Outbreak of caseous lymphadenitis in an organized goat farm
S Muthukumar, B Samuel Masilamoni Ronald, S Hemalatha, S Meenakshi Sundram and M Sughanthi
The present investigation was carried out in an organized goat farm with more than 500 Tellicherry and 100 Osmanabadi breedable does at Kancheepuram district, Tamil Nadu during 2013. Out of these 43 animals were found with swollen lymph nodes in the head (parotid and submandibular) and neck, shoulder (prescapular), flank (prefemoral) and udder (supramammary). Infected lymph nodes grow to become larger abscesses ranging in size from a grapefruit to an egg. The contents are thick green/yellow cheese-like pus; in short-haired goats these swollen glands are obvious and clearly visible. This infection was recorded widely in goats between the ages of one week kid to an adult stage goat. From the clinical sign and the contagious nature, it was tentatively diagnosed as Caseous Lymphadenitis (CLA). The consistency of the swollen mass was hard, non movable in the beginning stage, when it got open white creamy purulent discharge was noticed. Samples were collected by collecting aseptically from the lesion and cultured in the culture medium. Laboratory culture results confirm the causative organism as Corynebacterium pseudotuberculosis.