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1.
为调查正常水貂和腹泻水貂肠道菌群差异及发病原因，本试验采集了正常和腹泻水貂的粪便进行16S rRNA测序，并展开微生物物种的分布和丰度聚类差异分析。结果显示，与正常水貂相比，腹泻水貂中厚壁菌门所占比例显著增多(P<0.05),变形菌门和丙型变形菌纲所占比例显著减少(P<0.05);梭菌纲、梭菌目、巴氏杆菌目、巴氏杆菌科、链球菌科、梭菌科、巴氏杆菌属、梭菌属、链球菌属、放线杆菌属所占比例均极显著增多(P<0.01),肠杆菌目、肠杆菌科、肠球菌科、沙雷氏菌属、肠球菌属所占比例均极显著减少(P<0.01)。由此可知，水貂肠道微生物中巴氏杆菌属、梭菌属、放线菌属、链球菌属等多种致病菌群占比及相对丰度显著增加是导致水貂腹泻的原因之一。本试验通过分析得出正常和腹泻水貂肠道内菌种的差异，对疾病的诊断和治疗有一定的意义，并对微生态制剂的发展提供了数据支持。 相似文献
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为阐明人工种植牧草对川西北高寒草地生态系统土壤微生物群落结构和组成的影响,以川西北高寒牧区紫花苜蓿人工草地(Group 1)、燕麦人工草地(Group 2)以及天然草地(Group 3)土壤为对象,采用Illumina Hiseq测序平台对3个草地类型土壤细菌的16S rDNA和真菌的内转录间隔区(Internal Transcribed Spacer,ITS)基因进行序列测定,分析了各样本土壤微生物群落的组成和结构特征。结果表明:1)3种草地植被类型中土壤细菌群落丰富度和多样性无明显差异,真菌群落丰富度亦无显著差异,仅紫花苜蓿人工草地真菌群落多样性程度较燕麦人工草地和天然草地土壤高。2)所测土壤样本主要优势细菌类群为变形菌门(Proteobacteria)、酸杆菌门(Acidobacteria)、放线菌门(Actinobacteria)、疣微菌门(Verrucomicrobia)等,人工草地土壤中酸杆菌门丰度显著低于天然草地土壤(P<0.05),放线菌门丰度显著高于天然草地土壤(P<0.05)。主要优势细菌纲为Spartobacteria纲、α-变形菌纲(α-proteobacteria)、β-变形杆菌纲(β-proteobacteria)、Thermoleophilia纲、酸杆菌纲(Acidobacteria)和放线菌纲(Actinobacteria)等,人工草地与天然草地土壤中多种优势细菌纲相对丰度存在显著性差异(P<0.05)。3)3种草地植被类型土壤优势真菌门是子囊菌门(Ascomycota)、接合菌门(Zygomycota)、担子菌门(Basidiomycota);优势真菌纲有接合菌纲(Zygomycotes)、粪壳菌纲(Sordariomycetes)、伞菌纲(Agaricomycetes)、锤舌菌纲(Leotiomycetes)、座囊菌纲(Dothideomycetes)等,并且各区组间多种优势真菌纲相对丰度差异明显。4)β-多样性结果显示3种草地植被类型土壤细菌和真菌结构均差异明显,且天然草地与人工草地之间的土壤微生物差异系数大于两种人工草地之间的土壤微生物差异系数;聚类分析显示人工种植牧草显著提高了土壤中生防菌类群的相对丰度,同时,土壤中病原真菌的丰度较天然草地土壤也大幅增加。 相似文献
