The Relevance of Caseous Lymphadenitis as a Cause of Culling in Adult Sheep

Abstract

Four hundred and ninety-eight culled sheep received at the Ruminant Clinical Service of the Veterinary Faculty of Zaragoza, Spain, were examined in life and after humanitarian sacrifice in order to reach the final diagnosis of the cause of culling and to evaluate the presence of caseous lymphadenitis (CLA) lesions. One hundred and forty-seven of the 498 studied animals (29.52%) showed CLA compatible lesions that were subsequently confirmed by Corynebacterium pseudotuberculosis isolation. One hundred and seven of the 147 CLA affected animals presenting the visceral clinical form of the disease (72.79%), while only 32 animals were affected by the superficial form (21.77%). In addition, eight animals were found to be affected in both the visceral and the superficial presentations (5.44%). Eighty-four of the 147 CLA-affected animals (57.14%) did not show any concurrent disease, considering, in this case, CLA the main cause of culling (84/498: 16.87%). In the superficial presentation, the retropharyngeal lymph node, as a sole lesion, was the most frequently affected (13/32: 40.63%). Further, in the visceral form of the disease, 85.06% of the affected animals had the lesions located in the respiratory system (91/107: 85.06%). CLA was revealed as an important cause of culling in sheep production.

Cytopathological and bacteriological studies on caseous lymphadenitis in cattle slaughtered at Bishoftu municipal abattoir, Ethiopia

“…CLA is a chronic infectious disease of a wide range of mammalian species in the world, including Ethiopia, characterized by the enlargement of one or more lymph nodes (Ali et al, 2016;Belchior et al, 2009;Braga, 2007;Ruiz et al, 2020). This study reported a single case of CLA out of 30 cattle slaughtered in the Bishoftu municipal abat- 2020) and Zeru and Kahsay (2014) that recorded a high occurrence of CLA in small ruminants.…”

The Microbial Community in the Abscess Underneath the Skin of Goats

“…Among the remaining microorganisms and parasites, many are more likely to be animal The main symptom of pseudotuberculosis is the enlarged and firm lymph nodes with purulent lymphadenitis, [4][5][6] while the subcutaneous abscess in the study was usually free of lymph node lesions. Lactococcus garvieae was first found in bovine mastitis, 7 and can also be isolated from diseased fish.…”

A Review of the Paratuberculosis in Iran

“…e prevalence of the disease in the individual level of dairy cows in Australia and the US is 22% and 75.8%, respectively. [23,24] e prevalence of the disease in the sheep and goat population in Europe is estimated at 72.79%. [23] e situation of JD prevalence in Iran showed higher infection compare to developed countries that have regular monitoring schedule and control in herds' level.…”

“…[23,24] e prevalence of the disease in the sheep and goat population in Europe is estimated at 72.79%. [23] e situation of JD prevalence in Iran showed higher infection compare to developed countries that have regular monitoring schedule and control in herds' level. Herd reservoir milk has 59% [25] and individual cow milk has 30%.…”