浅谈仔猪大肠杆菌病

仔猪大肠杆菌病是引起哺乳仔猪和断奶仔猪死亡的主要原因,笔者根据临床工作经验,总结了仔猪大肠杆菌病的诊断和防治要点,旨在为临床防控本病提供依据。     

仔猪腹泻病临床诊治策略

仔猪腹泻是临床上遇到的一种常见病、多发病,也是造成养猪户仔猪死亡的一个重要原因.仔猪腹泻由病毒性因素引起的临床常见病主要有：伪狂犬病、圆环病毒病,猪传染性胃肠炎、猪流行性腹泻和猪轮状病毒病等;细菌性因素引起的临床常见主要包括：仔猪黄痢、仔猪白痢、仔猪红痢（仔猪梭菌性肠炎）;饲养管理因素临床常见有：一是母乳因素,二是断奶因素,三是气候环境因素.它们引起仔猪腹泻的主要季节、仔猪饲养情况、发病日龄、临床症状、剖检病变等各不相同,具体表述如下.     

仔猪腹泻的分类鉴别诊断与防治

本文从病原学、流行特点、临床症状、病理变化等方面对临床上常见的4种仔猪腹泻病(仔猪白痢、仔猪黄痢、仔猪红痢、猪传染性胃肠炎)进行分类鉴别诊断,并提出了防大于治的原则,认真落实共性预防措施和个性预防措施,杜绝本病的发生。     

新生仔猪溶血病的综合防治措施

新生仔猪溶血病,是一种由母猪配种过程中血型不合所导致的免疫性疾病。新生仔猪溶血病的临床病症一般以贫血、黄疸和血红蛋白尿为主要症状,溶血病的病发对象一般只存在于个别窝养仔猪中,但是仔猪一旦感染了溶血病,则死亡率高达100%。溶血病仔猪的高死亡率给养猪户带来了巨大的经济损失,为了改善仔猪患溶血病的概率,降低溶血病仔猪的高死亡率,本文分析了新生仔猪溶血病的病因、临床病症,探究防治仔猪溶血病的措施。     

哺乳仔猪黄痢的防治

仔猪黄痢是指发生于初生仔猪的一种急性、致死性高的传染病.以剧烈黄色稀痢和急性败血症为特征,此病的发病率和死亡率均较高,是严重危害哺乳仔猪的传染病之一.笔者在临床实践中,根据仔猪黄痢发病情况、临床症状、剖检情况以及实验室检验结果,提出了对仔猪黄痢的综合防治措施.     

常见仔猪腹泻病的防治

仔猪腹泻是养猪场最常见的疾病,严重影响养猪业的效益。本文总结了仔猪黄痢、仔猪白痢、仔猪红痢、仔猪副伤寒、传染性肠胃炎、猪痢疾和猪轮状病毒七种常见病的流行特点、临床症状、病理变化以及防治方法。     

仔猪梭菌性肠炎的诊断及防治

产气荚膜梭菌为仔猪梭菌性肠炎的病原。仔猪梭菌性肠炎是仔猪的一种急性毒血症性疾病。该病原主要侵害患病仔猪的腹膜和肠道,临床中主要引发肠炎和腹膜炎症状。感染产气荚膜梭菌的仔猪在临床中主要出现严重的腹泻,仔猪肠道发生溃疡,腹膜发炎出血,并且具有十分高的病死率。本文对仔猪梭菌性肠炎的病原、流行病学、临床症状、病理变化以及防控措施进行了阐述,望对相关工作者带来帮助,降低此病的发生,促进养猪业的健康发展。     

猪大肠杆菌病的诊治措施

猪大肠杆菌病是由大肠埃希氏菌引起的一组以仔猪为主的传染病。临床通常以仔猪黄痢、仔猪白痢和仔猪水肿病为典型代表,是一组危害仔猪生长的重要疾病,遍及世界各养猪地区。1临床症状仔猪黄痢、仔猪白痢和猪水肿病的病原均为大肠杆菌,均表现肠炎的症状,但这3种病又各有不同。     

新生仔猪溶血病临床诊断及治疗

新生仔猪溶血病又称新生仔猪溶血性黄疸、同种免疫溶血性贫血或新生仔猪同种红细胞溶解病,是母猪血清和初乳中存在的抗仔猪红细胞抗原的特异血型抗体所致的新生仔猪急性血管内溶血,多导致整窝仔猪死亡。该病在中小型养猪场(户)多发,给现代养猪业造成较大的损失。本文主要结合病例和诊断治疗介绍了新生仔猪溶血病的发病原因、临床症状、临床诊断,并根据诊断结果提出了相应的治疗和预防措施,为今后该病的治疗和预防提供参考。     

