Abattoir survey on caseous lymphadenitis in sheep and goats in Tanta, Egypt

What is it about?

The prevalence of CLA among slaughtered animals was 26.92% and 25.05% on the basis of gross and bacteriological examination, respectively. On the basis of gross examination, the prevalence was 33.23% and 10.74% among slaughtered sheep and goats, respectively. Whereas on the basis of bacteriological examination, the prevalence was 32.65% and 5.55% in sheep and goats, respectively. The prevalence of CLA was significantly higher in slaughtered females than slaughtered males (p < 0.0001; OR: 22.93; CI 95%: 15.71–33.46). Statistically, the prevalence of CLA differed among different age groups; the higher prevalence was recorded in animals of the age group over 2 years (51.35%) than those from 1 to 2 years (8.84%) (p < 0.0001; OR: 10.98; CI 95%: 7.611–15.58) and under 1 year (7.5%) (p < 0.0001; OR: 13.2; CI 95%: 3.944–43.00).

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Why is it important?

Corynebacterium pseudotuberculosis could be isolated from the died guinea pigs. In conclusion, CLA is more prevalent in slaughtered sheep than slaughtered goats and in females than males. Also, it was observed the increase of CLA prevalence with the progress of animal age. Therefore, beside early detection and culling of infected animals, strict hygienic care during shearing process is highly recommended.

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