Egg-laying hens’ reaction on chronic and acute (slaughtering) stress

Stress is connected with poultry welfare, health and productivity closely. The aim of survey was Hisex Brown egg-laying hens’ biochemical state and corticosterone concentration in blood plasma under chronic and acute stress conditions on two industrial platforms. It is displayed that biochemical level characterizes peculiar properties of technological aspects on different companies and biochemical plasma blood state can be performed as an indicator of stress. Chronic and acute stress’s differences in biochemical state unit obtain 4-57% and 12-32%, respectively. Indicators of lipid metabolism are reduced in the First group’s egg-laying hens at slaughter compared with intravital on 17-18%. This can be induced by higher background chronic stress level and the depletion phase advention. Variation coefficients increase under the acute (slaughtering) stress conditions and characterize poultry’ individual stress-sensibilisation Hens’ intravital corticosterone blood plasma concentration in the Second group was lower than in the First group on 57%...