接受合生元和麦麸作为额外纤维来源的艾美耳球虫攻击的肉鸡的生长性能、养分利用率、肠道完整性、短链脂肪酸和基因表达
Growth performance, nutrient utilization, gut integrity, short-chain fatty acids, and gene expression in Eimeria-challenged broilers receiving stimbiotics and wheat bran as an additional fiber source.
作者信息
Kasireddy Bhargavi, Lourenco Jeferson, Gonzalez-Ortiz Gemma, Bedford Michael R, Olukosi Oluyinka A
机构信息
Department of Poultry Science, University of Georgia, Athens, GA 30602, USA.
Department of Animal and Dairy Science, University of Georgia, Athens, GA 30602, USA.
出版信息
Poult Sci. 2025 Apr;104(4):104877. doi: 10.1016/j.psj.2025.104877. Epub 2025 Feb 2.
Stimbiotic (STB) supplementation and precise inclusion of dietary fiber (DF) can increase the number of fiber-fermenting microorganisms, enhance growth performance, and increase the cecal concentration of short-chain fatty acids (SCFA), potentially improving overall gut health. 1200 male byproduct-breeder day-old chicks were allocated to six treatments in a randomized complete block design. The treatments were: 1) 0 g/kg wheat bran (WB), no STB, no challenge (NCH); 2) 0 g/kg WB, 0.1 g/kg STB, no challenge (NCH- STB); 3) 0 g/kg WB, no STB, with challenge (CH); 4) 50 g/kg WB, no STB, with challenge (CH-WB) 5) 0 g/kg WB, 0.1 g/kg STB and with challenge (CH-STB); 6) 50 g/kg WB, 0.1 g/kg STB plus the challenge (CH-WB-STB). On d13, birds were inoculated with a solution containing E. tenella, E. maxima, and E. acervulina. Data were analyzed by one-way ANOVA, and Tukey HSD was used to separate the means. During the starter phase, weight gain (WG) was greater (P < 0.05), and FCR was lower (P < 0.05) in the WB compared with the control and STB groups. Birds in NCH and NCH-STB treatments had higher (P < 0.05) WG during the acute, whole challenge, grower, and overall phases. Dry matter digestibility (DMD) was higher (P < 0.05) for NCH-STB and CH-STB, and nitrogen (N) digestibility was higher in the CH-WB and CH-WB-STB than in the NCH-STB group. GLUT-1 and CAT-1 were increased (P < 0.05) in the CH-WB than in NCH-STB group. 4EBP1 was increased (P < 0.05) in CH, CH-WB-STB than NCH and NCH-STB groups, and FBXO9 was higher in CH, CH-WB, CH-WB-STB than NCH group. On d42, CH-WB and CH-WB-STB had lower levels (P < 0.05) of isobutyrate and isovalerate than NCH-STB group. In conclusion, neither STB nor WB inclusion influenced growth performance and SCFA profile in Eimeria-challenged birds. Wheat-bran inclusion decreased ceca branched-chain fatty acids (BCFA), which suggests a lower protein fermentation in the ceca, likely as a result of modification of the ceca microbiota.
补充益生元（STB）并精确添加膳食纤维（DF）可增加纤维发酵微生物的数量，提高生长性能，并增加盲肠中短链脂肪酸（SCFA）的浓度，可能改善整体肠道健康。1200只雄性肉种鸡一日龄雏鸡被随机完全区组设计分为六个处理组。处理组分别为：1）0 g/kg麦麸（WB），不添加STB，无攻毒（NCH）；2）0 g/kg WB，0.1 g/kg STB，无攻毒（NCH - STB）；3）0 g/kg WB，不添加STB，有攻毒（CH）；4）50 g/kg WB，不添加STB，有攻毒（CH - WB）；5）0 g/kg WB，0.1 g/kg STB且有攻毒（CH - STB）；6）50 g/kg WB，0.1 g/kg STB加攻毒（CH - WB - STB）。在第13天，给鸡接种含有柔嫩艾美耳球虫、巨型艾美耳球虫和堆型艾美耳球虫的溶液。数据采用单因素方差分析进行分析，并用Tukey HSD法进行均值分离。在育雏期，与对照组和STB组相比，WB组的体重增加（WG）更大（P < 0.05），饲料转化率（FCR）更低（P < 0.05）。NCH和NCH - STB处理组的鸡在急性、整个攻毒期、生长期和整个阶段的WG更高（P < 0.05）。NCH - STB和CH - STB组的干物质消化率（DMD）更高（P < 0.05），CH - WB和CH - WB - STB组的氮（N）消化率高于NCH - STB组。CH - WB组的葡萄糖转运蛋白1（GLUT - 1）和阳离子氨基酸转运蛋白1（CAT - 1）比NCH - STB组增加（P < 0.05）。4EBP1在CH、CH - WB - STB组比NCH和NCH - STB组增加（P < 0.05），FBXO9在CH、CH - WB、CH - WB - STB组比NCH组更高。在第42天，CH - WB和CH - WB - STB组的异丁酸和异戊酸水平比NCH - STB组低（P < 0.05）。总之，在感染艾美耳球虫的鸡中，添加STB或WB均不影响生长性能和SCFA谱。添加麦麸可降低盲肠支链脂肪酸（BCFA），这表明盲肠中蛋白质发酵较低，可能是盲肠微生物群改变的结果。
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