Advances in Animal and Veterinary Sciences

Research Article
Adv. Anim. Vet. Sci. 2 (3S): 12 - 15. Special Issue-3 (Approaches in Diagnosis and Management of Diseases of Livestock and Poultry)
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Shivasharanappa Nayakwadi1*, Vivek Kumar Gupta1, Rajveer Singh Pawaiya1, Gundallahallai Bayyappa Manjunatha Reddy2, Ashok kumar1, Sukhadeo B Barbuddhe3
1Division of Animal Health, Central Institute for Research on Goats (CIRG), Makhdoom, Farah– 281122, Mathura; 2National Institute of Veterinary Epidemiology and Disease Informatics (NIVEDI), Bangaluru; 3ICAR Research complex, Goa.
*Corresponding author:

Caprine listeriosis caused by Listeria monocytogenes is a disease of zoonotic importance. Listeriosis involves central nervous system of goat which is manifested in various clinical signs. A total of 69 brain samples from different breeds of goat collected from the post–mortem cases and slaughter house were examined for the presence of pathogenic Listeria. Twenty one brain samples were found positive for listeria by cultural, biochemical, phenotypic and genotypic characteristics. Among these, nine isolates were characterized as Listeria monocytogenes. The isolates were positive for the hly and actA virulence genes by PCR assay. All the isolates belonged to 4b, 4d and 4e serovar group using multiplex PCR based serotyping. No characteristic pathological lesions of listeriosis have been found in the brain. The isolation of L. monocytogenes is important with regard to food safety and public health, representing a possible link between the animals, environment and human infection.

Key Words: Caprine listeriosis, Listeria monocytogenes, Goat brain, Virulence genes