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本试验采用高通量测序技术,研究饲粮中添加发酵豆粕对断奶仔猪粪便菌群多样性的影响。选取36日龄“杜×长×大”仔猪80头,随机分为A、B、C、D组,D组为对照组,饲喂基础饲粮;A、B、C组为试验组,分别在基础饲粮中添加5%、10%、15%的发酵豆粕。试验结束采集4组仔猪的粪便,采用Illumina MiSeq高通量测序技术对其中细菌的16SrRNA基因的V3~V4区序列进行测序。结果表明:1)菌群的平均有效序列数为47218条;在97%的相似水平下共产生了3581个操作分类单元(OTUs);共检测到12个门、21个纲、33个目、64个科、111个属和137个种。2)α多样性指数在各组间均无显著性差异(P>0.05),但B组的Shannon指数最高,菌群最丰富。β多样性分析表明,4组菌群在统计学上存在显著差异(P<0.05),分组效果较好。3)门水平的优势菌为厚壁菌门,科与属水平的优势菌分别为乳酸菌科和乳酸菌属。B组的厚壁菌门相对丰度显著高于D组(P<0.05),乳酸菌属相对丰度显著高于A、D组(P<0.05),但与C组间差异不显著(P>0.05)。4)菌群主要参与的代谢通路为糖类代谢、氨基酸代谢、能量代谢、核酸代谢、辅酶和维生素代谢。除核酸代谢外,其余4种代谢通路中,B组菌群的相对丰度最高并依次为C、A、D组。综上所述,在仔猪饲粮中添加10%的发酵豆粕,能增加肠道菌群的多样性,显著增加肠道中厚壁菌门、乳酸菌科和乳酸菌属等有益菌的相对丰度,维持肠道的健康,促进营养物质的代谢。 相似文献
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本试验旨在探究不同饲喂模式对猪生长性能、养分消化率和肠道微生物组成的影响。选择120头平均初始体重(26.0±0.4)kg的生长猪(公、母各半),按体重和性别随机分为自由采食组(FA)和限制饲喂频率组(每天饲喂3次,M3),每个处理10个重复,每个重复6头猪,试验期共28 d。结果表明:M3组平均日采食量和耗料增重比均显著低于FA组(P<0.05);饲喂模式的改变对养分表观全肠道消化率无显著影响(P>0.05);M3组血浆尿素氮和游离脂肪酸水平显著低于FA组(P<0.05),而胰岛素水平显著高于FA组(P<0.05);饲喂模式对猪粪便微生物组成有一定影响,在门水平上,M3组拟杆菌门丰度显著低于FA组(P<0.05),柔膜菌门和疣微菌门丰度显著高于FA组(P<0.05);在属水平上,M3组Prevotellaceae_UCG-003、Ruminococcaceae_UCG-010、Ruminococcaceae_NK4A214_group、Rikenellaceae_RC9_gut_group和Coprostanoligenes_group的丰度显著高于FA组(P <0.05),而Selenomonas、Roseburia、Prevotella_2、Prevotella_7、Prevotella_9、Anaerovibrio和Alloprevotella的丰度显著低于FA组(P<0.05)。综上,饲喂模式对生长猪养分消化率无显著影响,限制饲喂频率可改变肠道微生物组成并改善生长猪饲料报酬。 相似文献
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试验旨在研究试验兔腹泻与粪便菌群之间的关系,通过16S rRNA基因测序对腹泻试验兔和健康试验兔的粪便菌群组成及丰度进行了研究。结果显示：共测得369 888条有效序列,得到1 738个OTUs,隶属于14个门、21个纲、53个目、97个科及217个属。腹泻晚期试验兔的粪便菌群α多样性指数显著降低（P<0.05）,微生物丰富度显著下降（P<0.05）。腹泻粪便中厚壁菌门（Firmicutes）、梭状芽孢杆菌纲（Clostridia）、颤螺目（Oscillospirales）、毛螺目（Lachnospirales）、毛螺旋菌科（Lachnospiraceae）、瘤胃球菌科（Ruminococcaceae）及瘤胃球菌属（Ruminococcus）丰度明显下降,变形菌门（Proteobacteria）、γ变形杆菌纲（Gammaproteobacteria）、拟杆菌目（Bacteroidales）、肠杆菌科（Enterobacteriaceae）及埃希氏-志贺氏菌属（Escherichia-Shigella）丰度明显升高。腹泻兔和健康兔粪便中有309个OTUs存在显著差异（P<... 相似文献
