中西结合治疗犬肠道出血综合症

犬肠道出血综合症是一种临床上以突然呕吐,排胶冻样黏液性血便,迅速死亡为主要特征的急性消化道传染病.本病病因目前尚存异议,有人认为本病的发生与犬体的免疫机能有关;有的认为本病是犬对细菌内毒素的变态反应或过敏反应所致;也有的认为本病可能与梭状芽胞杆菌有关.     

鸡呼吸道疾病综合症的防治技术

<正>鸡呼吸道疾病综合征又称多因子呼吸道病,是由传染性因子,营养缺乏,饲养管理不良等多因素共同作用的结果。该症候群对养鸡企业的危害有:引起发病鸡的死亡增加、生长发育迟滞、生产性能下降、饲料报酬率降低以及疫苗、药物和人工费用增加等带来直接和间接的经济损失。鸡呼吸道疾病综合症是一种复杂的疾病,对此应采取综合性的防治措施,采取早发现、早治疗的方式,还要进行综合性的预防。1鸡呼吸道疾病综合症发病原因     

肉鸡肠道疾病综合症的防制

近年来,笔者通过对肉鸡养殖场的观察发现,肉鸡2周龄后开始出现肠道疾病的初期症状,尤其是在密度大,湿度大,通风不良,卫生条件差的鸡场更是多发。(一)症状病鸡初期症状不是很明显,只是个别鸡粪便稀,不     

鸡各种综合症的防治

近年来鸡的各种综合症发病率明显升高，严重危害养鸡业的发展。这些综合症必须要引起我们的重视，认真分析原因，采取有力的防治措施，控制病害的进一步发展和流行。     

鸡脂肪肝综合症

脂肪肝综合症是由于营养障碍、内分泌失调、脂肪代谢紊乱等原因而引起的脂肪沉积增多的一种特殊类型的脂肪肝，亦称脂肪肝出血症。本病是笼养鸡的多发病，尤其是重型鸡及肥胖鸡易发。１病因由于脂肪的合成代谢和分解代谢发生紊乱所致。１．１由于饲喂高能（玉米、麸类等）、低蛋白的日粮或能量利用减少造成。高碳水化合物只有在鸡的肝内转化为脂肪，再与蛋白质结合成脂蛋白才能从肝内移出，若脂肪多，蛋白少，则过多的脂肪会沉积于肝内。当日粮中玉米达３０％左右时，常发生脂肪肝。１．２与某些亲脂肪性因子、蛋氨酸、胆碱、叶酸、维生素B…     

猪呼吸道疾病综合症的防治

猪呼吸道病综合症是猪呼吸系统疾病的总称,简称为PRDC,通常是由细菌、病毒、支原体、寄生虫、饲养管理及环境应激等多种因素相互作用所引起的猪的群发性疾病。PRDC主要危害保育和生长发育猪,病猪表现结膜炎、眼水肿、分泌物增多、发热、食欲不振或食欲废绝、呼吸困难、气喘、腹     

猪呼吸道疾病综合症的综合防制

猪呼吸道疾病综合症(PRDC)是一种多因子性疾病，即由病毒性、细菌性和非病原性，如温和型猪瘟、支原体肺炎、蓝耳病毒(PRRS)、伪狂犬病毒、猪圆环病毒、猪流感病毒、支气管败血性波氏杆菌等原发病原和猪链球菌属2型、副猪嗜血杆菌病、猪肺疫、放线杆菌胸膜肺炎以及猪蛔虫等继发病原以及不良的饲养管理条件和易感猪群等综合因素相互作用而引起的疾病综合症。猪以出现咳嗽、呼吸困难等上呼吸道症状     

鸡脂肪肝综合症的防治

在加强鸡脂肪肝综合症的治疗中,要针对存在的相关病因进行,同时,为了更好地提升经济效益,要加强对鸡脂肪肝综合症的治疗研究。本文围绕鸡脂肪肝综合症产生的病因进行分析,并对其表现症状进行概括,从而探讨对鸡脂肪肝综合症的预防和治疗方法。     

Immunology of the porcine respiratory disease complex.

PRDC is a multifactorial respiratory syndrome that includes several respiratory pathogens. As can be observed in this article, although the pathogenesis of some of the respiratory pathogens of pigs is fairly well defined, the host response and the immune response necessary to control the pathogen often remain unclear. As our ability to evaluate the porcine immune system and its ability to respond to disease improves, the knowledge of how each of these respiratory pathogens alter and evade the immune system will increase. The pathogens most commonly isolated from pigs with clinical signs of PRDC either infect the cells of the immune system or induce significant immunopathology. Thus, PRRSV and M. hyopneumoniae, the two most common pathogens associated with PRDC, alter the ability of the respiratory immune system to respond to their presence and the presence of other pathogens. By changing the respiratory immune system, these two common pathogens increase the susceptibility to the many other pathogens associated with PRDC. As we learn more about the pathogens of the respiratory system, their interactions with each other, and the mechanisms by which they modulate the immune system, our ability to develop effective control measures will improve.     

