Age-related changes in blood indicators in chickens under conditions of administration of ergotropic drugs to chickens of the parent flock

The use of biologically active substances has a direct effect on the synthetic processes in the body of hens and the quality of eggs, the quality of eggs - on hatching chickens and hatchability of eggs. The aim of the experiment was to establish the effect of ergotropics used in parent stock hens on the biochemical parameters of the blood of the chickens obtained from them during the entire growing period. For this purpose, three groups of Cobb-500 cross chickens were formed: the control group received "Vitol SN" at a dose of 0.5 ml/l, experimental group 1received "Antistress B-K-choline" at a dose of 0.25 ml/l, experimental group 2 reeceived "Intromin Oral" at a dose of 0.5 ml/l. After five days of drinking ergotropics, the obtained eggs were incubated, after the hatching of chickens, three groups were formed in accordance with the preparations used in the parent stock hens. It was found that from the moment of hatching to the final point in the blood serum of the control group there was an increase in total protein by 73.26 %, albumin by 29.13 %, globulins by 104.35 %, a decrease in the protein coefficient by 30.65 %; 1 experimental group - the content of total protein, albumin and globulins increased by 99.86 %, 93.79 % and 103.56 %, the protein coefficient decreased by less than 5.00 %; 2 experimental group - the content of total protein, albumin and globulins increased by 87.96 %, 38.80 % and 117.50 %, the protein coefficient decreased by 36.36% respectivly. The Ca content varied from 2.30 mmol/l to 3.70 mmol/l, the P content was quite high, which is due to the high growth rate of chickens. The Mg level varied within narrow limits, providing magnesium-dependent processes in the body. The activity of AST and ALT at the final stage in the chickens of the experimental groups was lower than in the control group. Therefore, the ergotropics used in the parent stock chickens contributed to the acceleration of growth and synthetic processes in the chickens; a more pronounced effect was found in the experimental group 1.