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1.
本试验旨在研究饲粮中添加屎肠球菌对断奶仔猪生长性能、肠道菌群和免疫功能的影响。选用255头(35±1)日龄断奶的"杜×长×大"三元杂交仔猪,随机分为5个组,每个组3个重复,每个重复17头仔猪。对照组饲喂基础饲粮(不添加抗生素和屎肠球菌);抗生素组在基础饲粮中添加8 mg/kg黄霉素和90 mg/kg阿散酸;屎肠球菌3个试验组在基础饲粮中分别添加100、300、500 mg/kg屎肠球菌。试验期为35 d。结果表明:1)与对照组相比,饲粮中添加屎肠球菌对仔猪平均日采食量(ADFI)、平均日增重(ADG)、料重比(F/G)没有显著影响(P>0.05),但添加100、300 mg/kg的屎肠球菌有提高仔猪ADFI的趋势(P>0.05),添加500 mg/kg的屎肠球菌有降低仔猪F/G的趋势(P>0.05)。与抗生素组相比,饲粮中添加屎肠球菌对仔猪ADG、ADFI、F/G均无显著影响(P>0.05)。2)与对照组相比,饲粮中添加300、500 mg/kg的屎肠球菌显著增加仔猪盲肠中乳酸杆菌的数量(P<0.05);与抗生素组相比,饲粮中添加100、300、500 mg/kg的屎肠球菌对其数量没有显著影响(P>0.05)。与对照组相比,饲粮中添加500 mg/kg的屎肠球菌显著降低仔猪结肠中大肠杆菌的数量(P<0.05),添加300、500 mg/kg的屎肠球菌显著增加仔猪结肠中乳酸杆菌数量(P<0.05);与抗生素组相比,饲粮中添加300、500 mg/kg的屎肠球菌显著增加仔猪结肠中乳酸杆菌数量(P<0.05)。3)与对照组相比,饲粮中添加300 mg/kg的屎肠球菌显著提高仔猪脾脏重量和脾脏指数(P<0.05)。与抗生素组相比,饲粮中添加300、500 mg/kg的屎肠球菌可显著提高仔猪脾脏重量(P<0.05)。4)与对照组相比,饲粮中添加300、500 mg/kg的屎肠球菌显著提高仔猪血液中淋巴细胞数量及淋巴细胞比率(P<0.05),添加100、300、500 mg/kg的屎肠球菌显著提高血清中免疫球蛋白G(IgG)含量(P<0.05),添加300、500 mg/kg的屎肠球菌显著提高血清中免疫球蛋白M(IgM)含量(P<0.05)。与抗生素组相比,饲粮中添加300、500 mg/kg的屎肠球菌显著提高仔猪血液中淋巴细胞比率及血清中IgM含量(P<0.05),添加100、300、500 mg/kg的屎肠球菌显著提高血清中IgG含量(P<0.05)。综上所述,仔猪饲粮中添加屎肠球菌可以改善仔猪生长性能,维持仔猪肠道菌群平衡,有效增强仔猪免疫力,其中以添加500 mg/kg效果最好。 相似文献
2.
《畜牧兽医学报》2017,(10)
旨在探讨高产乳酸菌素屎肠球菌B_(13)在饲料中添加对断奶仔猪生产性能、养分消化率、血清免疫指标、粪便微生物菌群的影响。本试验选用28日龄生长状况良好的"杜×长×大"三元杂交仔猪(初重(7.89±1.37)kg)56头,以体重为区组,分配到4个处理组中:A组(抗生素组)、B组(无抗组)、C组(复合菌组)和D组(试验菌组:屎肠球菌B_(13)),试验周期42d。结果表明:1)C、D两组仔猪的全期平均日增重较B组均明显提高(P0.05),钙的表观消化率较B组显著提高(P0.05);D组血清中IgG抗体水平较B组提高19.72%(P0.05)。2)DGGE结果显示,添加屎肠球菌(D组)对粪便中细菌多样性有影响。3)RT-PCR结果显示,添加益生菌(C、D组)后仔猪粪便中乳酸菌及屎肠球菌数量较B组显著增加(P0.05),并且大肠杆菌数量具有下降趋势(P=0.07)。综上表明,在本试验条件下,饲粮中添加屎肠球菌B_(13)能提高仔猪生产性能、粗蛋白及钙的消化率,增强仔猪免疫力;同时它还能够维持仔猪消化道菌群稳态,遏制致病微生物的生长。 相似文献
3.
