雏鸡鼠伤寒沙门氏菌和鸡伤寒沙门氏菌 混合感染的诊断

为对发病雏鸡群进行确诊,通过流行病学调查、病雏剖检观察及细菌分离鉴定,并对分离菌进行小白鼠接种观察,证实鸡群发生了由鼠伤寒沙门氏菌和鸡伤寒沙门氏菌混合感染引起的禽副伤寒和禽伤寒,其中鼠伤寒沙门氏菌是主要病原,感染率高于鸡伤寒沙门氏菌。药物敏感试验结果表明,分离菌对多种常见抗生素表现敏感。     

鸡伤寒沙门氏菌病的诊治

１９９５年１１月下旬,河北某蛋种鸡场暴发伤寒沙门氏菌病,发病达１５％～２０％,死亡达１０％。经笔者诊断并采取综合防制措施,取得了良好的效果,现报告如下。１发病情况１９９５年４月中旬,该场从当地某种鸡场进雏４７００多只,饲养至第２９日周龄时,各项生产指...     

鹧鸪鸡伤寒沙门氏菌感染的诊断与治疗

某鹧鸪养殖场饲养10000只鹧鸪，240日龄发病，临床症状表现为病鹧鸪采食量突然下降，精神不振、羽毛蓬松杂乱、粪便呈稀白色，病程持续近一个月，死亡鹧鸪约200只。共送检30只，剖检病理变化主要为肝肿大、质地极脆易破裂，其中60％肝呈土黄色，20％血液稀薄，80％盲肠内有硬泥块样物质，20％眼周皮下水肿，30％肾肿大、有出血，30％泄殖腔有白色粪便。根据病史调查、症状观察、病理剖析、细菌分离以及染色镜检、生化试验、血清型鉴定一系列试验，诊断为由鸡伤寒沙门氏菌感染所引起的细菌性疾病。同时根据药敏试验结果对发病群进行治疗，使病情得到迅速控制，为该病的防治积累了一定的经验。     

鸡大肠杆菌与禽伤寒沙门氏菌混合感染的诊疗

山东省滨州地区某养鸡专业户饲养的 2 6日龄肉鸡发生以精神萎靡、食欲不振、排黄白色稀便为主要症状的疾病。经临床观察 ,病理剖检及实验室诊断 ,确定为大肠杆菌与禽伤寒沙门氏菌混合感染。通过药敏试验 ,选择敏感药物及时治疗 ,在较短的时间内控制了疫情。1　发病情况该养鸡户饲养肉鸡 90 0余只 ,在 2 6日龄时突然发病 ,发病率为 37 7% ,病死率为 5 5%。发病后 ,该场技术人员曾用氯霉素、庆大霉素、环丙沙星等药物治疗 ,但效果不理想。2　临床症状　病鸡精神萎靡 ,羽毛松乱 ,食欲下降 ,虚弱脱水 ,病初体温升高至 44℃ ,呼吸困难 ,后下痢 ,…     

雏鸡伤寒沙门氏菌病的诊治

日照市某鸡场新进蛋雏鸡2000只,4日龄暴发了以精神沉郁、排黄白稀便、卵黄吸收不良、肺炎、肝脏肿大呈铜绿色、表面有粟粒大灰白或灰黄色坏死灶为主要特征的传染病,根据临床症状、病理剖检和实验室检查结果,确诊为雏鸡伤寒沙门氏菌病。采用敏感药物连续治疗2个疗程,病情得到控制,但仍有个别零星死亡的鸡。先后发病1690只,死亡和淘汰1456只,发病率达到84．5％,死淘率达到86％。追踪调查种鸡场,随机抽查相应种鸡100只,伤寒沙门氏菌阳性者达到46只,阳性率达到46％。     

PCR检测感染鸡沙门氏菌和鼠伤寒沙门氏菌

用ＰＣＲ技术检测鸡感染沙门氏菌ＤＮＡ并与常规细菌分离培养作比较。从感染鸡沙门氏菌或鼠伤寒沙门氏菌的鸡组织中提取ＤＮＡ。所用的一对引物是ＩｎｖＡ中的定向序列合成的，细菌分离自样品的顶培养物。用ＰＣＲ技术从感染鸡组织ＤＮＡ中扩增了２８４ｂＰ的一个片段，与预期的结果一致。用ＰＣＲ方法不仅可检测出细菌分离阳性鸡组织中的ＤＮＡ，而且可以检出细菌分离阴性鸡组织中的ＤＮＡ，从２０个感染鸡沙门氏菌２１ｈ后的样品中     

雏鸡伤寒沙门氏菌病的诊断报告

雏鸡伤寒沙门氏菌病的诊断报告杨小玲（甘肃省兽医推广技术总站兰州７３００４６）伤寒沙门氏菌对各品种育成鸡均具有易感性,但雏鸡感染该菌的报道还很少见。１９９７年２月１６日,皋兰某育成鸡场爆发雏鸡伤寒沙门氏菌病,造成很大的经济损失,现报道如下。１发病情况该...     

育成鸡群组织滴虫与蛔虫混合感染的诊治

育成鸡群组织滴虫与蛔虫混合感染的诊治全国栋，乔广荣，谷翊，李景林，刘全在，曾昭常（齐齐哈尔市兽防站）（齐齐哈尔市动物检疫站）黑龙江省齐齐哈尔市城区一个体养鸡户，饲养的京白育成鸡群于１９９４年５月发病，少数开始下痢，以后病鸡增加，并有死亡。户主自购药大...     

