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选择感染情况较明显的哺乳母猪和生长猪作为试验对象,利用复方磺胺间甲嘧啶钠注射液对附红细胞体病分组进行疗效试验。用药后3、5、7天,分别检查猪的血象情况与试验前比较,观察附红细胞体感染强度,分析药物疗效。其中“血虫宝”高、中剂量组、药物对照组在用药后,附红细胞体感染血象观察为Ⅲ的(血象观察红细胞感染达50%以上即严重感染)占总试验猪数比例迅速下降,用药前100%,用药后3、5、7天分别为5%～20%、10%～15%、10%～15%,说明了“血虫宝”对附红细胞体病有一定的治疗作用,但不能根治。 相似文献
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刘招生 《畜牧兽医科技信息》2012,(1):32
猪附红细胞体病是猪附红细胞体寄生于红细胞表面、血浆和骨髓等处引起的一种以发热、黄疸、贫血、皮肤发红等为主要临床症状的传染病。1临床症状猪附红细胞体在监床上有其特征样症状:如前期(2～5d)的皮肤发红,中后期(5～8d)耳朵紫色,肛门周围紫色以及毛孔有铁锈样血斑等,后期皮肤发白、毛孔出血、血液稀薄、喘气等症状。 相似文献
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附红细胞体自然感染对猪红细胞的影响 总被引：11，自引：1，他引：10
选择临床健康的 2月龄附红细胞体自然感染仔猪 1 5头 ,每周采血一次 ,连续 4次 ,观察红细胞的形态 ,并测定RBC、红细胞脆性 (最小脆性和最大脆性 )、红细胞ATPase和SOD活性、红细胞C3b受体 (E_C3bRR)率和红细胞免疫复合物花环 (E_ICR)率。检测结果 :随着猪附红细胞体感染强度的增强 ,所测定指标的变化无明显规律性或无明显差异 (P >0 .0 5 ) ,但红细胞脆性增高、红细胞ATPase和SOD活性及E_C3bRR率和E_ICR率均有降低趋势。表明猪感染附红细胞体后 ,红细胞易破裂而溶血、红细胞内外阳离子平衡失调、红细胞抗氧化能力降低、红细胞免疫功能下降。 相似文献
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屠宰猪住肉孢子虫病的调查及血液指标测定 总被引：1，自引：2，他引：1
褚荣鹏 《青海畜牧兽医杂志》2003,33(6):17-18
采用猪膈肌压片镜检法对西宁市园树屠宰点的 80头猪进行了住肉孢子虫的感染率及感染强度的调查 ,同时对其血液九项指标进行了测定。结果表明 :( 1)西宁市猪住肉孢子虫的感染率为 2 2 .5 % ( 18 80 ) ,感染强度为 2 7( 1～ 76)。( 2 )感染猪与非感染猪血液指标相比较 ,红细胞压积明显较低 (P <0 .0 1) ;白细胞数、平均红细胞血红蛋白浓度、血浆总蛋白均较高 (P <0 .0 1)。 相似文献
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为了解猪附红细胞体病在安徽省的流行情况及各药物的治疗效果，我们对安徽十二个县市的326份猪血样进行调查。调查结果显示，猪附红细胞体感染率非常高，表现正常的猪群阳性率达86．96％，发病猪群和康复猪群阳性率分别为95，92％和92，86％。红细胞附红细胞体感染率从5％-98％不等，80％以上的阳性猪红细胞被感染强度超过50％。药物治疗结果显示，贝尼尔效果最好，治愈率达74．29％，但所有药物彻底杀灭附红细胞体的能力均不强，治愈后易复发。表明附红细胞体具有极大的潜在危害性。 相似文献
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猪附红细胞体病的防制研究 总被引：3，自引：0，他引：3
孙荣华 《中国兽医寄生虫病》2004,12(1):6-8
目的 作者为调查了解 2 0 0 1年 5月～ 2 0 0 3年 4月邓州市 2 9个乡镇办 4 6户养猪场 (户 )来诊病猪中感染猪附红细胞体情况。方法 根据临床症状 ,病理变化及实验室诊断 ,确诊附红细胞体病。结果 总调查诊断 10 6 99头病猪 ,查出附红体病猪 2 937头 ,发病率为 2 7.5 % ;死亡 5 5 2头 ,死亡率为 18.8%。其中小猪体重 30 kg以下 5 75 6头 ,发病 1791头 ;中猪 30～ 6 0 kg2 0 0 7头 ,发病 5 5 8头 ;大猪 6 0 kg以上 2 0 16头 ,发病 4 0 3头 ;成年母猪 92 0头 ,发病 185头。发病率分别为 31.1%、2 7.8%、2 0 %、2 0 .1%。死亡率分别为 2 6 %、10 .2 %、5 %、5 %。并采取了中西医结合的综合防制办法 ,进行了治疗 ,治愈 2 35 5例 ,治愈率为 80 .2 % ,显效 30例 ,总有效率为 81.2 %。结论 邓州市患病猪中有 1/ 4以上为猪附红细胞体感染 ,为保证群众养猪业的快速、健康发展 ,必须引起充分重视 ,予以科学诊治 相似文献
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猪轮状病毒(porcine rotavirus)属呼肠孤病毒科(Reoviridae)、轮状病毒属(Rotavirus),是引起仔猪发生急性胃肠道传染病的重要病原,自1975年Woode和Bridge首次从猪体分离出猪轮状病毒以后,世界各国均有不同程度的猪轮状病毒感染报道.在我国猪轮状病毒感染亦十分普遍,李国平等在调查中发现仔猪1～10日龄阳性率42.4%～66%,10日龄到断奶阳性率83.2%～91.7%,断奶后阳性率为63.2%～72%[1].临床症状主要表现为恶心、呕吐、腹泻,成年猪一般呈隐性感染.鉴于猪轮状病毒感染普遍,危害大,对猪进行疫苗接种预防猪轮状病毒感染具有重要意义. 相似文献
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2010年8月,我市养殖户李某饲养的65余头70日左右龄仔猪发生一种以高热、皮肤发红、咳嗽、关节肿胀、跛行为主要特征的疾病,严重的甚至死亡。统计该病发病率高达45%。根据发病情况、临床症状、解剖病变和实验室检测,诊断为附红细胞体与猪副嗜血杆菌混合感染,现报告如下。1发病情况李某饲养有200多头猪,其中繁殖母猪21头,其余为育肥猪、仔猪和哺乳猪。李某的养殖场是老房和院子改造,地处村屯,养殖环境和防疫条件都 相似文献
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魏静 《四川畜牧兽医学院学报》2009,(4):28-32
在现代法律秩序中,商会自治规范是制定法的基础和必要的补充,甚至在某些方面替代了制定法;商会自治规范主要包括商会组织规范、行为规范、惩罚规范以及争端解决规范等;其效力仅及于其内部成员;商会自治规范和制定法之间存在冲突,但也存在整合的基础。 相似文献
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本文概述了猪的毛色类型、猪的毛色遗传模式,着重综述了猪毛色基因分子基础的研究进展,指出存在问题并就未来发展方向做了思考。 相似文献