本试验旨在研究植物乳杆菌(Lactobacillus plantarum)GF103对生长猪生长性能、营养物质消化率及粪便微生物数量的影响。利用随机区组试验设计方法,将平均体重(26.36±1.93)kg的300头生长猪分为5个组,每组3个重复,每重复20头,重复内生长猪日龄一致、公母各占1/2。对照(CON)组饲喂基础饲粮,抗生素(PC)组在基础饲粮中添加杆菌肽锌40 mg/kg,植物乳杆菌1~3(T1、T2和T3)组分别在基础饲粮中添加1×109、5×109、1×1010CFU/kg的植物乳杆菌GF103。试验预试期7 d,正试期30 d。结果表明:1)T1组生长猪平均日增重和平均日采食量均显著高于其他各组(P0.05),料重比则显著低于其他各组(P0.05)。T2和T3组生长猪的平均日增重、平均日采食量和料重比与PC和CON组相比差异均不显著(P0.05)。各组间生长猪腹泻率无显著差异(P0.05)。2)T1、T3及CON组的总能、干物质、有机物质、粗蛋白质、粗脂肪消化率显著高于PC和T2组(P0.05),各组之间的中性洗涤纤维和磷的消化率无显著差异(P0.05)。3!T1、T2和T3组生长猪粪便中乳酸菌数量显著高于CON和PC组(P0.05),并且粪便乳酸菌数量随着植物乳杆菌GF103添加剂量的增加而增加;各组生长猪粪便大肠杆菌数量无显著差异(P0.05);T1组生长猪粪便中乳酸菌/大肠杆菌与T3组无显著差异(P0.05),显著高于其他各组(P0.05)。结果提示,在生长猪饲粮中添加1×109CFU/kg植物乳杆菌GF103,能够改善生长猪肠道菌群环境,提高生长猪生长速度和饲料利用效率。 相似文献
4.
《饲料工业》2021,(11)
研究通过在基础饲粮中分别添加抗生素和屎肠球菌,研究其对肉鸡生长性能以及血清生化指标的影响。选取180只1日龄平均体重相近的爱拔益加(AA)肉鸡,将其随机分为3组,每组再分为6个重复。第一组为对照组,饲喂基础饲粮;第二组为抗生素组,在基础饲粮中添加黄霉素、吉他霉素和金霉素组合;第三组为屎肠球菌组,在基础饲粮中添加6.75×10~9CFU/kg屎肠球菌。试验共进行42 d。结果表明:相比于对照组,屎肠球菌显著降低了肉鸡1～21日龄平均日采食量(P0.05)和22～42日龄料重比(P0.05),显著增加了21日龄体重(P0.05);抗生素显著降低了肉鸡1～21日龄平均日采食量(P0.05)和22～42日龄料重比(P0.05),显著增加了42日龄体重以及22～42日龄平均日增重和平均日采食量(P0.05)。饲粮添加屎肠球菌促进了肉鸡脂类和蛋白质的合成代谢,提高了肉鸡生长性能。屎肠球菌可替代抗生素应用于肉鸡饲料中。 相似文献
5.
本试验旨在研究饲粮中添加不同剂量的屎肠球菌对肉鸡生长性能、血清生化指标、肠道形态和抗氧化功能的影响。试验选用150只1日龄健康罗斯308肉鸡，随机分为3个组，每组5个重复，每个重复10只鸡（公母各占1/2）。对照组饲喂基础饲粮，低剂量屎肠球菌组和高剂量屎肠球菌组分别在基础饲粮中添加500和1 000 mg/kg屎肠球菌菌粉（活菌数为3.46×108CFU/g）。试验期28 d。结果表明：1）与对照组相比，饲粮中添加不同剂量的屎肠球菌对肉鸡各阶段生长性能均无显著影响（P>0.05）。2）与对照组相比，高剂量屎肠球菌组肉鸡血清总蛋白含量显著提高（P<0.05），血清磷含量有提高的趋势（P=0.054）；低剂量屎肠球菌组肉鸡血清钙含量显著降低（P<0.05）。3）与对照组相比，低剂量屎肠球菌组和高剂量屎肠球菌组肉鸡十二指肠和空肠绒毛高度与隐窝深度比值显著提高（P<0.05），十二指肠隐窝深度显著降低（P<0.05）。4）与对照组相比，低剂量屎肠球菌组和高剂量屎肠球菌组肉鸡血清和十二指肠过氧化氢含量显著降低（P<0.05），空肠过氧化氢酶和谷胱甘肽过氧化物酶... 相似文献
6.