猪大肠杆菌病的诊断与防治

猪大肠杆菌病是由病原性大肠杆菌引起的仔猪肠道传染性疾病,常见的有仔猪黄痢、仔猪白痢和仔猪水肿病三种。本文从发病原因、流行特点、临床病症等方面进行了阐述。     

猪传染性胃肠炎临床诊断及防治

猪传染性胃肠炎是由猪传染性胃肠炎病毒引起的急性高度接触性肠道传染病,临床上以腹泻、呕吐和脱水为特征,各种年龄的猪都可发病,对哺乳仔猪的危害最严重.然而以腹泻为主症的还有猪痢疾、仔猪黄痢、仔猪白痢、仔猪红痢(梭菌性肠炎)、流行性腹泻、轮状病毒感染、仔猪副伤寒等7种疫病,为了更有效地防控猪传染性胃肠炎,做到早诊断、早治疗.论文阐述了猪传染性胃肠炎与猪其他7种腹泻疫病的临床症状的区别及猪传染性胃肠炎的防治要点.     

仔猪巴氏杆菌病病原的分离与鉴定

采取病死猪的心、肝、脾、肺、肾、淋巴结等病料,进行巴氏杆菌病病原的分离培养与鉴定。根据流行病学资料、临床症状、病理变化和实验室检查结果,确诊为仔猪巴氏杆菌病。同时,通过药敏试验筛选出敏感抗生素并有效控制了疫情。     

中药复方制剂"百痢净"治疗仔猪下痢的试验

本试验以白头翁、秦皮等十余味中药通过部分浓缩制成复方制剂“白痢净”,对治疗仔猪下痢进行了研究。本品经抑菌试验,对大肠杆菌有明显抑制作用,经１０倍治疗量作动物试验未见不良反应;临床观察治疗仔猪黄痢、白痢、水泻等１８８３１例,治愈１８３０９例,有效率达９７．２３％;对比试验明显优于庆大霉素和微生态制剂促菌生。     

仔猪高死亡率腹泻病因探讨

2010年4月以来,全国各地先后出现高死亡率吮乳仔猪腹泻,以冬春寒冷季节多发、持续时间长、高死亡率为特征,日龄越小死亡率越高,用药物及生物制剂均无法有效控制,给养殖业带来巨大的经济损失。按照流行性腹泻病毒感染、霉菌毒素及中毒等采取相应的防治措施,效果均不明显。按中兽医整体观念、辨证论治,将两方面病因有机结合起来,分析该疾病的病理机制,采用中药复方进行临床验证,取得较好的防治效果,为该病的预防和治疗提供了新的思路与方法。     

Experimental infection of piglets by aerosols of Rhodococcus equi.

The purpose of this study was to investigate experimental infection of the piglet as a model of Rhodococcus equi pneumonia in the foal. Three litters of eight piglets each were exposed to an aerosol of 3.4 X 10(7) R. equi per piglet per day for seven consecutive days. Over the next 23 days the piglets were observed for clinical signs of disease. Periodically after infection one piglet from each litter was killed, the lungs were cultured quantitatively for R. equi and the gross and microscopic pulmonary lesions were assessed. The only clinical evidence of disease was the occurrence of elevated temperatures in the infected piglets. Rhodococcus equi was slowly cleared from the piglets' lungs during the 23 days following aerosolization. Piglets sacrificed seven to ten days after aerosolization had the most extensive pulmonary lesions, consisting of severe consolidation of the cranioventral lobes. Microscopic examination revealed thickened interalveolar septa and alveoli containing many neutrophils and macrophages with intracytoplasmic Gram-positive coccobacilli. The pulmonary lesions in these piglets differed from those of naturally infected foals in that they were not characterized by macrophage-rich abscesses and the infection gradually resolved.     