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目的通过研究对比哺乳期腹泻仔猪与健康仔猪粪便菌群,探讨腹泻对哺乳期仔猪肠道微生物的影响。方法通过高通量16S rDNA测序技术对腹泻组仔猪（n=6）和健康组仔猪（n=3）粪便样本进行测序,比较两组仔猪肠道微生物群落的组成和结构。结果腹泻组仔猪和健康组仔猪粪便菌群差异显著（P<0.05）,腹泻组仔猪的肠道菌群多样性显著（P<0.05）低于健康组仔猪。与健康组仔猪相比,在门水平上,腹泻组仔猪的梭杆菌门和变形菌门的相对丰度显著（P<0.05）增加,而厚壁菌门的相对丰度显著（P<0.05）下降;在属水平上,腹泻组仔猪的梭杆菌属（Fusobacterium）、普雷沃菌属（Prevotella）、埃希菌属（Escherichia）、乳杆菌属（Lactobacillus）、厌氧弧菌属（Anaerovibrio）、拟普雷沃菌属（Alloprevotella）和Fusobacteriaceae_unclassified的相对丰度显著（P<0.05）增加,而大部分厚壁菌门菌属的相对丰度显著（P<0.05）降低。结论通过分析对比腹泻仔猪与健康仔猪肠道微生物多样性,为预防和治疗哺乳期仔猪腹泻提供了理论依据。 相似文献
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为了探究腹泻驴驹与健康驴驹粪便微生物多样性及结构组成差异，筛选出腹泻驴驹的特异性菌群，试验采集同等饲养条件下的腹泻驴驹和健康驴驹的粪便样本各5份，利用16S rRNA高通量测序技术，对腹泻驴驹和健康驴驹粪便在微生物多样性方面(结构和组成)存在的差异进行比较。结果表明：腹泻驴驹粪便微生物的多样性小于健康驴驹(P>0.05)。与健康驴驹相比，在门水平上，厚壁菌门相对丰度显著减少(P<0.05),且梭杆菌门仅出现在腹泻驴驹粪便中；在属水平上，腹泻驴驹粪便微生物中拟杆菌属相对丰度明显升高。说明腹泻驴驹与健康驴驹在粪便微生物多样性方面存在显著差异，厚壁菌门相对丰度减少及拟杆菌属相对丰度增加可能是驴驹腹泻的重要原因。 相似文献
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研究旨在探究猫粮中添加复合益生菌和酶制剂对猫营养物质表观消化率、血常规和粪便菌群的影响。试验将18只英国短毛猫随机分为3组，对照组饲喂基础日粮，A组在基础日粮中添加0.1%复合益生菌+0.5%酶制剂，B组在基础日粮中添加0.6%复合益生菌+0.6%酶制剂，试验期为63 d，测定猫生长指标、血常规指标、营养物质表观消化率、粪便菌群丰富度和多样性等指标。结果表明：(1)对照组第63天白细胞数量显著升高（P<0.05）。(2)A组和B组平均日采食量显著低于对照组（P<0.05），但体重变化差异不显著（P>0.05）；与对照组和A组相比，B组猫的粪便情况显著变好（P<0.05）。(3)随着复合益生菌比例的增加，营养物质表观消化率显著提高（P<0.05）。(4)试验第63天，A组和B组猫粪便菌群Chao1指数、Shannon指数、Simpson指数和观测样本指数均高于对照组。(5)与对照组相比，A组和B组拟杆菌门和纲的相对丰度显著提高（P<0.05）;3组间其他菌群的相对丰度无显著差异（P>0.05）。说明猫粮中添加复合益生菌和酶制剂可提高猫营养物质表观... 相似文献
9.
