Correction of the development of heat stress in broiler chickens in the complex of veterinary and sanitary measures used in an industrial-type poultry farm

Abstract

Relevance. The degree of development of heat stress in poultry is associated with the influence of a number of factors: the value of the peak temperature, the duration of its influence on broiler chickens, air humidity in the poultry house, ventilation, age and live weight of the birds. Based on the heat load on the body of the bird, feed consumption, productivity and quality of the products obtained are reduced to varying degrees. Thermal load exceeding adaptive capacity can be fatal.Methods. To determine the degree and depth of the effect of heat load on the body of a bird, production data from the leading poultry farms of the Chelyabinsk and Belgorod regions were studied. A production experiment on the correction of heat stress was carried out in the conditions of poultry houses with cage keeping of broiler chickens. The birds of the experimental group were fed a solution of the drug "PARATERM" through medicators for 5 days before slaughter, at a dose of 70 mg/kg of body weight. On the 39th day, the birds were slaughtered.Results. Against the background of the use of the drug "PARATERM", the safety of birds in the experimental group increased by 1.6% compared to the control group, the mortality during transportation decreased by 6.6 times. Against the background of the accumulation of protein mass in the poultry meat of the experimental group, there was an increase in the amount of moisture and a decrease in amount oflipids. The content of heavy metals and toxic elements in the poultry meat of the experimental groups did not exceed the permissible level, that indicates the safety of the meat raw materials obtained. Statistically significant changes in the meat of the experimental group were observed in the content of copper and zinc.