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REASONS FOR PERFORMING STUDY: Centesis of the bicipital bursa using an 8.9 cm long spinal needle has been reported but the alternative of employing a 3.8 cm long hypodermic needle requires validation. OBJECTIVE: To compare the efficacy of 2 different methods of centesis of the bicipital bursa and to evaluate the usefulness of ultrasonographic imaging to determine the location of solution administered when centesis of the bursa is attempted. METHODS: For Trial 1, 6 clinicians, who had no previous experience of centesis of the bicipital bursa, attempted to inject a solution composed of an aqueous radiopaque contrast medium and physiological saline solution (PSS) into the bicipital bursae of 2/12 horses using the previously described distal approach to inject one bursa and a proximal approach to inject the contralateral bursa. The bicipital tendon and bursa were examined ultrasonographically before and after injection; and both shoulders were examined radiographically to identify the location of the medium. In Trial 2, another 6 clinicians, also with no previous experience of centesis, repeated Trial 1, using 6 horses, but the radiopaque contrast medium was mixed with air instead of PSS. RESULTS: Accuracy of centesis using the proximal approach was 39% and that of the distal approach 28%. Ultrasonographic examination of the shoulder allowed the location of solution and air to be accurately predicted in all 12 shoulders examined. CONCLUSIONS: Clinicians who have had no previous experience performing centesis of the bicipital bursa are unlikely to be successful in centesis using either approach. Radiographic examination after injecting a radiopaque contrast medium may be necessary to assess the success of centesis especially if bursal fluid is not obtained during centesis. Injecting air along with the radiopaque contrast medium provides more accurate ultrasonographic confirmation of centesis and better radiographic definition than does injection without air. 相似文献
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Effects of size of ingestively masticated fragments of plant tissues on kinetics of digestion of NDF
Ingestively masticated fragments were collected and sized via sieving. Different sizes of esophageal masticate and ruminal digesta fragments, and ground fragments of larger masticated pieces were incubated in vitro, and undigested NDF remaining at intervals of up to 168 h of incubation was determined. The ruminal age-dependent time delay (tau) for onset of digestion of NDF was positively correlated (P < 0.004) with the mean sieve aperture estimated to retain 50% of the fragments between successive sieve apertures (MRA). Degradation rate of potentially degradable NDF (PDF) and level of indigestible NDF were not related (P > 0.10) to MRA of masticated and ground fragments. Estimates of tau were positively related to MRA, with slopes of bermudagrass < corn silage < ruminal fragments of corn silage. It was concluded that fragment size-, and consequently, ruminal age-dependent onset of PDF degradation of a mixture of different fragment sizes results in an age-dependent rate of degradation of the more rapidly degrading of two subentities of PDF. Models are proposed that assume a tau before onset of simultaneous degradation of PDF from two pools characterized as having gamma-modeled age-dependency and age-constant rates. The ruminal age-dependent pool seems to be associated with the faster-degrading pool, and its rate parameter increases with range in MRA in the population of fragments. Conceptually, the ruminal age-dependent rate parameter