The effect of a decrease in relative humidity during the growing of broilers on immunity and productivity indicators

Abstract. An unsatisfactory microclimate in poultry premises contributes to damage the form of a decrease average daily gain broilers by 10 %. Purpose research is study effect relative humidity at same temperature regime on immunity and productivity Ross-308. Research methods. The experiment was carried out broiler chickens cross Ross-308 up 35 days age. In group II, period 0–1 growing broilers, indicators were less than lower limit norm %, periods 5–7, 11–16, 20–22 26–35 days, 5 I, all recommended as recommended. bactericidal activity blood serum determined method I. M. Karput, lysozyme nephelometric according V. G. Dorofeychuk. Results. As result study, it found that change air had negative immunity: decreased. So, 21st day, indicator II 14.2 % (P ≤ 0.05) compared At 3 weeks age, 14.3 control group. birds also decreased 13.70 relation control. Scientific novelty. For first time, we have shown content during cultivation norm, – subject parameters, has immunity.