者： Bromfield, Jacoba I. niknafs, shahram Chen, Xiaojing von Hellens, Juhani Horyanto, Darwin Sun, Baode Yu, Lei Tran, Viet Hai Navarro, Marta Roura, Eugeni Bioproton Pty Ltd Brisbane Qld Australia Univ Queensland Ctr Nutr & Food Sci Queensland Alliance Agr & Food Innovat Brisbane Qld Australia Univ Queensland Ctr Anim Sci Queensland Alliance Agr & Food Innovat Brisbane Qld Australia

Considerable research has been conducted into the efficacy of individual probiotics in broiler production, however information on the most effective combinations of synergistic Bacillus probiotic is lacking. This study investigated the impact of different Bacillus strain combinations in broiler chickens, as well as in vitro enzyme production. In experiment one, a total of 576 Ross 308 broilers at 1 d old were grown for 21 d across 6 treatments of maize-soybean diets (n = 12 pens per treatment) to compare three different strain combinations (formulation 1 [F1]: 3 strains Bacillus amyloliquefaciens; F2: Bacillus coagulans and 2 strains B. amyloliquefaciens; F3: B. coagulans, Bacillus licheniformis and 2 strains B. amyloliquefaciens; F5: Bacillus subtilis, B. licheniformis and 2 strains B. amyloliquefaciens), positive control (PC), and a negative control antibiotic treatment group (NC). In Exp. 2, a total of 360 one-day-old ROSS308 broilers were used to test five treatments (n = 9) including PC, NC, F1 and F5 (selected from Exp. 1), and F4 (Bacillus pumilis and 2 strains B. amyloliquefaciens) in a maize-soybean diet. B. amyloliquefaciens F1 demonstrated a significant improvement in feed conversion ratio (FCR) compared to F2 at d 14 (1.49 vs 2.10; P = 0.038) and the body weight (BW) at d 21 (847.0 g vs 787.4 g) compared to other combinations (P = 0.027). The FCR at d 21 tended to be lower in birds fed F1 (1.46 vs 1.66) compared to the control (P = 0.068). Probiotic treatments had significantly improved nutrient digestibility compared to the PC and NC. Also, probiotic treatments supported the growth of Streptococcus, a common commensal genus and reduced the abundance of genera that correlated with low weight gain such as Akkermansia. Experiment two revealed that F4 improved FCR (P < 0.001) and BW at 28 d (P = 0.014). In vitro testing showed a high production of protease and amylase by Bacillus. Thus, the addition of Bacillus probiotics, particularly containing B. amyloli

关键词： Broiler Probiotic Bacillus Gut health Microbial profile LACTIC-ACID BACTERIA INTESTINAL MICROBIOTA GENE-EXPRESSION SUPPLEMENTATION SUBTILIS BARLEY DIETS

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Dietary xylo-oligosaccharides and arabinoxylans improved growth efficiency by reducing gut epithelial cell turnover in broiler chickens.

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畜牧与生物技术杂志(英文版) 2024年第3期 1325页

作者： Carla Castro shahram niknafs Gemma Gonzalez-Ortiz Xinle Tan Michael R.Bedford Eugeni Roura

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