Abstract
The paper presents the results of the use of pancreatic enzymes in the form of intramuscular injection of pure pancreatic juice obtained from fistulated chickens to broiler chickens. At 7 days of age during the formation of groups, the differences between the control and experimental chickens were 17.9% (p<0.05) in favor of the former. It was found that after the injection of the drug 1 time in 7 days, there was a stimulation of metabolism in the experimental group broilers. By 14 days of age, the differences between the groups were 17.4% (p<0.05), to 21 days of age - 9.1% (p<0.05), to 28 days of age - 5.3%, to 35 - day-old age - 4.9%. Consequently, as the chickens were raised by 28 days of age, the chickens of the experimental group caught up with the live weight of the control ones, and, considering the increase in live weight, even exceeded this indicator (50.1 g/day versus 42.7). The use of parenteral pancreatic juice of chickens at a dose of 0.1ml/kg of live weight of broiler chickens allows to conclude that the drug has a stimulating effect on poultry metabolism, manifested by an increase in live weight gain, an increase in the content of lymphocytes, as an indicator of immunity, activation of protein and mineral metabolism in the body when using an enzyme preparation.
Highlights
Pure pancreatic juice of chickens is a clear or yellowish alkaline liquid
Experimental data allowed the authors to come to the conclusion on the presence of a regulatory role of pancreatic enzymes in the secretory process pursuant to the feedback principle [4,5,6]
The control group consisted of chickens with a higher live weight within the age (10 birds), the experimental group consisted of chickens with a live weight deficit (10 birds)
Summary
Pure pancreatic juice of chickens is a clear or yellowish alkaline liquid. The specific weight of juice is 1.0064-1.0108, the content of solids is 1.8-2.2% and the pH level is 7.2-8.1. The pancreatic proteases are trypsin, chymotrypsin, carboxypeptidases, and elastase In the pancreas, they are in an inactive state and are activated when they enter the intestine by the enzyme enterokinase, discovered by N.P. Shepovalnikov (1899) in the laboratory of I.P. Pavlov. Experimental data allowed the authors to come to the conclusion on the presence of a regulatory role of pancreatic enzymes in the secretory process pursuant to the feedback principle [4,5,6]. Such experiments have not been performed on birds that have the specific digestive features. We decided to fill this gap and, for the first time, to study the development in ontogenesis and morphologicaland-biochemical parameters of blood in broiler chickens against the background of parenteral use of pancreatic enzymes
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