BACKGROUND: Mycoplasma gallisepticum (MG) and Mycoplasma synoviae (MS) are the most important and pathogenic mycoplasma in chicken production. The tendency of avian mycoplasma for interaction with other pathogen is well-known. Interaction within several disease-producing factors in respiratory tract exacerbate the disease and known as multicausal respiratory disease. OBJECTIVES: In recent years...

Broiler transport coops become soiled with feces during use. When this fecal matter contains Campylobacter, the result can be cross-contamination of subsequent flocks that were previously free of this important human pathogen. Because washing and sanitizing coops requires large amounts of water and is not always effective enough to justify the expense, few broiler companies wash and sanitize du...

Many of the poultry flocks produced in the United Kingdom are colonized with Campylobacter, and the intensive nature of poultry processing usually results in contaminated carcasses. In this study, a previously reported molecular oligonucleotide probe method was used to track a specific flock-colonizing strain(s) on broiler carcasses during processing in two United Kingdom commercial poultry pro...

chicken infectious anaemia is a viral disease in young chickens which characterized by aplastic anaemia and immunosuppression. between january 2004 and july 2005, an unusual hemorrhage in subcutaneous and intramuscular tissues of broiler chickens at slaughter houses of mashhad, isfahan and tehran provinces were occurred. postmortem examination revealed severe hemorrhages in the wings and muscle...

Chicken infectious anaemia is a viral disease in young chickens which characterized by aplastic anaemia and immunosuppression. Between January 2004 and July 2005, an unusual hemorrhage in subcutaneous and intramuscular tissues of broiler chickens at slaughter houses of Mashhad, Isfahan and Tehran provinces were occurred. Postmortem examination revealed severe hemorrhages in the wings and muscle...

Avian leukosis viruses (ALVS) cause different types of tumours in poultry and can affect the health and egg production of the birds. To investigate the presence of the virus in chicken layer flocks in Shiraz, 222 egg albumen from local layer breeder (25 eggs), local layer grand parent (30 eggs), broiler breeder (60 eggs), commercial layer (46 eggs) and broiler grand parent (61 eggs) were tested...

Campylobacter isolates from diverse samples within broiler production and processing environments were typed by using flaA short variable region DNA sequence analysis. Sixteen flocks from four different farms representing two broiler producers in Arkansas and California were analyzed. Fourteen of the flocks (87.5%) were Campylobacter-positive; two remained negative throughout the 6-week rearing...

BACKGROUND From 2014 to 2015 in China, many broiler breeder and layer hen flocks exhibited a decrease in egg production and some chickens developed hepatitis syndrome including hepatomegaly, hepatic necrosis and hemorrhage. Avian hepatitis E virus (HEV) and avian leucosis virus subgroup J (ALV-J) both cause decreasing in egg production, hepatomegaly and hepatic hemorrhage in broiler breeder and...

Large creamy color livers of some chickens from a commercial broiler flock, reared in Tehran province, were noticed in a slaughter house. Myeloid leukosis (myelocytoma) characterized by presence of typical gross and microscopic lesions was diagnosed. Further studies for assessment of prevalence of this disease in broiler breeders and broilers flocks was suggested.