《中国兽医学报》2017,(6):1179-1185
为了研究高产期不同产蛋水平蛋鸡肠道微生物多样性特征,探究肠道微生物与蛋鸡产蛋水平之间的关联性。应用16SrRNA基因V4~V5区进行高通量测序,检测高产期3个产蛋水平(高产组/低产组/极低产组:6只/6只/3只)蛋鸡粪便样品微生物的组成与菌群分布。结果表明:厚壁菌门(Firmicutes)、拟杆菌门(Bacteroidetes)、放线菌门(Actinobacteria)、变形菌门(Proteobacteria)在3组中均为优势菌群(≥1%),但各自占比在3组中有所差异;在属水平上,高产组中乳杆菌属丰度(66.05%)是极低产组(20.93%)的3倍;PCoA检测显示不同产蛋水平蛋鸡微生物群落结构差异明显,乳酸杆菌属是不同产蛋水平蛋鸡肠道微生物菌群差异的主要菌属,推测其在肠道微生物中的占比与产蛋水平存在着关联性。 相似文献
10.
奶牛养殖场环境微生物群落结构及多样性研究 总被引：1，自引：0，他引：1
为了研究奶牛养殖场部分环境因素与奶牛乳房处的细菌多样性和差异性,将分别取自牛乳房擦拭样品(C1)、榨乳设备(E)、粪便(F)、冲洗和养殖饮用水(W)、生乳运输罐(E2)5种样本的6个生物学重复共计30个样品使用基于16S rRNA (V3~V4区)的高通量测序技术,并采用生物信息学的方法分析了不同来源样本的细菌群落结构、丰度差异和α多样性。结果显示:共获得原始序列1 640 803条,在97%相似度下聚类为26 337个OTUs,注释到35个门,79个纲,119个科,127个目,436个属,210个种。在门分类阶元,丰度最高的是变形菌门,尤其是W样本中变形菌门占比81.8%;C1中优势细菌类群与E和F样本相似,丰度最高的均是厚壁菌门,分别占各样本细菌总量的32.4%、44.7%和53.4%;E2样本中丰度最高的细菌是放线菌门(56.4%)。在属水平上,已注释到的物种丰度最多的为可导致牛乳腺炎的不动杆菌属、棒状杆菌属,并发现E与C1样本微生物相似性最高,不动杆菌属、节杆菌属和嗜冷菌属是2种样本的优势菌群。表明榨乳设备受到了环境污染或者是接触牛乳房导致交叉传播,样本间微生物群落具有较高相关性。结果为奶牛养殖场相关生产活动提供了参考。 相似文献
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试验旨在探讨日粮中添加硫辛酸对焉耆马赛后运动性能、血浆抗氧化能力及代谢指标的影响.选取运动成绩、体重、体尺、年龄相近的焉耆马11匹, 随机分为3组,分别为:对照组(3匹)、试验Ⅰ组(4匹)、试验Ⅱ组(4匹).对照组饲喂基础日粮,试验Ⅰ、Ⅱ组分别在基础日粮中添加12.5、25 g/(d·匹)的硫辛酸.试验开始第20天对各组马匹进行20 km模拟比赛,赛后30 min内测定各组试验马匹的体温、脉搏、呼吸,同时采集各试验组马匹血液.结果表明,无论是赛后0 min还是赛后20 min,试验Ⅰ、Ⅱ组测得的心率均极显著低于对照组(P <0.01);试验Ⅰ组焉耆马血浆中GSH-Px活力比对照组高44.30%(P <0.05);试验Ⅰ、Ⅱ组焉耆马血浆中SOD活力、T-AOC大小分别比对照组高42.33%(P <0.01)、44.72%(P <0.01)和77.41%(P >0.05)、68.62%(P >0.05);试验Ⅰ、Ⅱ组焉耆马血浆中MDA浓度比对照组低41.09%(P <0.05)、23.48%(P >0.05);试验Ⅰ、Ⅱ组焉耆马血浆中NEFA浓度与对照组相比有升高的趋势(P >0.05).在饲料中添加硫辛酸,可提高焉耆马运动性能,有利于焉耆马运动后生理指标的快速恢复,提高运动后焉耆马的抗氧化能力,减缓焉耆马在运动期间的疲劳症状,相比而言,添加12.5 g/(d·匹)硫辛酸组效果较佳. 相似文献
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日粮中添加氨基酸对焉耆马运动性能、血浆抗氧化能力及代谢指标的影响 总被引：2，自引：0，他引：2
