Biochemical parameters of chicken blood under the influence of technological stimuli of various etiologies

Abstract

Violation of the main technological parameters of keeping and feeding poultry is the main factor in reducing egg productivity and health in the industrial production system. Therefore, the research aims to determine biochemical markers in acute technological stress caused by factors of various etiologies. In this study, serum biochemical parameters were evaluated for the effects of stimuli in egg-laying chickens. The study was conducted on several Hy-Line W-36 cross chickens in the conditions of a production line. Four groups of chickens (101 heads each) aged 52 weeks were formed to conduct the study. The control group was formed from 10 representatives of each of the groups. Further, each group was exposed to a corresponding technological stimulus. Birds of group 2 were not fed for 24 hours, those of group 3 were kept in a darkened place, and 60 additional birds were placed in a cage with the chickens of group 4. The highest effect on the dynamics of biochemical parameters was an increase in their concentration by 1 m2 cage space. The studies identified a substantial increase in the concentration of glucose and creatinine in the blood serum of chickens during over-compaction – by 24-28% (p<0.05) compared to the control group, regardless of the cause of the stressful situation, all birds exposed to acute stress had an increase in these indicators in the blood serum. The main part of the examined enzymes, such as aspartate aminotransferase, alkaline phosphatase, and lactate dehydrogenase, tended to increase their activity depending on the strength of the influence of the technological factor on the body of birds. Dynamic characteristics of glucose and creatinine levels were distinguished among the examined biochemical parameters by rapid and differentiated reactions within the physiological norm, and considering the simplicity of their determination, they may have prospects of becoming the main markers of early diagnosis of stress in industrial poultry farming