Marek’s disease is the most common of the lymphoproliferative diseases in chicken caused by cell associated herpes virus. This disease is characterised by a mononuclear infiltration of peripheral nerves and also the gonad, iris, various viscera, muscle and skin. Marek’s Disease is of immense economic significance to the poultry industry.
Newcastle disease has been prevalent in India since 1928. The virulent strains of this virus have caused extensive damage to the poultry flocks leading to heavy mortality ( even upto 100% ) and production slumps which cost the farmers their means of income and livelihood.
Infectious Bursal Disease
The disease was first recognized in poultry in 1957, in the county town of Gumboro, USA. Later in 1962, Cosgrove, Winterfield, Hitchner and others carried out intensive research work and isolated infective viral agent affecting Bursa of Fabricius.
Avian Infectious Bronchitis Disease
Avain Infectious Bronchitis under the corona virus group is an acute, highly contagious respiratory disease of chicken characterised by tracheal rales, coughing and sneezing.
Fowl Pox is caused by the pox group of virus. Affected birds reveal various clinical symptoms such as warty growth on the comb, wattles and general system is upset.
Fowl Cholera is a contagious disease affecting poultry birds and is caused by pasteurella multocida var avium organisms. Signs that often occur are fever, off feeding, ruffled feathers, muscous discharge from the mouth, diarrhoea and increased respiratory rates.
Infectious Coryza is an acute respiratory disease of chicken caused by Hemopilus Paragallinarum organisms. All ages are susceptible to the infection but the effect is generally more severe in growing adult flocks.
Salmonellosis is an acute and infectious disease of all age group of birds causing severe economic loss by virtue of early chick mortality & detorioration of quality of meat. Loss of production and.Hatchability is notable in breeders &layers. The common serotypes are S. Gallinarum, S. Typhimurium and S. Enteritidis and can be controlled effectively by strict biosecurity measures and Ventriâ€™s polyvalent vaccine.