Prevention and Treatment Test of Piglet Diarrhea

[Objective] The paper was to observe the clinical effects of compound Chinese traditional preparation Shenwudi oral liquid on prevention and treatment of piglet diarrhea, and to explore the diarrhea prevention and growth promotion effect of Shenwudi power on weaned piglets as the medical feed additive. [Method] Diarrhea piglets were randomly grouped, and the clinical prevention and treatment effects of Shenwudi oral liquid were observed. Meantime, the effects of Huangzhi oral liquid and levofloxacin mesylate and sodium chloride injection were determined and compared with that of Shenwudi oral liquid. Shenwudi powder was added into the specific feed of weaned piglets at the dose of 5 g/kg, to observe its diarrhea prevention and growth promotion effect on weaned piglets. Compound amoxicillin powder was added in drug control group at the dose of 0.3 g/kg; no drug was added in blank control group. [Result] The cure rate of sucking piglets by Shenwudi oral liquid was 88.57%, and its protection rate was 100%; the cure rate of weaned piglets by Shenwudi oral liquid was 90.00%, and the total effective rate was 95.00%; the protection rate of weaned piglet diarrhea by Shenwudi powder mixing feed was 100%, and the average daily feed intake on the 42~(nd) day was extremely higher than the blank control group(P0.01). [Conclusion] Shenwudi oral liquid can be used for prevention and treatment of sucking piglet diarrhea.Meantime, Shenwudi mixing feed has good prevention effect and significant growth promotion effect on weaned piglet diarrhea.     

Experimental reproduction of postweaning multisystemic wasting syndrome in cesarean-derived, colostrum-deprived piglets inoculated with porcine circovirus type 2 (PCV2): investigation of quantitative PCV2 distribution and antibody responses.

Sixteen cesarean-derived, colostrum-deprived piglets were inoculated intranasally with porcine circovirus type 2 (PCV2), originally isolated from a pig affected with postweaning multisystemic wasting syndrome (PMWS). At 1 day postinoculation (PI), 3 of the 5 piglets in the uninoculated control group were moved to the room of inoculated piglets for contact exposure. Porcine circovirus type 2 was detected by polymerase chain reaction (PCR) in swabs from inoculated piglets from 1 day PI and from contact piglets from 2 days after cohabitation. Porcine circovirus type 2 was also detected in all serum samples but not in control piglets 7 days PI. Until the end of study, PCV2 was detected in swabs and serum samples by PCR but not in the control piglets. One inoculated piglet died suddenly without clinical signs 19 days PI. Beginning at 14 days PI, 5 piglets, including 1 contact piglet, had clinical signs of depression, anorexia, and icterus, and 1 inoculated piglet died 21 days PI. Most of the piglets exhibiting the above clinical signs became moribund and were necropsied 21 and 28 days PI. In the piglets that showed clinical signs, gross lesions, including icterus of liver and hemorrhage in stomach, and typical histopathological lesions of PMWS, such as lymphoid depletion and basophilic intracytoplasmic inclusion bodies in lymph nodes and other tissues, were observed. Porcine circovirus type 2 was detected by PCR in all tissue samples except in those of the control piglets. Porcine circovirus type 2 was recovered from several tissue samples of the piglets necropsied until 35 days PI. In particular, PCV2 was recovered in high titer from most of the tissue samples of the piglets exhibiting clinical signs. Serum antibody against PCV2 was mostly detected in inoculated piglets and in contact piglets 14 and 21 days PI by an indirect fluorescence antibody test but was not detected in the piglets exhibiting clinical signs until 28 days PI. These results indicate that PCV2 was able to induce clinical PMWS in the absence of other swine pathogens and that there were significant differences in both the quantitative PCV2 distribution in tissues and the antibody response between the piglets that were infected and developed PMWS and those that were infected but remained healthy.     

仔猪等孢球虫与等孢球虫病研究进展

仔猪等孢球虫病是由猪等孢球虫寄生在哺乳期及新近断奶仔猪小肠上皮细胞所引起的一种寄生性原虫病，呈世界性分布，给养猪场造成严重的经济损失。本文对猪等孢球虫病的病原分类、虫体形态和生活史、致病性、流行病学特点、临床症状、病理变化、诊断、防治等方面的目前研究状况进行了综述，为猪等孢球虫病的有效防制提供参考。     

验方治疗仔猪黄白痢

仔猪黄白痢是大肠杆菌引起的细菌性肠道疾病，是以仔猪拉黄色或白色稀粪为主要特征。该病一年四季都有发生，其发病率和死亡率较高，给养殖户带来了巨大的经济损失。为了寻找治疗仔猪黄白痢的特效治疗方法，通过民间走访和向老中兽医悉心请教，总结了一个治疗该病的特效处方，在280例的临床治疗中取得了较好的效果，就此提供给广大养殖业者以供参考。     

微生态制剂在仔猪教槽料中的应用

综述了仔猪早期断奶的意义及早期断奶对仔猪造成的不良影响,并提出使用教槽料的重要性。阐明微生态制剂的功能及其在断奶仔猪上的应用效果。针对仔猪的生理特点,阐述微生态制剂在仔猪教槽料中应用的重要性。