齐梦迪李铁张克英王建萍白世平曾秋凤彭焕伟吕莉丁雪梅 《动物营养学报》2023,(10):6387-6401
本试验旨在研究枯草芽孢杆菌和屎肠球菌长期添加对蛋鸡生产性能、蛋品质和血清指标的影响。选取528只1日龄健康罗曼粉蛋雏鸡,采用2×2双因素试验设计,随机分为4个组,每个组6个重复,每个重复22只鸡。对照组饲喂基础饲粮,试验组分别饲喂在基础饲粮中添加200 mg/kg枯草芽孢杆菌制剂(枯草芽孢杆菌组)、200 mg/kg屎肠球菌制剂(屎肠球菌组)和200 mg/kg枯草芽孢杆菌制剂+200 mg/kg屎肠球菌制剂(枯草芽孢杆菌和屎肠球菌合用组)的饲粮。试验期30周。结果表明:1)与对照组相比,试验组蛋鸡第1~8周料重比均显著降低(P<0.05)。主效应分析结果表明,饲粮添加枯草芽孢杆菌显著降低蛋鸡第1~8周料重比(P<0.05)。2)与对照组相比,试验组蛋鸡23~30周龄产蛋率均显著提高(P<0.05)。主效应分析结果表明,饲粮添加枯草芽孢杆菌显著提高蛋鸡产蛋率和平均蛋重(P<0.05)。枯草芽孢杆菌和屎肠球菌对蛋鸡产蛋率有极显著交互作用(P<0.01)。3)与对照组相比,枯草芽孢杆菌和屎肠球菌合用组蛋鸡血清雌二醇(E2)含量显著提高(P<0.05),屎肠球菌组以及枯草芽孢杆菌和屎肠球菌合用组血清促卵泡生成素(FSH)、抗缪勒氏管激素(AMH)和孕酮(PROG)含量显著提高(P<0.05),枯草芽孢杆菌组血清AMH含量显著高于其他各组(P<0.05)。主效应分析结果表明,饲粮添加屎肠球菌显著提高蛋鸡血清E2、FSH和PROG含量(P<0.05),饲粮添加枯草芽孢杆菌显著提高血清AMH含量(P<0.05)。枯草芽孢杆菌和屎肠球菌对蛋鸡血清AMH含量有极显著交互作用(P<0.01)。综上所述,饲粮添加枯草芽孢杆菌和屎肠球菌均可促进蛋雏鸡早期的生长,并通过提高血清繁殖激素的含量,提高产蛋期产蛋率,但两者合用并没有进一步提升效果。 相似文献
7.
《黑龙江畜牧兽医》2019,(24)
为了研究不同益生菌对断奶犊牛生长性能及瘤胃发酵参数的影响,试验采用单因素完全随机试验设计,选取24头自然分娩、体重相近、3～4月龄左右的断奶西门塔尔犊牛随机分为4组(工程菌组、屎肠球菌组、复合菌组以及对照组),每组6个重复,每个重复1头牛,对照组正常饲喂基础日粮,工程菌组饲喂基础日粮+WB800N-CC31工程菌,屎肠球菌组饲喂基础日粮+屎肠球菌,复合菌组饲喂基础日粮+WB800N-CC31工程菌和屎肠球菌的复合菌(复合菌中工程菌与屎肠球菌比例为1∶1),各试验组中每头牛益生菌的添加量为2×10~(10) cfu/d,试验期为60 d,测定生长性能和瘤胃发酵参数(第30,60天)。结果表明:在整个试验期(0～60 d),各益生菌组对断奶犊牛日增重、采食量、料重比均无显著影响(P0.05),但各益生菌组犊牛日增重均高于对照组,料重比均低于对照组。在试验期第30天时,各益生菌组瘤胃pH值、菌体蛋白和氨态氮浓度、挥发性脂肪酸含量与对照组没有显著性差异(P0.05);在试验期第60天时,屎肠球菌组氨态氮浓度显著大于对照组(P0.05),而其他指标没有显著性差异(P0.05);在试验全期,各益生菌组犊牛瘤胃pH值有降低的趋势,乙酸以及总挥发性脂肪酸有提高的趋势。说明饲喂益生菌可以提高犊牛的生长性能,改善瘤胃发酵环境,对犊牛的健康生长有益。 相似文献
8.
