Zoohygiene studies have been carried out in the course of two years, following up periodically at 20--25-day intervals the concentration of ammonia gas and hydrogen sulfide, the relative humidity, and the temperature within the houses of an industrial animal-breeding complex for the production of broiler turkey-poults. Parallel investigations have aimed at following up the morbidity and mortality rates among the birds. Part of them divided into age groups, have likewise been studied in terms of total protein and protein fractions of the blood serum along with the establishing of the blood bactericidal titer. Dependable values have been found of the interrelationship between the age of the turkey-poults and their mortality rate. The same have proved to be the values expressing the correlation between the air concentration of ammonia gas in the farm houses and the mortality rate shown. It is concluded that the mortality rates established in the turkey combine might probably be due to the action of comlex factors, mainly to inappropriate microclimate and incomplete raising technology that contribute to the appearance and development of pathogenic and occasionally pathogenic agents as well as of some noninfectious diseases.
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