for PDF degradation seems to represent a composite of several effects: 1) effects of the size-dependent tau; 2) range in MRA of the population of ingestively masticated fragments; and 3) subentities of PDF that degrade via more rapid age-dependent rates compared with subentities of PDF that degrade via age-constant rates. The estimated fractional rates of ruminative comminution of ingestively masticated fragments (0.060 to 0.075/h) were of a magnitude similar to the mean fractional rates of PDF digestion (0.030 to 0.085/h), which implies that ruminative comminution may be first-limiting to fractional rate of PDF digestion. The in vivo roles of ingestive and ruminative mastication of fragments on PDF degradation must be considered in any kinetic system for estimating PDF digestion in the rumen. These results and others in the literature suggest that the rate of surface area exposure rather than intrinsic chemical attributes of PDF may be first-limiting to degradation rate of PDF in vivo. 相似文献
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乳酸杆菌作为益生菌广泛用于人和动物.本文综述了乳酸杆菌改善宿主健康的机制.乳酸杆菌可通过产生抗菌物质如乳酸、过氧化氢、细菌素,或者通过竞争营养或肠道黏附位点来抑制致病菌;通过诱导黏附素的分泌或阻止细胞凋亡而增强肠道的屏障功能,从而保护肠道.文章重点讨论了乳酸杆菌表面成分(表面蛋白、脂磷壁酸和肽聚糖)与肠道受体(C型凝集素受体、Toll样受体和Nod样受体),阐述了他们结合后启动免疫调节信号,调控肠道免疫功能以发挥改善健康作用的机制. 相似文献
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Billinghurst RC Brama PA van Weeren PR Knowlton MS McIlwraith CW 《American journal of veterinary research》2004,65(2):143-150
OBJECTIVE: To determine whether serum concentrations of biomarkers of skeletal metabolism can, in conjunction with radiographic evaluation, indicate severity of osteochondrosis in developing horses. ANIMALS: 43 Dutch Warmblood foals with varying severity of osteochondrosis. PROCEDURE: 24 foals were monitored for 5 months and 19 foals were monitored for 11 months. Monthly radiographs of femoropatellar-femorotibial and tibio-tarsal joints were graded for osteochondral abnormalities. Serial blood samples were assayed for 8 cartilage and bone biomarkers. At the end of the monitoring period, foals were examined for macroscopic osteochondrosis lesions. RESULTS: Temporal relationships were evident between certain serum biomarkers and osteochondrosis severity in foals during their first year. Biomarkers of collagen degradation (collagenase-generated neoepitopes of type-II collagen fragments, type-I and -II collagen fragments [COL2-3/4C(short)], and cross-linked telopeptide fragments of type-I collagen) and bone mineralization (osteocalcin) were positive indicators of osteochondrosis severity at 5 months of age. In foals with lesions at 11 months of age, osteochondrosis severity correlated negatively with COL2-3/4C(short) and osteocalcin and positively with C-propeptide of type-II procollagen (CPII), a collagen synthesis marker. Radiographic grading of osteochondrosis lesions significantly correlated with macroscopic osteochondrosis severity score at both ages and was strongest when combined with osteocalcin at 5 months and CPII at 11 months. CONCLUSIONS AND CLINICAL RELEVANCE: The ability of serum biomarkers to indicate osteochondrosis severity appears to depend on stage of disease and is strengthened with radiography. In older foals with more permanent lesions, osteochondrosis severity is significantly related to biomarker concentrations of decreased bone formation and increased cartilage synthesis. 相似文献