试验目的是评估有机铜和无机铜对生长猪的生长性能的影响。选择平均63日龄且初始体重为(21.46±1.13)kg的100头生长猪随机分为5个处理组,包括:CON组(基础日粮,铜含量为0mg/kg)、T1组(基础日粮+硫酸铜67mg/kg)、T2组(基础日粮+硫酸铜134mg/kg)、T3组(基础日粮+蛋氨酸铜67mg/kg)和T4组(基础日粮+蛋氨酸铜134mg/kg)。试验结果表明,在整个试验期间,日粮处理对生长猪平均日增重(ADG)、平均日采食量(ADFI)和饲料报酬比值(G/F)均无显著性差异。与CON组相比,T1、T2、T3和T44个组生长猪的干物质消化率显著提高(P<0.05)。在T3组较CON组生长猪氮的消化率显著提高(P<0.05)。与T1组相比,CON、T3和T4组生长猪粪便pH显著改善(P<0.05)。CON、T3和T4组生长猪粪便中的铜浓度显著低于T1和T2组(P<0.05)。与CON相比,T2、T3和T4组腹泻率减少。总之,日粮中添加67mg/kg或134mg/kg的蛋氨酸铜能有效地提高养分消化率和生长猪粪便的pH,并能减少粪便中铜的浓度。 相似文献
9.
文章旨在评估日粮添加不同水平的饲用枯草芽孢杆菌对9～24周龄育肥猪生长性能、养分表观消化及粪便特征的影响。将600头9周龄平均初始体重为（22.96±0.09）kg的商品猪随机分为3组,每组5个重复,每个重复40头。对照组饲喂基础日粮,T1和T2组肥猪分别饲喂基础日粮+100和200?mg/kg枯草芽孢杆菌（3×108?CFU/kg）,试验共进行15周。结果：与对照组相比,T2组15?w育肥猪体重显著提高4.37%（P＜0.05）,同时T1和T2组1～15?w育肥猪的平均日增重较对照组分别显著提高3.81%和5.35%（P＜0.05）,饲料报酬分别显著提高4.44%和4.44%（P＜0.05）。T1和T2组育肥猪干物质表观消化率分别较对照组显著提高8.75%和9.37%（P＜0.05）,同时T1组育肥猪有机物表观消化率较对照组显著提高了6.13%（P＜0.05）。日粮添加100和200?mg/kg枯草芽孢杆菌可以显著降低6和15?w育肥猪粪便中氨气浓度和大肠杆菌数量（P＜0.05）,同时T1和T2组15?w育肥猪粪便中乳酸杆菌数量也显著高于对照组（P＜0.05）。结论：日粮添加100～200?mg/kg饲用枯草芽孢杆菌（3×108?CFU/kg）可改善9～24周龄育肥猪的饲料报酬,改善干物质表观消化率,降低粪中氨气浓度和大肠杆菌数量。
[关键词]育肥猪|枯草芽孢杆菌|生长性能|养分消化|粪便特征 相似文献
10.
本试验旨在研究饲粮中添加屎肠球菌SF68对断奶仔猪生长性能、血常规和血清生化指标及抗氧化性能的影响。选取90头21日龄体重[(6.57±0.08)kg]相近的"杜洛克×长白猪×大约克"三元杂交去势断奶仔猪,随机分为5个组,每组3个重复,每个重复6头猪(公母各占1/2)。对照组(CON组)饲喂基础饲粮,抗生素组(ANT组)在基础饲粮中添加0.007 5%的金霉素和0.02%的硫酸抗敌素,抗生素+低剂量屎肠球菌组(ALEF组)在基础饲粮中添加0.007 5%的金霉素、0.02%的硫酸抗敌素和0.01%的屎肠球菌SF68,低剂量屎肠球菌组(LEF组)在基础饲粮中添加0.01%的屎肠球菌SF68,高剂量屎肠球菌组(HEF组)在基础饲粮中添加0.05%的屎肠球菌SF68。试验期21 d。