试验旨在探讨日粮中添加氨基酸对焉耆马赛后运动性能及抗氧化能力的影响.选取运动成绩、体重、体尺、年龄相近的焉耆马11匹,随机分为3组:对照组(3匹)、试验Ⅰ组(4匹)、试验Ⅱ组(4匹).对照组饲喂基础日粮,试验Ⅰ、Ⅱ组分别在基础日粮中添加不同水平氨基酸.试验开始第20天对各组马匹进行20 km模拟比赛,赛后30 min内测定各组试验马匹的体温、脉搏、呼吸,同时采集各试验马匹血液.结果表明,试验Ⅰ、Ⅱ组焉耆马赛后0 min心率均显著低于对照组(P<0.05),赛后20 min心率、赛后5 min呼吸频率均极显著低于对照组(P<0.01);试验Ⅰ、Ⅱ组焉耆马赛后血浆中GSH-Px、T-SOD活力及GLU浓度分别比对照组高34.41%(P>0.05)、37.02%(P<0.01)、37.41%(P<0.01)和32.06%(P>0.05)、35.46%(P<0.01)、26.98%(P<0.05);试验Ⅰ、Ⅱ组焉耆马赛后血浆中MDA、LA浓度分别比对照组低38.46%(P<0.05)、17.56%(P<0.05)和38.26%(P<0.05)、13.04%(P>0.05).饲料中添加氨基酸,可提高焉耆马运动性能,有利于焉耆马运动后生理机能的快速恢复;可提高运动后焉耆马的抗氧化能力,减缓焉耆马在运动期间的疲劳症状,相比而言,添加0.25%赖氨酸的效果较好. 相似文献
13.
This test mainly studied the effects of supplemental different levels of oil on the performance, plasma antioxidant capacity and other metabolic index of Yanqi horse.9 Yanqi horses were randomly divided into three groups according to performance, body weight, body measurement, age.The control group was fed with basal diet.Horses in the groups Ⅰ and Ⅱ were fed with diet supplemented with 2.5% and 5% of oil.All horses were participated in 20 km racing, on the 20th day.Temperature, heart rate, respiratory rate of all horses were measured, 30 min after the racing.Simultaneously, blood samples were collected from the jugular vein.The results showed that the heart rate value of groups Ⅰ and Ⅱ were highly significant lower than control group (P<0.01), 0 min after the racing.The group Ⅱ was highly significantly lower than control group (P<0.01), 5 min after the racing.The plasma GSH-Px and T-SOD activity of groups Ⅰ and Ⅱ compared with the control group respectively increased by 87.60%(P<0.05), 15.87%(P>0.05) and 98.38%(P<0.05), 38.25%(P<0.05);The plasma MDA and LA concentration of groups Ⅰ and Ⅱ compared with the control group respectively decreased by 53.44% (P<0.05), 24.08%(P<0.05) and 51.42% (P<0.05), 25.08%(P<0.05).In conclusion, the performance and antioxidant capacity of Yanqi horse could be improved by the basal diet added different levels of oil.The physiological function of Yanqi horse could be fast recovery after the racing.Compared, added 5% oil feed supplement was especially effective. 相似文献
14.
