An outbreak of bacillary haemoglobinuria in sheep in India

Randhawa, S. S.; Sharma, Diwakar; Randhawa, C. S.; Gill, B. S.; Brar, R. S.; Singh, Joginder

doi:10.1007/bf02236332

Cited by 15 publications

(7 citation statements)

References 2 publications

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“…The most frequent causes of blood loss anemia per ruminant species are presented in Table 1 Hemolysis also results from toxins produced by Clostridium perfringens type D causing yellow lamb disease (Gianniti et al, 2014) and Clostridium hemolyticum that causes bacillary hemoglobinuria in sheep and cows (Tagaki et al, 2009;Randhawa et al, 1995).…”

Section: Hemorrhagic Anemiamentioning

confidence: 99%

Diagnostic approach of anemia in ruminants

Katsogiannou

Athanasiou

Christodoulopoulos

et al. 2018

J Hellenic Vet Med Soc

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Anemia in ruminants is an abnormal condition characterized by the decrease of the hematocrit (Packed Cell Volume, PCV), the mass of erythrocytes (Red Blood Cells, RBCs) and/or hemoglobin. Anemia is classified as hemolytic, hemorrhagic or anemia caused by the decreased production of erythrocytes; the first two categories are characterized by a regenerative response. Hemorrhagic anemia can be caused by ectoparasites or parasites of the gastrointestinal system, hemorrhagic bowel syndrome, abomasal ulcers, vena cava thrombosis as well as from the genitourinary tract. In addition, primary and secondary hemostatic disorders can be accompanied by hemorrhagic anemia. Hemoparasites, toxins produced from Clostridium perfringens type D and Clostridium hemolyticum and leptospirosis are some of the causes of hemolytic anemia. Furthermore, certain plants, drugs or heavy metals and lack of certain trace elements can cause hemolysis. Immune-mediated hemolytic anemia has also been reported in ruminants. The reduced production of erythrocytes can be caused by deficiency of vitamin B12 or iron, as well as by chronic diseases. Pathologic conditions of bone marrow like inflammatory or neoplastic cells filtration and hypoplasia or aplasia of bone marrow are related to reduced production of erythrocytes. After laboratory confirmation by complete blood count analysis, history taking, clinical examination of the animal and specific test depending on the case, are required for the diagnostic approach of anemia and especially for etiological diagnosis. Tachycardia, tachypnea, icterus, mucosal pallor as well as specific symptoms of the underlying disease are observed during the clinical examination of the animal. FAMACHA technique is widely used for the clinical diagnosis and the assessment of the severity of anemia. With respect to complete blood count, apart from the hematocrit, hemoglobin concentration, erythrocytes indices as Mean Corpuscular Volume (MCV) and Mean Corpuscular Hemoglobin Concentration (MCHC) are contributing to the classification of anemia. The size and the shape of the erythrocytes, the appearance of inclusions and reticulocytes, which are indicative of regenerative anemia, are evaluated in blood smear. Rarely, examination of bone marrow is carried out, for the differentiation of anemia as regenerative or non-regenerative. In particular, the confirmation of immune- mediate anemia is based on Coomb’s test for the detection of autoagglutination. Except from hemorrhage, blood loss is detected at urinalysis or feces microscopy for the presence of blood and/or parasites. Finally, serological and molecular techniques for the detection of infectious agents, as well as specific toxicological analysis are performed in various biological materials.

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Section: Hemorrhagic Anemiamentioning

confidence: 99%

Diagnostic approach of anemia in ruminants

Katsogiannou

Athanasiou

Christodoulopoulos

et al. 2018

J Hellenic Vet Med Soc

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“…However, sporadic cases have been reported in sheep, pigs, horses, and an elk. 11,45,50,57,59 Etiology C. haemolyticum is a large, soil-borne, anaerobic, gram-positive, sporulating rod. This bacterium is extremely fastidious, and it is known as one of the strictest pathogenic anaerobes.…”

Section: Preventionmentioning

confidence: 99%

Pathobiology and diagnosis of clostridial hepatitis in animals

Navarro

Uzal

2019

J VET Diagn Invest

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Clostridia can cause hepatic damage in domestic livestock, and wild and laboratory animals. Clostridium novyi type B causes infectious necrotic hepatitis (INH) in sheep and less frequently in other species. Spores of C. novyi type B can be present in soil; after ingestion, they reach the liver via portal circulation where they persist in phagocytic cells. Following liver damage, frequently caused by migrating parasites, local anaerobic conditions allow germination of the clostridial spores and production of toxins. C. novyi type B alpha toxin causes necrotizing hepatitis and extensive edema, congestion, and hemorrhage in multiple organs. Clostridium haemolyticum causes bacillary hemoglobinuria (BH) in cattle, sheep, and rarely, horses. Beta toxin is the main virulence factor of C. haemolyticum, causing hepatic necrosis and hemolysis. Clostridium piliforme, the causal agent of Tyzzer disease (TD), is the only gram-negative and obligate intracellular pathogenic clostridia. TD occurs in multiple species, but it is more frequent in foals, lagomorphs, and laboratory animals. The mode of transmission is fecal–oral, with ingestion of spores from a fecal-contaminated environment. In affected animals, C. piliforme proliferates in the intestinal mucosa, resulting in necrosis, and then disseminates to the liver and other organs. Virulence factors for this microorganism have not been identified, to date. Given the peracute or acute nature of clostridial hepatitis in animals, treatment is rarely effective. However, INH and BH can be prevented, and should be controlled by vaccination and control of liver flukes. To date, no vaccine is available to prevent TD.

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“…Bacillary hemoglobinuria (BH), or red water, is a disease caused by Clostridium hemolyticum , previously known as C. novyi type D. The disease affects cattle, and has occasionally been reported in sheep and goats [270,271,272,273]. Human infections are extremely rare [274,275].…”

Section: Clostridium Hemolyticummentioning

confidence: 99%

Vaccine Production to Protect Animals Against Pathogenic Clostridia

Zaragoza

Orellana

Moonen³

et al. 2019

Toxins

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Clostridium is a broad genus of anaerobic, spore-forming, rod-shaped, Gram-positive bacteria that can be found in different environments all around the world. The genus includes human and animal pathogens that produce potent exotoxins that cause rapid and potentially fatal diseases responsible for countless human casualties and billion-dollar annual loss to the agricultural sector. Diseases include botulism, tetanus, enterotoxemia, gas gangrene, necrotic enteritis, pseudomembranous colitis, blackleg, and black disease, which are caused by pathogenic Clostridium. Due to their ability to sporulate, they cannot be eradicated from the environment. As such, immunization with toxoid or bacterin-toxoid vaccines is the only protective method against infection. Toxins recovered from Clostridium cultures are inactivated to form toxoids, which are then formulated into multivalent vaccines. This review discusses the toxins, diseases, and toxoid production processes of the most common pathogenic Clostridium species, including Clostridium botulinum, Clostridium tetani, Clostridium perfringens, Clostridium chauvoei, Clostridium septicum, Clostridium novyi and Clostridium hemolyticum.

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An outbreak of bacillary haemoglobinuria in sheep in India

Cited by 15 publications

References 2 publications

Diagnostic approach of anemia in ruminants

Diagnostic approach of anemia in ruminants

Pathobiology and diagnosis of clostridial hepatitis in animals

Vaccine Production to Protect Animals Against Pathogenic Clostridia

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