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1 Introduction Currently,the consumers made higher and higher demands on quality of food and beganto pay attention to methods and ways of animal production for ensuring food safety andhuman health Antibiotics have been used in animal feeding as growth promoters for longhistory.In recent years,this has increasingly become a focus of heated debate.Much attentionhas been received for their negative effects on animal and human being as well.On one hand,the positive influence of feeding growt… 相似文献
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低聚果糖调节人体肠道菌群功能的研究 总被引:1,自引:0,他引:1
为了研究低聚果糖调节人体肠道菌群的功能和效果,采用卫生部《保健食品检验与评价技术规范》调节肠道菌群功能检验方法进行检验,并将体检指标全部合格的120例成年志愿者随机分为试食组和空白对照组,试食组每天分别服用含量大于等于55%的低聚果糖6mL,空白组则采用果葡糖浆作为安慰剂,连续30d,比较摄食前后两组肠道菌群的变化情况。试验结果表明,试食组试验后较试验前粪便中双歧杆菌数量增加5.8%(P0.01),乳酸杆菌增加0.4%(P0.05),产气荚膜梭菌数量减少8.6%(P0.01),拟杆菌数量增加1.0%(P0.01),肠杆菌和肠球菌分别增加0.4%和0.8%(P0.05);与对照组相比,试验后试食组双歧杆菌增加4.2%(P0.01),乳酸杆菌减少21%(P0.05),产气荚膜梭菌减少7.2%(P0.01),拟杆菌减少0.4%(P0.05),而肠杆菌和肠球菌数量无明显变化(P0.05)。因此,每日摄食3.3g的低聚果糖亦具有调节人体肠道菌群,激活益生菌增殖并抑制有害菌的作用。 相似文献
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饲料中添加β-葡聚糖和低聚果糖对中华鳖幼鳖生长和血清SOD、溶菌酶活力的影响 总被引:11,自引:3,他引:11
在基础饲料中分别添加0.2%、0.3%β 葡聚糖和0.15%、0.25%低聚果糖,饲喂中华鳖幼鳖100d,测定中华鳖的生长和血清超氧化物歧化酶(SOD)、溶菌酶的活力。结果表明,添加0.25%低聚果糖显著提高了幼鳖增重率(P<0.05)和成活率(P<0.05);添加0.3%β 葡聚糖也有提高幼鳖增重率和成活率的趋势,但不显著(P>0.05)。在血清酶活力方面,添加0.25%低聚果糖组SOD酶活力比对照组高31.3%(P<0.05),而添加0.3%β 葡聚糖组的SOD酶活力比对照组高但无显著差异(P>0.05),对照组、0.3%β 葡聚糖组和0.25%低聚果糖组间溶菌酶活力无显著差异(P>0.05)。 相似文献
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在基础饲料中分别添加0.2%、0.3%β 葡聚糖和0.15%、0.25%低聚果糖,饲喂中华鳖幼鳖100d,测定中华鳖的生长和血清超氧化物歧化酶(SOD)、溶菌酶的活力。结果表明,添加0.25%低聚果糖显著提高了幼鳖增重率(P<0.05)和成活率(P<0.05);添加0.3%β 葡聚糖也有提高幼鳖增重率和成活率的趋势,但不显著(P>0.05)。在血清酶活力方面,添加0.25%低聚果糖组SOD酶活力比对照组高31.3%(P<0.05),而添加0.3%β 葡聚糖组的SOD酶活力比对照组高但无显著差异(P>0.05),对照组、0.3%β 葡聚糖组和0.25%低聚果糖组间溶菌酶活力无显著差异(P>0.05)。 相似文献
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为了研究在两种环境胁迫条件下果寡糖(FOS)对尼罗罗非鱼(Oreochromis niloticus)血液中皮质醇(COR)及血糖(GLU)的影响,在含有6%的中草药饲料中分别添加0g/kg(对照组)、1g/kg(A试验组)、3g/kg(B试验组)和5g/kg(C试验组)的果寡糖投喂尼罗罗非鱼,进行为期90d的饲养试验。饲养试验结束后,一部分试验鱼进行致病菌胁迫试验,对试验鱼腹腔注射0.1mL浓度为1.0×106 CFU/mL的无乳链球菌渊Streptococcus agalactiae);另一部分试验鱼进行连续48 h的拥挤胁迫(35 g/L水体)试验,分别在0、3、12、24、36、48h取血样分析其血液中COR及GLU含量。致病菌胁迫试验结果表明,各个组的血液COR及GLU含量在胁迫后前24h内显著提高,其中A组和B组与对照组相比差异显著;在第24h各个组都达到了最大值,但随着时间的推移各组中COR及GLU含量逐渐下降,并慢慢恢复至与对照水平保持稳定。拥挤胁迫试验结果表明,在试验前,各组鱼血液中COR及GLU含量无明显差异,试验后3h,所有组鱼的血液COR及GLU含量都显著上升,上升趋势持续至第12h和第24h,其中A组和B组与对照组相比差异显著,C组与对照组相比略低,随后各个组COR及GLU含量开始下降,最终与对照水平保持稳定。由此可见,添加1~3g/kg的FOS可以有效提高罗非鱼机体的免疫调节能力,缓解鱼类在受到外界刺激引起剧烈的生理变化。 相似文献
