Study on Sheep Disease and Its Economic Impact

Sample size: 274 publication 10 minutes Evidence: high

Author Information

Author(s): El Khalfaoui Nora, El Amiri Bouchra, Rahim Abdellatif, Chentouf Mouad, Raes Marianne, Marcotty Tanguy, Kirschvink Nathalie, Buczinski Sébastien

Primary Institution: Namur Research Institute for Life Sciences NARILIS, University of Namur, Belgium

Hypothesis

How do season, age, sex, body score, and shearing affect the clinical incidence of caseous lymphadenitis in sheep?

Conclusion

The study found that both season and age significantly affect the incidence of caseous lymphadenitis in sheep, with higher rates observed in young animals during spring and summer.

Supporting Evidence

67.5% of the monitored animals developed superficial CL abscesses.
The risk ratio of superficial CL was significantly higher between April and September.
Old sheep had a significantly lower risk of CL compared to lambs.
Abscess relapse was significantly lower in old sheep than in lambs.
Season and age were significant factors affecting CL incidence.

Takeaway

This study shows that young sheep get sick more often with a disease called caseous lymphadenitis, especially in the warmer months when they are kept indoors.

Methodology

A longitudinal study followed 274 clinically healthy sheep over 12 months, examining them every two months for abscesses and recording various factors.