结果表明:1)各组之间断奶仔猪的平均日增重(ADG)、平均日采食量(ADFI)、料重比(F/G)和腹泻指数无显著差异(P0.05)。ALEF、LEF组腹泻指数相比CON组分别降低了65%和67%。2)LEF组血液中平均血红蛋白含量(MCH)、平均红细胞体积(MCV)和淋巴细胞百分比显著或极显著高于CON组(P0.05或P0.01)。3)ALEF组血清中总胆汁酸(TBA)含量显著低于HEF组(P0.05),ALEF组血清中乳酸脱氢酶(LDH)活性显著高于HEF组(P0.05),LEF组血清中胆碱酯酶(CHE)活性显著高于CON组和HEF组(P0.05)。4)ALEF组和LEF组血清中过氧化氢(H_2O_2)含量显著或极显著高于CON组、ANT组和HEF组(P0.05或P0.01),ALEF组和HEF组肝脏中超氧化物歧化酶(SOD)活性、总抗氧化能力(T-AOC)显著高于CON组(P0.05)。ANT组、ALEF组、LEF组和HEF组空肠中H_2O_2含量显著或极显著低于CON组(P0.05或P0.01),ALEF组空肠中SOD活性显著高于ANT组、LEF组和HEF组(P0.05)。ANT组、ALEF组、LEF组和HEF组回肠中SOD活性显著或极显著高于CON组(P0.05或P0.01),丙二醇(MDA)含量显著或极显著低于CON组(P0.05或P0.01)。由此可见,饲粮中添加屎肠球菌SF68可提高断奶仔猪生长性能,减少腹泻,改善血液生理生化指标,增强动物机体氧气运输的能力,提高机体免疫力,调节脂代谢和能量代谢,增强机体的抗氧化性能,并且LEF组作用效果要优于HEF组,但是混合添加抗生素和屎肠球菌SF68要比单独添加屎肠球菌作用效果好。 相似文献
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本研究共开展两个试验,探讨饲粮类型和不添加维生素和微量矿物元素对猪肥育后期生长性能、胴体和肌肉品质、粪中微量矿物元素排泄的影响。在试验1中,选用128头平均体重(78.5±4.6)kg的肥育猪,根据体重和性别分成4组,每组4圈(重复),每个重复8头猪。四组试验猪的试验处理为2×2因子设计,即两种类型(玉米-豆粕型和玉米-杂粕型)饲粮和添加或不添加维生素/微量矿物元素预混料。在试验2中,选用112头平均体重(90.3±6.3)kg的肥育猪,根据体重和性别分成4组,每组4圈(重复),每个重复7头猪。试验处理同试验1。结果显示,在79~110kg肥育期中(试验1),采食玉米-豆粕型饲粮的猪的增重速度和采食量显著高于采食玉米-杂粕型饲粮的猪(P<0.01或0.05)。在90~105kg肥育期中(试验2),采食玉米-豆粕型饲粮的猪的增重速度仍然高于采食玉米-杂粕型饲粮的猪(P<0.05)。但是,维生素和微量矿物元素添加与否对生长性能无显著影响(P>0.05)。饲粮类型和不添加维生素和微量矿物元素对胴体和肌肉品质均无显著影响(P>0.05)。粪中微量矿物元素含量不受饲粮类型的影响(P>0.05),但不添加维生素和微量矿物元素时,粪中铜、铁、锰的含量显著降低(P<0.01),粪中锌含量也有降低的趋势(P>0.05)。对于生长性能、胴体和肌肉品质以及微量矿物元素排泄量,饲粮类型×维生素/微量矿物元素预混料的交互作用不显著(P>0.05)。结果表明,在猪的肥育后期(最后约25~40d),在玉米-豆粕型和玉米-杂粕型饲粮中可不添加维生素和微量矿物元素,从而可降低饲料成本和减少微量矿物元素的排泄。 相似文献
12.