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低聚果糖、芽孢杆菌制剂对断奶仔猪生长性能及免疫功能的影响 总被引:1,自引:0,他引:1
研究在28日龄断奶仔猪日粮中添加芽孢杆菌、低聚果糖制剂对其生长性能及血清IgA、IgG、CD4、CD8、猪瘟抗体水平等指标的影响。选择28日龄断奶仔猪(杜×长×大)80 头,分4组,每组4个重复,每重复5头猪,进行为期28 d的饲养试验;处理组分别饲喂基础日粮、基础日粮+0.1%芽孢杆菌制剂、基础日粮+0.4%低聚果糖和基础日粮+0.1%芽孢杆菌制剂+0.4%低聚果糖制剂。结果表明,低聚果糖、芽孢杆菌制剂均能显著提高断奶仔猪日增重、饲料转化率和降低腹泻率(P<0.05);低聚果糖、芽孢杆菌制剂能显著提高断奶仔猪猪瘟抗体水平、血清IgA、IgG水平(P<0.05),但对CD4、CD8指标影响不大。 相似文献
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Effects of rearing temperature and dietary short‐chain fructooligosaccharides supplementation on allochthonous gut microbiota,digestive enzymes activities and intestine health of turbot (Scophthalmus maximus L.) juveniles 下载免费PDF全文
I. Guerreiro P. Enes A. Rodiles D. Merrifield A. Oliva‐Teles 《Aquaculture Nutrition》2016,22(3):631-642
The gut microbiomes of fish play important roles in host development, digestion and health. Evidence suggests that abiotic factors, such as diet and rearing temperature, could affect fish gut microbiota. In this study, the effect of dietary short‐chain fructooligosaccharides (scFOS) on turbot intestinal health, microbiota and digestive enzymes was investigated at two rearing temperatures: 15 and 20 °C. Four practical diets were supplemented with scFOS at 0, 5, 10 and 20 g kg?1. scFOS did not affect fish performance. PCR‐DGGE did not show differences in bacterial profiles between dietary treatments; however, the number of operational taxonomic units, richness and diversity were higher at 20 °C. Enzyme activities in the foregut were not affected by rearing temperature, while in the hindgut, enzyme activities were higher at 15 °C. Total alkaline protease, α‐amylase and lipase activities in the foregut were higher in fish fed 20 g kg?1 scFOS. Prebiotic supplementation had no effect on hindgut α‐amylase activity, while lipase activity of fish reared at 20 °C was higher in fish fed diet with 5 g kg?1 scFOS. No differences were observed in intestinal morphology. This was the first study to simultaneously evaluate the effect of dietary prebiotic level and rearing temperature on fish intestinal microbiota and health. 相似文献
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