Hepatic coccidiosis in red lechwe (<i>Kobus leche leche</i>)

Wessels, Julie; Wessels, Mark; Wood, R.; Quayle, Joseph R.

doi:10.1136/vr.d2191

Cited by 5 publications

(5 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Coccidiosis caused by an intestinal apicomplexan protozoan parasite of the genus Eimeria, is an economically important, highly contagious, fatal sporozoal infection seriously impairing the growth of infected animals and birds Pangasa et al, 2007;Rehman et al, 2011;Cavalcante et al, 2012). It is one of the major protozoal diseases commonly observed worldwide in domestic rabbits (Oryctolagus cuniculus) (Wessels et al, 2011) kept on the ground compared to those reared in cages. Rabbit coccidiosis has two anatomic forms: hepatic caused by E. stiedae and intestinal caused by other fourteen Eimeria species (Li and Ooi, 2009).…”

Section: Introductionmentioning

confidence: 99%

Clinico-pathologic observations of spontaneous hepatic coccidiosis in broiler rabbits maintained in Bannerghatta biological park in Karnataka state of India

Manjunatha¹,

Rout²,

Sujay³

et al. 2019

IJAR

View full text Add to dashboard Cite

The present study reports the clinico-pathologic changes observed in spontaneous hepatic coccidiosis caused by Eimeria stiedae in rabbits at Bannerghatta Biological Park (BBP) in Karnataka state of India. The clinical signs observed in the affected rabbits included sudden death, stunted growth, anorexia, weight loss, diarrhoea and abdominal pain. Increased liver enzymes and bilirubin was noticed upon biochemical examination. At necropsy, lesions included grossly enlarged liver (hepatomegaly) with presence of discrete yellowish-white nodules ranging from 1mm to 5mm size throughout the parenchyma containing a thick creamy white fluid. Faecal sample examination demonstrated the presence of Eimeria oocyts. The impression smears from the liver and intestinal mucosa also showed Eimeria oocysts, degenerative changes, necrotic cells and mononuclear cell aggregation to form oocyst granuloma. Histological observation revealed distension of bile duct, hyperplasia of epithelium along with numerous coccidian oocysts at the centre. Granulomatous tissues were observed to have encircled the bile duct with infiltration of inflammatory cells. Microscopic examination of exudates from liver also revealed numerous oocysts of E. stiedae. Multiple areas of coagulative necrosis of hepatic cells surrounded with inflammatory cells were also found.

show abstract

Section: Introductionmentioning

confidence: 99%

Clinico-pathologic observations of spontaneous hepatic coccidiosis in broiler rabbits maintained in Bannerghatta biological park in Karnataka state of India

Manjunatha¹,

Rout²,

Sujay³

et al. 2019

IJAR

View full text Add to dashboard Cite

show abstract

“…Coccidiosis is a common and worldwide protozoal disease of domestic rabbits but only rarely reported in other mammals (1). Kids are most susceptible; however, infected adults become carriers.…”

Section: Introductionmentioning

confidence: 99%

Pathological study of Hepatic coccidiosis in naturally infected rabbits

Naimi

Khalaf²,

Tano³

et al. 2012

QJVMS

View full text Add to dashboard Cite

Thirty young domesticated rabbits (age 2-2.5 mo) of sexes showed clinical signs of anorexia, debilitation, diarrhea, icterus, rough hair coat and pendulous abdomen with hepatomegaly. Fecal samples were collected for demonstrated the presence of oocyts. Postmortem examination revealed presence of discrete yellowish-white nodules of 1mm to 2 cm size on the surface and throughout the parenchyma containing a thick creamy white fluid. The histopathological changes showed biliary hyperplasia with different developmental stages of Eimeria stiedae in the epithelial cells, cholangitis and peribiliary fibrosis with newly formed bile ductules, severe congestion and dilation of central veins and sinusoids with disruption hemorrhagic areas. The hepatocytes showed degenerative changes to necrosis with areas of fibrosis and mononuclear cell aggregation, obstructive jaundice and a tendency to form oocyst granuloma. In conclusion hepatic coccidiosis lead to severe pathological changes both in bile ducts and liver parenchyma especially in young animals.

show abstract

“…Naturally infected cranes did not demonstrate clinical signs (Novilla & Carpenter, 2004). Gross hepatic changes associated with coccidial lesions in the present study on the kiwi are typical of those seen in hepatic coccidial infections in other avian and mammalian host species (Critchley et al, 1986;Reece, 1989;Dai et al, 1991;Canfield & Hartley, 1992;Pakandl, 2009;O'Brien et al, 2011;Wessels et al, 2011). Most reports of hepatobiliary coccidiosis in other host species, including the magpie-lark and experimentally immunosuppressed chickens, occurred within the biliary duct epithelium (Clark, 1970;Long, 1970Long, , 1971Lee & Long, 1972;Levine & Ivens, 1972;Collins et al, 1988;Reece, 1989;Dai et al, 1991;Brunnert et al, 1992;Schafer et al, 1995;Williams et al, 1996;Pakandl, 2009).…”

Section: Discussionmentioning

confidence: 52%

Extra-intestinal coccidiosis in the kiwi (Apteryxspp.)

et al. 2013

View full text Add to dashboard Cite

Despite significant conservation intervention, the kiwi (Apteryx spp.) is in serious population decline. To increase survival in the wild, conservation management includes rearing of young birds in captivity, safe from introduced mammalian predators. However, an increase in density of immunologically naïve kiwi increases the risk of exposure to disease, including coccidia. Intestinal coccidiosis has recently been described in the kiwi, and although extra-intestinal coccidiosis was first recognized in kiwi in 1978, very little is known about this disease entity. This study used archived histological tissues and reports from routine necropsies to describe the pathology of naturally occurring extra-intestinal coccidiosis. At least 4.5% of all kiwi necropsied during 1991 to 2011 (n0558) were affected by extra-intestinal coccidiosis, and it is estimated that it caused death in 0.9 to 1.2% of kiwi in the study group. Four forms were recognized: renal, hepatic, and, less commonly, splenic and pulmonary. At necropsy, renal coccidiosis was associated with miliary white streaks and foci through the kidneys, renomegaly, and renal pallor or congestion. Renal meronts and gametocytes were confined to the distal convoluted tubules and collecting ducts, and were associated with renal tubular necrosis and tubular obstruction. Hepatic miliary pinpoint foci were present throughout the hepatic parenchyma associated microscopically with macromeronts measuring 304 )227 mm. In two cases, clusters of splenic meronts were identified, and a similar lesion was identified in the pulmonary interstitium of another case. Juvenile, captive kiwi were most often affected with extra-intestinal coccidiosis, illustrating an increased expression of disease with population manipulation for conservation purposes.

show abstract

Hepatic coccidiosis in red lechwe (Kobus leche leche)

Cited by 5 publications

References 4 publications

Clinico-pathologic observations of spontaneous hepatic coccidiosis in broiler rabbits maintained in Bannerghatta biological park in Karnataka state of India

Clinico-pathologic observations of spontaneous hepatic coccidiosis in broiler rabbits maintained in Bannerghatta biological park in Karnataka state of India

Pathological study of Hepatic coccidiosis in naturally infected rabbits

Extra-intestinal coccidiosis in the kiwi (Apteryxspp.)

Contact Info

Product

Resources

About