呼吸道疾病复合症严重降低肉鸡生产的效率

当代肉鸡比其“前辈”面临着更严重的来自呼吸道疾病的威胁,因而需要对它们进行免疫接种以帮助它们实现快速生长。要制定出有效的免疫接种方案,就必须考虑到每一鸡群中各种特有因素之间的相互作用。     

Hemorrhagic syndrome-like disease in calves with bovine viral diarrhea and mucosal disease complex

BACKGROUND: Bovine viral diarrhea virus (BVDV) infection is one of the causes of hemorrhagic diathesis in cattle but there have been limited field studies about that condition. HYPOTHESIS: To identify the cause of hemorrhagic diathesis in calves and describe its clinical findings. ANIMALS: Five calves from a farm with 150 dairy cows. METHODS: Clinical examination of the calves was performed. After blood samples were obtained from 2 calves, whole blood, sera, and leukocyte samples were used for hematologic and hemostatic examinations, neutralization tests, virus isolation, and viral genome sequencing. RESULTS: The calves had moderate pyrexia, dullness, serous or mucous nasal discharge, and petechial and ecchymotic hemorrhages on mucosal surfaces. Severe thrombocytopenia and anemia were identified on hematologic examinations. All calves died within 10 days of the onset of clinical signs. Virologic examinations identified BVDV as the causative agent of the disease. CONCLUSIONS AND CLINICAL IMPORTANCE: This paper identifies a hemorrhagic syndrome-like disease in calves with bovine viral diarrhea and mucosal disease complex in Turkey.     

The immunology of the bovine respiratory disease complex.

The bovine respiratory disease complex continues to be an economically important syndrome in an era when immunologic control is likely to become increasingly important. Recent studies have yielded a better understanding of the interaction, at the molecular level, of various pathogens with the bovine immune system. Improved challenge models for important viral pathogens such as bovine viral diarrhea virus and bovine respiratory syncytial virus have provided evidence of the efficacy of immune responses stimulated by vaccination. This article highlights recent advances in understanding of the role of the immune response in the pathogenesis and prophylaxis of bovine respiratory disease complex.     

Immune evasion by pathogens of bovine respiratory disease complex

Bovine respiratory tract disease is a multi-factorial disease complex involving several viruses and bacteria. Viruses that play prominent roles in causing the bovine respiratory disease complex include bovine herpesvirus-1, bovine respiratory syncytial virus, bovine viral diarrhea virus and parinfluenza-3 virus. Bacteria that play prominent roles in this disease complex are Mannheimia haemolytica and Mycoplasma bovis. Other bacteria that infect the bovine respiratory tract of cattle are Histophilus (Haemophilus) somni and Pasteurella multocida. Frequently, severe respiratory tract disease in cattle is associated with concurrent infections of these pathogens. Like other pathogens, the viral and bacterial pathogens of this disease complex have co-evolved with their hosts over millions of years. As much as the hosts have diversified and fine-tuned the components of their immune system, the pathogens have also evolved diverse and sophisticated strategies to evade the host immune responses. These pathogens have developed intricate mechanisms to thwart both the innate and adaptive arms of the immune responses of their hosts. This review presents an overview of the strategies by which the pathogens suppress host immune responses, as well as the strategies by which the pathogens modify themselves or their locations in the host to evade host immune responses. These immune evasion strategies likely contribute to the failure of currently-available vaccines to provide complete protection to cattle against these pathogens.     

Idiopathic complex polysaccharide storage disease in an abyssinian cat

A glycogen storage disease affecting primarily the skeletal muscle and, to a lesser degree, the cardiac muscle, spinal cord, and brain was diagnosed in a 10-year-old neutered Abyssinian cat with a 4-year history of paresis progressing to acute paralysis. Microscopically, these tissues contained inclusions that were pale basophilic in hematoxylin and eosin-stained slides, diastase resistant, periodic acid-Schiff positive, and blue-to-almost black with iodine stain. By transmission electron microscopy, the inclusions consisted of cytosolic, usually sharply demarcated, nonmembrane-bound deposits of finely granular and filamentous material. On the basis of the structural and histochemical staining characteristics, the inclusions were believed to be aggregates of abnormally stored, unbranched glycogen. A defect in glucose metabolism is suspected to be the underlying pathologic process, but an exact cause remains elusive.