日粮中添加中草药制剂对育肥猪生长性能、胴体性状和肉品质的影响 总被引：4，自引：3，他引：1
This experiment was conducted to investigate the effects of adding Chinese herbal medicine in diets on growth performance,carcass traits and meat quality of finishing pigs.A total of 60 crossbred (Duroc×(Landrace×Yorkshire)) finishing pigs with an average body weight of (61.87±0.90)kg were randomly divided into 2 groups with 3 replicates in each group and each replicate contained 10 finishing pigs (the ratio of male and female was equal).The control group was fed with the basal diet without antibiotics,the experimental group was fed the basal diets supplemented with 0.1% Chinese herbal medicine.The experimental period lasted for 42 days.The results showed that compared with the control group,ADFI and ADG of experimental group were improved （P＞0.05）,F/G of experimental group was decreased （P＞0.05）,whereas the diarrhea rate and morbidity of experimental group were highly significantly reduced （P＜0.01）. Experimental group increased the carcass weight,dressing percentage,leanness,long body straight,body length,loin muscle area by 1.28%,1.80%,0.16%,0.50%,0.80% and 1.46%,respectively,and the thickness of backfat and skin in experimental group were decreased by 1.11% and 4.16%,respectively,but there were no significant differences between 2 groups （P＞0.05）.The suet rate in experimental group was significantly decreased than those in control group （P＜0.05）,kidney weight ratio and pancreatic weight ratio were increased significantly （P＜0.05）,and other indexes were no significant differences between 2 groups （P＞0.05）.Compared with the control group,the water holding capacity in experimental group had an increasing trend (P＞0.05),tenderness in experimental group was significantly reduced (P＜0.05) and the meat color was also improved.It was indicated that adding 0.1% Chinese herbal medicine in diets could promote growth performance and improve carcass traits and meat quality of finishing pigs. 相似文献
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A total of 50 weaning pigs (16 d of age; 4.72 +/- 0.23 kg of BW) were selected to investigate the effect of dietary chito-oligosaccharide (COS) supplementation on growth performance, fecal shedding of Escherichia coli and Lactobacillus, apparent digestibility, and small intestinal morphology. Pigs housed in individual metabolic cages were assigned randomly to 5 treatments (n = 10), including 1 basal diet (control), 3 diets with COS supplementation (100, 200, and 400 mg/kg), and 1 diet with chlortetracycline (CTC) supplementation (80 mg/kg). Fresh fecal samples were collected to evaluate shedding of E. coli and Lactobacillus on d 0, 7, 14, and 21 postweaning. Fresh fecal samples collected from each cage from d 19 to 21 were stored frozen for determination of apparent total tract digestibility. On d 21, all pigs were killed to collect the middle sections of the duodenum, jejunum, and ileum for determination of mucosa morphology. Supplementation of COS at 100 and 200 mg/kg and supplementation of CTC improved (P < 0.05) overall ADG, ADFI, and G:F in comparison with the control. Supplementation of COS at 200 mg/kg as well as supplementation of CTC increased (P < 0.05) apparent total tract digestibility of DM, GE, CP, crude fat, Ca, and P, whereas COS at 100 mg/kg increased (P < 0.05) the digestibility of DM, Ca, and P in comparison with the control diet. Pigs receiving diets supplemented with COS or CTC had a decreased (P < 0.05) incidence of diarrhea and decreased diarrhea scores compared with control pigs. Fecal samples from pigs receiving diets supplemented with COS had greater (P < 0.05) Lactobacillus counts than those from control pigs and pigs receiving diets supplemented with CTC on d 14 and 21. However, supplementation of COS at 200 mg/kg and supplementation of CTC decreased (P < 0.05) E. coli counts in the feces on d 21 compared with the control diet. Dietary supplementation of COS at 200 mg/kg and of CTC increased (P < 0.05) the villus height and villus:crypt ratio at the ileum and jejunum, and COS at 100 mg/kg also increased (P < 0.05) the villus height in the ileum compared with the control diet. The current results indicated that dietary supplementation of COS at 100 and 200 mg/kg enhanced growth performance by increasing apparent digestibility, decreasing the incidence of diarrhea, and improving small intestinal morphology. 相似文献
14.
Effects of xylanase supplementation on growth performance,nutrient digestibility,blood parameters,fecal microbiota,fecal score and fecal noxious gas emission of weaning pigs fed corn‐soybean meal‐based diet 
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下载免费PDF全文 This study was conducted to evaluate the effects of xylanase supplementation on nutrient digestibility, growth performance, blood parameters, fecal microflora shedding, fecal score and fecal noxious gas emission of weaning pigs fed corn‐soybean meal based diet. A total of 150 weaning pigs with an average initial body weight (BW) of 7.85 ± 0.93 kg were randomly allocated to three treatments based on BW and sex (10 replicate pens with five pigs, two gilts and three barrows) were used in this 42‐day trial. Dietary treatments were: (1) CON, basal diet; (2) X1, basal diet +0.005% xylanase; (2) X2, basal diet +0.01% xylanase. The xylanase supplementation linearly increased (P < 0.05) average daily gain (ADG), and gain : feed ratio (G:F) from days 29 to 42 and the in overall period, dry matter, nitrogen and energy digestibility, and fecal Lactobacilli counts, and linearly decreased (P < 0.05) blood urea nitrogen (BUN) concentration, fecal NH3 and H2S emission. Additionally, at weeks 5 and 6, there was a linear decrease in fecal score with xylanase supplementation. In conclusion, dietary supplementation of xylanase improved growth performance, nutrient digestibility, shifted microbiota by increasing fecal Lactobacillus counts, decreased BUN concentration, fecal score, and fecal NH3 and H2S emission in weaning pigs. 相似文献
15.