添加油脂对焉耆马运动性能、血浆抗氧化能力及代谢指标的影响 总被引：1，自引：0，他引：1
试验旨在探讨日粮中添加油脂对焉耆马赛后运动性能及抗氧化能力的影响。选取运动成绩、体重、体尺、年龄相近的焉耆马9匹,随机分为3组,对照组饲喂基础日粮,试验Ⅰ、Ⅱ组分别在基础日粮中添加不同水平的豆油。试验开始第20天对各组马匹进行20 km模拟比赛,赛后30 min内测定各组试验马匹的体温、脉搏、呼吸,同时采集各组马匹血液。结果表明,试验Ⅰ、Ⅱ组焉耆马赛后0 min心率极显著低于对照组(P<0.01),试验Ⅱ组焉耆马赛后5 min呼吸频率极显著低于对照组(P<0.01);试验Ⅰ、Ⅱ组焉耆马赛后血浆中GSH-Px、T-SOD活力浓度分别比对照组高87.60%(P<0.05)、15.87%(P>0.05)和98.38%(P<0.05)、38.25%(P<0.05);试验Ⅰ、Ⅱ组焉耆马血浆中MDA、LA浓度分别比对照组低53.44%(P<0.05)、24.08%(P<0.05)和51.42%(P<0.05)、25.08%(P<0.05)。饲料中添加油脂可提高焉耆马运动性能,有利于焉耆马运动后生理机能的快速恢复,提高运动后焉耆马的抗氧化能力,相比较而言,添加5%油脂组效果较佳。 相似文献
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16.
Reasons for study: The effect of unilateral enucleation on vision and potential loss of performance in horses has received little study. Objective: To evaluate the likelihood of return to prior discipline following unilateral enucleation in horses, assessing the role of age at enucleation, equine discipline, reason for enucleation, time to vision loss and eye enucleated. Hypothesis: Unilateral enucleation has no significant effect on likelihood of return to work in horses, for both right and left eyes, across age and discipline. Method: A retrospective review of medical records identified 92 horses that underwent unilateral enucleation at the University of Pennsylvania New Bolton Center from April 2000–April 2008. Case variables determined from the medical record included breed and sex of horse, age at enucleation, which eye was enucleated, reason for enucleation and onset of vision loss. Pre‐ and post operative occupations were determined by telephone interview with the owner or trainer of each horse. Results: Based on hospital surgery logs, 92 enucleations were performed over the 8 year period and 77 records were available for review, with follow‐up information available for 34 horses. Of these, 29/34 (85%) horses returned to work in pleasure or trail riding (11/13), flat racing (7/10), hunter/jumpers (4/4), dressage (3/3), group lessons (1/1), eventing (1/1), steeplechase (1/1) and as a broodmare (1/1). Four of 5 horses (4/34, or 12% sample) that did not return to work (2 pleasure and 2 racing) were retired due to anticipated or perceived decrease in performance or behaviour change following unilateral enucleation, with the remaining horse retired from racing for lameness issues unrelated to enucleation. Twenty‐two of 25 horses (88%) with acute vision loss and 7/9 horses (78%) with gradual vision loss returned to their previous discipline. Conclusions: Horses are able to return to a variety of occupations after unilateral enucleation. 相似文献
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There is a lack of research on the benefits and risks of shoeing conditions in harness racing. Thus, our objectives were to: (a) investigate whether velocity times (VT; s/km) are affected by racing unshod (N = 76,932 records on 5,247 horses); (b) determine the potential risks of galloping, being penalized, and disqualification when competing unshod (N = 111,755 records on 6,423 horses); and (c) identify additional environmental factors that affect VT and risks. VT was found to be significantly influenced by shoeing condition (e.g., unshod, shod front, shod hind, or fully shod), but also by sex, age, season, track, track condition, start method, start position, distance, and driver‐horse performance level (p < 2e‐16). The risks of galloping and disqualification were significantly influenced by shoeing condition, sex, age, season, track, start method, start position, or driver‐horse performance level (p ≤ .05). Horses racing unshod had 0.7 s/km lower VT than fully shod horses and showed better performance when racing on neutral tracks during the late summer than horses with other shoeing conditions during the same period. However, racing unshod increased the relative risks of galloping and disqualification by 15%–35% in all seasons. Horses shod only on the hind hooves showed better performance than fully shod horses, without higher risks associated with competing unshod. 相似文献
19.
