投喂低聚木糖對草魚腸道菌群的影響
熊娟 吳志新 張朋 曲藝 付思思 劉佳佳 陳孝煊*
(華中農(nóng)業(yè)大學(xué)水產(chǎn)學(xué)院 湖北 武漢 430070)
摘 要: 投喂添加0.1%、0.2%,、0.4%和0.6%低聚木糖的基礎(chǔ)飼料56 d, 對草魚(Ctenopharyngodon idellus)腸道菌群進(jìn)行了研究,。分別在投喂前(0 d)和投喂后的第14、28,、42和56天取樣, 對草魚腸道大腸桿菌(E. coli),、氣單胞菌(Aeromonas)和雙歧桿菌(Bifidobacterium)數(shù)量進(jìn)行了分析。結(jié)果表明: 基礎(chǔ)飼料中添加不同濃度的低聚木糖對草魚腸道菌群有一定影響, 大腸桿菌數(shù)量在28 d達(dá)最低值, 其中0.4%組減少的幅度最大, 與對照組比較顯著減少(P<0.05); 氣單胞菌數(shù)量均有減少但與對照組比較差異并不顯著; 雙歧桿菌數(shù)量均有增加, 其中0.4%組在第14天時(shí)差異顯著(P<0.05),。因此, 飼料中添加0.4%低聚木糖效果最佳, 有利于草魚腸道菌群保持健康的狀態(tài),。
關(guān)鍵詞: 低聚木糖, 草魚, 腸道, 菌群
生物谷推薦英文摘要：
Effects of dietary xylo-oligosaccharide on intestinal microflora of grass carp (Ctenopharyngodon idellus)
XIONG Juan WU Zhi-Xin ZHANG Peng QU Yi FU Si-Si LIU Jia-Jia
CHEN Xiao-Xuan*
(College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei 430070, China)
Abstract: Intestinal microflora of grass carp (Ctenopharyngodon idellus) feeding with xylo-oligosac-charide for 56 days by concentrations of 0.1%, 0.2%, 0.4% and 0.6% respectively was investigated in this paper. Numbers of E. coli, Aeromonas and Bifidobacterium were analyzed before feeding and after 14, 28, 42, 56 days. The results showed that there was a certain influence on the intestinal microflora of grass carp after fed with different concentrations of xylo-oligosaccharides. The quantity of E. coli in the intestine of grass carps was smallest on the 28th day, and compared with the control group, 0.4% group significantly different (P<0.05) has the highest decreasing magnitudes. The quantity of Aeromonas re-duced but there was no significant difference with control. The quantity of Bifidobacterium increased and there was significant difference (P<0.05) between control and 0.4% group on 14th day. Therefore, feedstuffs with xylo-oligosaccharide, which were conducive to maintain a healthy state of intestinal microflora, group with 0.4% has the best effect.
Keywords: Xylo-oligosaccharide, Grass carp, Intestine, Microflora
微生物學(xué)通報(bào)提供全文下載