本研究旨在探讨给妊娠后期和哺乳期母猪补饲发酵芦笋下脚料对母猪粪便形态和乳汁质量的影响。将15头膘情、胎次和预产期相近的妊娠母猪随机分配到Ⅰ组、Ⅱ组和Ⅲ组,每组5个重复,每个重复1头猪。Ⅰ组、Ⅱ组和Ⅲ组母猪每头每天分别补饲0、0.25和0.50 kg发酵芦笋下脚料。试验从母猪妊娠期的第85天开始到产后第21天结束。结果表明:1)给母猪补饲发酵芦笋下脚料能改善母猪的粪便形态。2)Ⅲ组母猪初乳中乳蛋白质、生长激素、胰岛素和免疫球蛋白G水平显著高于Ⅰ组(P0.05),肿瘤坏死因子-α水平显著低于Ⅰ组(P0.05)。3)Ⅱ组和Ⅲ组母猪第10天乳汁中总超氧化物歧化酶活性显著高于Ⅰ组(P0.05),而第21天乳汁中总超氧化物歧化酶活性则极显著高于Ⅰ组(P0.01);Ⅲ组母猪第21天乳汁中丙二醛、白细胞介素-1β、白细胞介素-6和肿瘤坏死因子-α水平分别显著低于Ⅰ组(P0.05)。由此得出,补饲发酵芦笋下脚料能减少妊娠后期和哺乳期母猪便秘的发生,并不同程度地改善母猪乳汁质量。 相似文献
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The experiment was conducted to assess the effects of dietary supplementation of Cu on the growth performance,digestive enzymes,tissue minerals and absorptive transporters in small intestinal mucosa of weanling pigs.One hundred crossbred pigs weaned at 28±2 d of age were assigned randomly to one of the following diets with 5 replicates:corn-soybean basal diet with 10,100,175,250 mg/kg of Cu as CuSO4·5H2O.The results showed that 250 mg/kg Cu had a positive effect (P0.05) on average daily gain,daily feed intake and ratio of gain/feed.Compared to 10 mg/kg Cu,higher Cu had significant effect on the apparent digestibility of protein and fat (P0.05).The supplementing of Cu improved amylase and lipase activity in jejunum content and lipase in pancreas (P0.05) and had no effect on intestinal morphology.The liver Cu elevated approximately 4-fold in pigs fed diet with 250 mg/kg Cu compared with pigs fed diet with 10 mg/kg Cu,no increases were observed in pigs receiving the lower level of Cu (100 and 175 mg/kg).Both Fe and Zn contents in kidney and liver were not affected by Cu supplementation.There was no positive effect (P0.05) of Cu supplementation on PepT1 (peptide transporter 1) and SGLT1 (sodium/glucose cotransporter) mRNA abundance in intestinal mucosa.However,higher supplementing level (250 mg/kg) significantly elevated the DMT1 (divalent metal transporter) mRNA abundance in duodenum mucosa.These results suggested that dietary supplementation with 250 mg/kg Cu could improve growth performance,nutrient digestibility and intestinal enzyme activities of weanling pigs. 相似文献
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复合微生态制剂对断奶仔猪生长性能、腹泻率、免疫性能和肠道菌群的影响 总被引：3，自引：0，他引：3
本试验旨在研究复合微生态制剂对断奶仔猪生长性能、腹泻率、免疫性能和肠道菌群的影响。选取(30±2)日龄平均体重为(8.15±0.05)kg的莱芜黑猪断奶仔猪96头,随机分为4组,每组6个重复(公母各占1/2),每个重复4头猪。Ⅰ组为对照组,饲喂不添加任何益生菌和抗生素的基础饲粮;Ⅱ组为复合微生态制剂组,在基础饲粮中添加1.0‰肽菌素;Ⅲ组为抗生素组,在基础饲粮中添加500 mg/kg硫酸黏杆菌素;Ⅳ组为肽菌素和抗生素混用组,在基础饲粮中添加1.0‰肽菌素的同时添加200 mg/kg的喹乙醇和110 mg/kg的吉他霉素。预试期3 d,正试期28 d。结果表明,1)Ⅱ组平均日增重较Ⅰ、Ⅲ和Ⅳ组分别显著提高了13.16%、15.77%和10.66%(P0.05),F/G分别显著降低了8.54%、12.10%和6.50%(P0.05)。与Ⅰ组相比,Ⅱ、Ⅲ和Ⅳ组均显著降低了仔猪腹泻率(P0.05)。2)与Ⅰ和Ⅲ组相比,Ⅱ组肝脏指数和脾脏指数分别提高了12.13%、24.76%和14.60%、12.45%,血清免疫球蛋白G和免疫球蛋白A含量分别提高了49.73%、37.50%和61.05%、46.67%,且差异均显著(P0.05)。3)与Ⅰ和Ⅲ组相比,Ⅱ组显著降低了胃和十二指肠内容物的p H(P0.05),且显著提高了盲肠和结肠中乳酸杆菌数量(P0.05)。由此可知,本试验条件下,饲粮添加1.0‰复合微生态制剂肽菌素可改善断奶仔猪生长性能,降低腹泻率,促进免疫器官的发育,提高血清中免疫球蛋白含量,增强仔猪免疫力,降低胃和十二指肠内容物p H,改善肠道菌群平衡。 相似文献
