Black Head in Poultry

Black Head (Histomonosis, Enterohepatitis) Cause It is caused by a protozoan parasite Histomonas meleagridis. Transmission Infected water, feed or droppings play a role in transmission of the protozoa (direct transmission). The infected eggs of the caecal worm Heterakis gallinarum is also responsible for  the transmission (indirect transmission). Species affected It affects both the chickens, tu [...]

Coccidiosis in Poultry

Coccidiosis is complex disease of intestinal tract caused by an intracellular protozoan parasite. Etiology Eimeria is responsible for coccidiosis which is intracellular protozoan parasite of intestinal tract. The economically important species are E. acervulina, E. maxima, E. tenella, E. necatrix and E. brunette Transmission Intake of fecal contaminated food is the mode of transmission. The feces containin [...]

Fowl cholera

Fowl cholera is a bacterial disease of birds caused by organism Pasteurella multocida, affecting birds of 6 weeks old and above. It is a serious and highly contagious disease which can range from acute septicemia to chronic and localized infections and the morbidity and mortality may be up to 100%. The disease gets transmitted via nasal exudates, feces, contaminated soil, equipment, and people. Clinical findings vary greatly depending on the c [...]

Aspergillosis/ Brooder’s Pneumonia

Aspergillosis/ Brooder’s Pneumonia Aspergillosis is the fungal disease caused by Aspergillus fumigatus in poultry birds. In wet and cold season due to the high humidity and insufficient sunlight, feed or litter dampens is common, thus creating a favorable environment for fungal growth in poultry environment. The spores of aspergillus are inhaled by birds and these spores subsequently develop into lesions filling the lungs, thus causing res [...]

MG (Mycoplasma gallisepticum) IN Poultry

Mycoplasma gallisepticum (MG) is a main causative agent of complicated chronic respiratory disease (CCRD). MG affects also the egg production in chickens and results in reduced feed conversion efficiency, condemnation and downgrading of broilers carcasses at slaughter because of airsacculitis. Consequently, MG infection increases medication costs and decreases hatchability and quality of one day old chicks. Different types of vaccines are [...]


Inclusion body hepatitis (IBH) is an acute liver disease caused by fowl adenovirus (FAdV). It affects chickens of all age groups worldwide. IBH is a frequent problem for the commercial poultry industry, specifically seen in broilers and broiler breeder flocks. Affected flocks are often co-infected with other immunosuppressive viruses such as infectious bursal disease virus or chicken infectious anemia virus which predispose birds to developing [...]

Egg Drop Symptoms (EDS)

EGG DROP SYNDROME (EDS) IN COMMERCIAL LAYER POULTRY DR. RAJESH KUMAR SINGH, LIVESTOCK & POULTRY CONSULTANT JAMSHEDPUR, JHARKHAND, INDIA 9431309542, INTRODUCTION Egg drop syndrome is a viral disease that results in decreased egg production in an otherwise healthy flock. The outbreaks can last from 4–10 weeks and can result in a 5–50% drop in egg production. Egg drop syndrome virus can be t [...]

Avian Influenza (Bird Flu)

Highly infectious viral disease of avian species. H5N1 is a particular strain of highly pathogenic avian influenza. Disease Detail Avian Influenza Avian Influenza (AI) is a viral disease caused by virus belonging to family Orthomyxoviridae and genus Influenza virus serotype A. The virus is worldwide in distribution. It occurs in many forms form asymptomatic to respiratory disease and a drop in egg production, to systemic disease wi [...]

Newcastle Disease (ND)

Viral disease of domestic poultry and wild birds, which is characterized by gastrointestinal, respiratory and nervous signs. Disease Details Introduction: Newcastle disease (ND) is a highly contagious viral disease affecting poultry of all ages. Affected species include chickens, turkeys, pigeons and ducks. It is listed in OIE (Office International des Epizooties) list of diseases as per its severe nature. The virus involved is Paramy [...]

Infectious bursal disease (IBD)

Infectious Bursal Disease (Gumboro, IBD, infectious bursitis, infectious avian nephrosis) A highly contagious and fatal viral disease mostly affecting young birds aged between 3-6 weeks, caused by RNA virus belonging to the family Birnaviridae. The disease attacks the bursal component of the immune system resulting in immunosuppression due to the destruction of immature B lymphocytes and thereby increases susceptibility to secondary infect [...]

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