Effects of Lactic Acid Bacteria and Fructooligosaccharides on Growth Performance,Nutrient Digestibility and Serum Biochemical Indices of Arctic Foxes (Alopex lagopus) during Early Growth Period北大核心CSCD     

张婷袁伟涛郭肖兰王凯英徐超 《动物营养学报》2023,(4):2571-2579

This experiment was conducted to study the effects of dietary lactic acid bacteria (LAB) and fructooligosaccharides (FOS) on growth performance, nutrient digestibility and serum biochemical indices of Arctic foxes (Alopex lagopus) during early growth period. Sixty male post-litter Arctic foxes with the average body weight of (1.16±0.15) kg and at the age of (45±3) days were randomly assigned to 4 groups with 3 replicates per group and 5 foxes per replicate. The foxes were fed the following diets, respectively: basal diet (control group), basal diet+3×109 CFU / kg LAB (LAB group), basal diet+5 g / kg FOS (FOS group) and basal diet+3×109 CFU / kg LAB+5 g / kg FOS (LAB+FOS group). The experiment lasted for 30 days. The results showed as follows: 1) on the days 1 to 15, the diarrhea rate of foxes in the LAB group and LAB+FOS group was significantly lower than that in the control group and FOS group (P<0.05). On the days 16 to 30, the average daily gain of foxes in the LAB+FOS group was significantly higher than that in the control group and FOS group (P<0.05), but had no significant difference with LAB group (P>0.05); the diarrhea rate of foxes in the LAB+FOS group was significantly lower than that in the control group and FOS group (P<0.05), but had no significant difference with LAB group (P>0.05); compared with the FOS group, the feed to gain ratio of foxes in the LAB+FOS group was significantly decreased (P<0.05). 2) The dry matter digestibility of foxes in the LAB + FOS group was significantly higher than that in the control group and FOS group (P < 0.05), but had no significant difference with LAB group (P>0.05). There were no significant differences in nitrogen intake, fecal nitrogen, urine nitrogen, nitrogen deposition, net protein utilization and protein biological value among all groups (P>0.05). 3) Serum total protein (TP) content of foxes in the LAB+FOS group was significantly higher than that in the FOS group (P<0.05), but had no significant difference with control group and LAB group (P>0.05). Serum albumin (ALB) content of foxes in the LAB group was significantly higher than that in the control group and FOS group (P<0.05), but had no significant difference with LAB+ FOS group (P>0.05). Serum urea nitrogen (UN) content of foxes in the LAB+FOS group was significantly decreased compared with the control group (P < 0. 05). In conclusion, the combined supplementation of 3 × 109 CFU / kg LAB and 5 g / kg FOS in the diet is beneficial to reduce diarrhea rate, improve dry matter digestibility, improve body immune level, and promote the growth of Arctic foxes during early growth period. © 2023 Chinese Journal of Urology. All rights reserved.  相似文献   

青贮饲料用乳酸菌的高密度培养优化     

《饲料博览》2015,(8)

为制备青贮饲料专用的高效浓缩的植物乳杆菌Lp1发酵液,采用单因素和正交实验对植物乳杆菌Lp1的高密度增殖培养基组分进行研究,同时优化发酵条件。结果表明,植物乳杆菌Lp1的最优增殖培养基组分为6%乳清、3%葡萄糖、1.0%蛋白胨和1.0%酵母粉。当接种量为3%,初始p H 6.2时,42℃下培养14 h,发酵液中植物乳杆菌Lp1的活菌数可以达到3.23×109cfu·m L-1。  相似文献   

乳酸菌液对断奶兔生产性能和肠道菌群的影响     

张麟  孔德顺 《贵州畜牧兽医》2015,39(1)

为研究乳酸菌液对仔兔生长性能及对断奶仔兔肠道菌群的影响,试验选用加利福尼亚兔×新西兰白兔二元杂交仔兔400只,随机分成2组,每组5个重复,于15日龄后进行乳酸菌液饮水,以观察仔兔的生长性能和断奶仔兔肠道菌群的影响。结果:饲喂乳酸菌液能显著提高仔兔的生长性能,在30~40日龄、40~70日龄显著高于对照组(P0.05);断奶前后乳酸菌液组乳酸菌的含量显著高于对照组,大肠杆菌数量差异不显著。  相似文献   

异质发酵型乳酸菌对全株玉米青贮饲料品质和饲用效果的影响     

韩芙蓉  田贵丰  李积友  袁勇  潘晓荣  王建伟 《中国饲料》2023,(18):73-78

为研究异质发酵型乳酸菌对全株玉米青贮饲料品质和饲用效果的影响，分2组处理全株玉米青贮，对照组为空白对照，试验组添加1.0×10¹¹ CFU/g布氏乳杆菌LB 9-2，窖贮180d后开窖进行感官评定、实验室评定及饲喂试验。结果显示：相较于对照组，(1)感官评定，添加LB 9-2菌剂对青贮品质有一定的改善作用，饲料分级从良好提高到优秀等级。(2)发酵品质，试验组pH和乳酸含量降低了4.19%(P<0.01)、8.66%(P<0.05)；乙酸含量和有氧稳定性提高了40.00%、93.31%(P<0.01);NH3-N含量提高了4.10%(P> 0.05)。(3)营养指标，试验组蛋白质、纤维含量降低(P> 0.05)，其中粗蛋白质(CP)、中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)分别降低了0.49%、2.60%、4.64%；碳水化合物含量增加(P<0.05)，其中淀粉、EE分别增加了10.81%、9.20%；矿物质元素含量均有显著(P<0.05)变化，其中K元素含量丰富，接种菌剂后含量增加25.93%；脂肪酸含量增加，其中C...  相似文献   