鹧鸪鸡伤寒沙门氏菌感染的诊断与防治

某鹧鸪养殖场饲养10 000只鹧鸪,240日龄发病,临床症状表现为病鹧鸪采食量突然下降,精神不振、羽毛蓬松杂乱、粪便呈稀白色,病程持续近一个月,死亡鹧鸪约200只.共送检30只,剖检病理变化主要为肝肿大、质地极脆易破裂,其中60%肝呈土黄色,20%血液稀薄,80%盲肠内有硬泥块样物质,20%眼周皮下水肿,30%肾肿大、有出血,30%泄殖腔有白色粪便.根据病史调查、症状观察、病理剖检、细菌分离以及染色镜检、生化试验、血清型鉴定一系列试验,诊断为由鸡伤寒沙门氏菌感染所引起的细菌性疾病.同时根据药敏试验结果对发病群进行治疗,使病情得到迅速控制,为该病的防治积累了一定的经验.     

Infection dynamics of Ascaridia galli in non-caged laying hens

The infection dynamics of Ascaridia galli in laying hens was investigated in six commercial non-caged flocks. Three flocks were managed in accordance with the regulations for organic production and had outdoor access, whereas three flocks were housed indoors in aviaries or traditional floor systems. Faecal egg counts and total worm burdens were determined at specified intervals during the first 50 weeks of the production period. In two conventional flocks the efficacy of flubendazole on lumenal stages was investigated. All flocks became infected following the arrival of the birds (post placement) with residual infective eggs derived from the previous flock. In four flocks (two organic and two conventional) parasite eggs were first detected in faeces 6-7 weeks post placement, whereas parasite eggs were not detected until after 17-18 weeks in two flocks. This delay was observed in two of three flocks that were housed in barns that had been thoroughly cleaned and disinfected by chlorocresol. In three flocks (two conventional and one organic) flubendazole was administered to the birds in the drinking water for approximately one week. Both conventional flocks were dewormed twice approximately 20 weeks apart, whereas the organic flock was dewormed only once about 40 weeks post placement. Parasite eggs reappeared after deworming in all flocks, often within 2-4 weeks, followed by a rapid increase in parasite egg expulsion. Our results suggested impairment of host immunity post treatment, as the egg counts exceeded pre-treatment levels after 7-8 weeks on both conventional farms. Accordingly, the way by which anthelmintics and/or disinfectants are used in non-caged chicken flocks must be refined.     

Establishment of Ascaridia galli in betamethasone-treated chickens

Twenty-five day-old White Leghorn chickens were each infected orally with 500 (Group I), 1000 (Group II) and 2000 (Group III) infective eggs of Ascaridia galli and were killed 30 days after the infection. A high percentage of the infecting dose (6.5%) established as adult worms in the intestine of chickens receiving the lowest level of primary infection, but as the amount of primary infection given to birds increased, there was a significant fall in the percentage establishment of adult worms in the intestine. A similar pattern of worm establishment was shown by chickens of the same age and receiving similar levels of primary infections, but which were treated with betamethasone at a dose of 2 mg/kg body weight commencing 5 days before and continuing up to 15 days after the infection. Betamethasone-treated birds, however, showed more establishment of worms in the intestine, but lower weight gains in comparison to the birds which were not treated. Different levels of primary infections given, with or without treatment with betamethasone, had no effect on the sex ratio of the resultant male/female worm populations, which became established in almost equal numbers in the intestine of chickens.     

Effect of anthelmintics on phosphatases in Ascaridia galli.

In vitro addition of the drugs tetramisole (TMS) and levamisole (LMS) caused an inhibition of the specific activities of acid phosphatase and Mg(++)-dependent adenosine triphosphatase. The inhibition was non-competitive in nature. No significant inhibition was caused by TMS in the activity of glucose-6-phosphatase, but LMS inhibited the enzyme in a non-competitive manner. The activity of alkaline phosphatase was, however, increased in the presence of both TMS and LMS.     

蓝孔雀球虫与魏氏梭菌混合感染的诊治

2003年9月,莒南县一公园内饲养的10只60日龄左右小蓝孔雀突然发生一种以排红色、褐色煤焦油样稀粪为特征的疾病,1～2天后死亡6只,经综合诊断为球虫与魏氏梭菌混合感染。现将诊治情况报告如下。     

鸡新城疫与大肠杆菌病混合感染的诊治

鸡新城疫是由鸡新城疫病毒引起的一种急性、高度接触性传染病,致死率较高。目前,我国普遍采用以新城疫疫苗接种为主的综合防控措施,能够在很大程度上控制该病的大规模流行。鸡大肠杆菌病是由大肠埃希菌感染引起的传染病,多个血清型的大肠埃希菌是多种动物肠道内的常驻菌,因此其分布极为广泛,致病率也较高,并且多与其他疫病混合感染。通过开展病死鸡的病理变化检查、实验室检验以及分离菌株的药物敏感性试验,对临床接诊的鸡新城疫及大肠杆菌混合感染病例进行诊断并提出综合防控措施,以期为兽医临床2种疾病的防控提供有益参考。     

猪细小病毒和猪伪狂犬病病毒混合感染的诊治

2009年9月,贵州省贵阳市某养猪场暴发了以母猪流产和仔猪发热、神经症状为特征的疾病,经过流行病学调查、临床症状观察、病理解剖及实验室诊断,诊断为猪细小病毒、猪伪狂犬病病毒混合感染。通过采取综合有效的防制措施,使猪场疫情得到及时、有效的控制。     

一例猪附红细胞体与弓形体混合感染的诊治

附红细胞体病是由立克次氏体引起的一种散在的热性、溶血性入畜共患传染病，病猪以急性黄疸性贫血和发热为特征。弓形体病是由刚地弓形虫在多种动物和入的有核细胞内寄生引起的一种入畜共患的原虫病。本文通过对某猪场发生猪附红细胞体与弓形体混合感染的诊治，从发病情况、临床症状、剖检变化、实验室诊断、治疗等方面对该病进行了阐述。