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This experiment was to study the effects of corn germ meal in different levels on use value of finishing pigs.120 health PIC piglets aged 45 days with similar body weight （17±2.1）kg were randomly divided into 4 groups of 5 replicates for each group and 6 pigs for each replicates （male and female were the same in each replicate）.Control group was fed basic diet,group one to three were fed diets containing different amounts of corn germ meal （5%，10% and 15%） with the same concentration of the main nutrient items.The results showed that compared with the control group，feed conversion rate in group one was no significant difference （P＞0.05），feed conversion rate in group two had a significantly decreased （P＜0.05），feed conversion rate in group three was significantly increased （P＜0.05)，average daily feed intake in control group was significantly lower than that in other groups （P＜0.05），and there were no significant differences in daily feed intake among experimental groups （P＞0.05）.With the corn germ meal level increasing，the daily feed intake was increased slightly.Group one and group two had a tendency to reduce the serum urea nitrogen content，but group two had a significant difference （P＜0.05），the content of serum urea nitrogen in group three was increased significantly （P＜0.05），there were no significant differences in serum albumin，total protein and glucose levels among all groups （P＞0.05）. Compared with the control group，the apparent digestibility of crude protein and crude fiber in group one had no significant differences （P＞0.05）.The apparent digestibility of crude protein and crude fiber in group two increased significantly （P＜0.05）,and the apparent digestibility of crude protein and crude fiber in group three decreased significantly （P＜0.05）.There were no significant differences in the apparent digestibility of crude fat and crude ash compared with the control group （P＞0.05）.Theses results indicate that the best supplementation level of corn germ meal was 10%，the anti-nutritional factors of corn germ meal may be the cellulose. 相似文献
20.
日粮硒对小鼠肾脏硒沉积及抗氧化酶基因表达的影响 总被引：1，自引：1，他引：0
This study was to explore the effect of dietary selenium on selenium deposition and antioxidant enzymes gene expression in mouse kidney. Four groups （Ⅰ,Ⅱ,Ⅲ and Ⅳ）of mice were fed eight weeks with 0.045,0.1,0.4 and 0.8 mg/kg Se, respectively. The results showed that the levels of kidney selenium deposition increased with the increasing of dietary selenium, groupⅠ was significantly lower than other groups （P＜0.05）. Kidney selenium deposition among Ⅱ、Ⅲ、Ⅳ groups showed no significant differences when fed to the 56th day （P＞0.05）. The TrxR2 mRNA expression of groupⅠwas significantly lower than that of groups Ⅱ and Ⅲ （P<0.05）, and the two groups also showed significant differences（P＜0.05）. The SOD1 and SOD2 mRNA expression levels of groupⅠwere significantly lower than that of groups Ⅱ and Ⅲ （P＜0.05）. SOD2 expression showed significantly different between groups Ⅱ and Ⅲ（P＜0.05）, while SOD1 expression showed no significant differences between the two groups. The CAT mRNA expression levels of groupsⅠ and Ⅱ were significantly higher than that of group Ⅲ （P＜0.05）, there were no significant differences between groups Ⅰ and Ⅱ （P>0.05）. These results indicated that selenium could increase the level of kidney selenium deposition. With the feeding time increased, kidney selenium deposition in high-selenium group showed saturated. Se deficient and excessive could reduce the mRNA expression levels of kidney antioxidant genes (TrxR2, SOD1, SOD2 and CAT). 相似文献