B. O'MEARA B. BLADON T. D. H. PARKIN B. FRASER C. J. LISCHER 《Equine veterinary journal》2010,42(4):322-326
Reasons for performing study: There is limited information regarding the number of races and the period for evaluation of outcome which is critical for assessment of SDF tendonitis treatments. Objective: To evaluate the re‐injury rate and racing performance of Thoroughbred racehorses that sustain SDF tendonitis in relation to matched controls in terms of number of races post treatment and maximum racing performance ratings before and after injury. Study design: Clinical records and racing histories of 401 racehorses with a first occurrence of SDF tendonitis diagnosed by ultrasonography. Controls were of the same age, sex and were horses training in the same establishment at the time of injury as the case horses and where the trainer reported that the horse had not had a previous SDF tendon injury or treatment. Results: Eighty percent of both case and control horses returned to racing after the date of injury, and the re‐injury proportion within 3 years of treatment was 53%. The difference in Racing Post Rating(max) (RPR(max)) and the Racing Post Rating in the race immediately before the treatment date was significantly smaller in case horses (mean = 9.6 lbs; range = 0–75) compared to control horses (mean = 17.0 lbs; range = 0–79). No significant decrease in RPR(max) was noted post injury. No difference between case and control horses was found for return to racing and racing 3 times, but control horses were significantly more likely to compete 5 races post treatment date than case horses. Conclusion and clinical relevance: Injury was associated with an individual's pre‐injury maximum performance level and return to racing and completion of 3 races are not useful indicator of the outcome of horses with SDF tendonitis. The assessment of the outcome of horses with an SDF injury in a population of racehorses using the number of races post injury requires a minimum of 5 races post injury to be a useful indicator. Further, a re‐injury proportion in a population of horses in training for 3 years post treatment. 相似文献
20.
Reasons for performing study: Standing fracture repair in the horse is a recently described surgical procedure and currently there are few follow‐up data. This case series contains 2 novel aspects in the standing horse: repair of incomplete sagittal fractures of the proximal phalanx and medial condylar repair from a lateral aspect. Objectives: To describe outcome in a case series of horses that had lower limb fractures repaired under standing sedation at Rossdales Equine Hospital. Method: Case records for all horses that had a fracture surgically repaired, by one surgeon at Rossdales Equine Hospital, under standing sedation and local anaesthesia up until June 2011, were retrieved. Hospital records, owner/trainer telephone questionnaire and the Racing Post website were used to evaluate follow‐up. Results: Thirty‐four horses satisfied the inclusion criteria. Fracture sites included the proximal phalanx (incomplete sagittal fracture, n = 14); the third metacarpal bone (lateral condyle, n = 12, and medial condyle, n = 7); and the third metatarsal bone (lateral condyle, n = 1). One horse required euthanasia due to caecal rupture 10 days post operatively. Twenty horses (66.7% of those with available follow‐up) have returned to racing. Where available, mean time from operation to return to racing was 226 days (range 143–433 days). Conclusions: Standing fracture repair produced similar results to fracture repair under general anaesthesia in terms of both the number of horses that returned to racing and the time between surgery and race. Potential relevance: Repair of lower limb fracture in the horse under standing sedation is a procedure that has the potential for tangible benefits, including avoidance of the inherent risks of general anaesthesia. The preliminary findings in this series of horses are encouraging and informative when discussing options available prior to fracture repair. 相似文献