Abstract

The current study designed to evaluate the effect of oligosaccharide supplemented diets on growth performance, histomorphometric changes, economic efficiency and genetic expression of some growth and immunity-relative genes. One hundred and twenty weaned male rabbits, six weeks of age of two breeds (NZW and APPRI) were randomly allocated into six equal groups; the first supplemented with 0.3% Mannan-oligosaccharide (MOS), the second supplemented with 0.05% Isomalto-oligosaccharide (IMO) and the third considered a control group. Each group contained ten equal replicates. The highest Final body weight and feed consumption were recorded in MOS and IMO groups compared with control. Fortified feed diet with IMO significantly increased duodenal villi area and length than MOS and control groups. At the same time, Spleen white bulb area and length were significantly higher in MOS and IMO than control. Supplementation of MOS and IMO significantly improved carcass traits, economic efficiency and induced certain modifications in some major key genes involved in the regulation of nutrients metabolism, immunity and growth in different tissues. In conclusion, dietary supplementation of MOS and IMO had a desirable positive impact on productive and economic efficiency in the rabbit.

摘要

目前的研究旨在评估添加低聚糖的日粮对一些生长和免疫相关基因的生长性能、组织形态学变化、经济效率和基因表达的影响。将 120 只断奶雄性兔、6 周龄的两个品种（NZW 和 APPRI）随机分成 6 个相等的组；第一个补充了 0.3% 甘露寡糖 (MOS)，第二个补充了 0.05% 异麦芽寡糖 (IMO)，第三个被认为是对照组。每组包含十个相等的重复。与对照组相比，MOS 组和 IMO 组的最终体重和饲料消耗量最高。与 MOS 组和对照组相比，添加 IMO 的强化饲料显着增加了十二指肠绒毛的面积和长度。同时，MOS和IMO的脾白球面积和长度显着高于对照组。添加 MOS 和 IMO 可显着改善胴体性状、经济效益，并在一些参与调节营养代谢、免疫和不同组织生长的关键基因中诱导某些修饰。总之，MOS 和 IMO 的膳食补充剂对兔子的生产效率和经济效益具有理想的积极影响。