饲料青贮与利用     

武继勇 《新农业》2011,(3):27-29

1．一般青贮 也称普通青贮，即对常规青饲料密闭在厌氧状态下，通过乳酸菌发酵，使pH值降到3．8而制成的青贮。要掌握好原料的刈割时间，及时收割。一般密植青刈玉米在乳熟期，豆科植物在开花初期，禾本科牧草在抽穗期，甘薯藤在霜前收割。  相似文献   

健康家兔肠道中乳酸菌的分离鉴定     

刘雪美  栾淑莉  温建新 《青岛农业大学学报(自然科学版)》2011,(1):36-39

本试验选用MRS、MRS+10%家兔硬粪浸出液和MRS+10%泡菜汁3种选择培养基,对健康家兔肠道的乳酸菌群分别进行需氧和厌氧培养,根据可培养细菌菌落特征、染色特性、显微镜形态观测,共分离出7株乳酸菌株,其中需氧菌2株,厌氧菌5株。结合生化试验初步鉴定,需氧菌株分别为乳酸乳球菌和短乳杆菌,厌氧菌株分别为嗜酸乳杆菌,嗜粪乳杆菌,肠乳杆菌,乳酸乳杆菌和弯曲乳杆菌。本实验为弄清健康家兔肠道的有益菌群,以便下一步制作更易于在畜禽的肠道中定植存活的复合动物微生态制剂做准备。  相似文献   

乳酸菌及其相应的上清液对凡纳滨对虾存活率、生长性能、免疫反应和抗病性的影响     

《饲料博览》2015,(12)

试验分别从商业益生菌及中国明对虾和矛尾刺虾虎鱼的肠道中分离出53株乳酸菌(LAB)菌株,并对这些菌株的抗菌性和黏附活性进行测定。结果表明,戊糖乳杆菌HC-2和屎肠球菌NRW-2分别具有较高的抗菌性和黏附活性,菌株的鉴定是基于16S r RNA基因序列分析方法。本研究的目的是探讨和比较屎肠球菌NRW-2、L-戊糖乳杆菌HC-2及其相应上层清液对虾(南美白对虾)的生长性能和免疫反应的影响,采用实时荧光定量PCR方法检测中肠、肝胰腺中免疫和消化相关基因的表达水平。研究结果表明,屎肠球菌NRW-2对所有测试的基因有较强的刺激作用,除了喂养2周后中肠Crus tin基因和4周后的pro PO基因,而L-戊糖乳杆菌HC-2和相应的上清液在肝胰腺中有较强的基因诱导作用。根据激发实验,所有治疗组的存活率均显著高于对照组。此外,饲喂菌株的对虾特定生长率比对照组高,而L-戊糖乳杆菌HC-2组低于对照组,但差异不显著。研究表明,所选择的菌株可以用作虾饮食的有效成分,且比L-戊糖乳杆菌HC-2的上层清液效果更好。  相似文献   

优菌素在仔猪养殖中的应用     

《畜禽业》2016,(5)

试验旨在探讨微生态制剂"优菌素"对断奶仔猪生长性能的影响和预防腹泻的效果。试验选用体重为25～30 kg的长白×约克二元杂交商品代断奶仔猪,通过饮水的方式添加"优菌素",观察记录仔猪的饲料消耗、体重变化、发病情况和死亡情况,分析优菌素在实际生产中的作用。结果表明,饲喂乳酸菌类微生态制剂"优菌素"的试验组仔猪比没有饲喂"优菌素"的对照组仔猪日均增重提高6.5%,促生长作用(p0.05)不明显;饲喂乳酸菌类微生态制剂"优菌素"的试验组仔猪比没有饲喂"优菌素"的对照组仔猪腹泻率降低了21%,对腹泻、胀气有明显的防治效果。  相似文献   

《延边大学农学学报》总目次     

《延边大学农学学报》2011,(4):303-304

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无公害蔬菜栽培技术浅析     

郝艳丽 《农机推广与安全》2010,(12):41-42,44

蔬菜是人们生活中必不可少的副食品，它的质量直接关系到人们的生活水平和身体健康，也关系着生产者的产品价位和效益的高低，为此，蔬菜的无公害生产势在必行。对无公害蔬菜栽培技术（包含的基地选择、整地施肥、品种选择与处理、播种育苗、适时定植、田间管理、适时采收等内容）作了详细介绍与分析。  相似文献