Рассматриваются причины заражения птиц колибактериозом и пастереллезом в фермерских и индивидуальных хозяйствах Масаллинского и Хачмазского районов Азербайджанской Республики. В ходе обследовании выявлено заражение домашних кур колибактериозом и пастереллезом по каждой возрастной группе. Так, у 30-дневных цыплят выявлено заражение колибактериозом - 24,4%, пастереллезом - 31,1%, у 45-дневных колибактериозом - 33,3%, пастереллезом - 37,7%, у 60-дневных колибактериозом - 20,0%, пастереллезом - 26,6%. The article talks about the causes of infection of birds with colibacillosis and pasteurellosis in farm enterprises and private farms, about research work carried out in recent years at poultry farms, about the influence of opportunistic microbes on the activities of farms. The difference in infection of domestic chickens with colibacillosis and pasteurellosis for each age group was identified by us during the examinations. So, in 30-day-old chickens, infection with colibacillosis 24.4%, pasteurellosis 31.1%, in 45-day-old colibacillosis 33.3%, pasteurellosis 37.7%, in 60-day-old colibacillosis 20.0%, pasteurellosis 26.6% was detected.

The article presents the results of studies on the infection of cattle with dicroceliasis, depending on the age group and seasons of the year, conducted in livestock farms of Bilasuvar, Gabala, Guba and Goranboy regions As a result of the research, it was found out that the average degree of infection of animals with dicroceliasis in private livestock farms in the Bilasuvar region is 40.4% in spring, 14.8% in summer, 38.2% in autumn, 11.5% in winter;Gabala - in spring - 31.6%, in summer - 9.3%, in autumn - 27.3%, in winter - 5.8%;Gubinsky - in spring - 35.1%, in summer - 13.0%, in autumn - 29.1%, in winter - 9.6%;Goranboy - in spring - 26.3%, in summer - 5.6%, in autumn - 21.8%, in winter - 3.8%.As a result of scatological studies, a high prevalence of invasion (EI) is noted in the spring and autumn seasons of the year. With incomplete helminthological dissection of the liver of animals in the farms of Bilyasuvar region, the intensity of invasion is 22–54 specimens, Gabala 14–33 specimens, Guba 18–46 specimens,and Goranboysky 11–29 specimens.