THE EFFECT OF LOW-INTENSITY LASER RADIATION ON THE BIOCHEMICAL STATUS AND MILK PRODUCTIVITY OF COWS AGAINST THE BACKGROUND OF TECHNOLOGICAL STRESS
Abstract
echnological stress arising under the influence of factors related to the methods of keeping cattle and elements of technology has an adverse effect on the health of animals and their productivity. The development of methods that increase the natural resistance of animals and have an adaptogenic effect under stress is an urgent problem of animal husbandry and veterinary medicine. The aim of the work was to study the effect of low-intensity laser radiation on the biochemical parameters of blood and milk productivity of cattle in an industrial complex.
Material and methods. Experimental studies were conducted on highly productive black-and-white cows. As an anti-stress factor, low-intensity laser radiation with a wavelength of 830 nm was used, the exposure time was 5, 15 minutes in the ear and withers area. The content of total protein, glucose, urea, creatinine, cholesterol, and transaminase activity were determined in the blood. Studying the milk productivity, we determined the fat-milk content, protein-milk content, the content of lactose and solids in milk.
Results. In animals under conditions of technological stress, the indicators of milk productivity were reduced, the content of total protein, creatinine, urea, cholesterol was reduced, the content of glucose and transamination enzymes was increased compared to the indicators of the intact group. The use of low-intensity laser radiation in the ear area for 15 minutes and withers for 5 minutes contributed to the normalization of the studied biochemical blood parameters in animals. The best indicators of milk productivity were obtained in cows that were exposed to low-intensity laser radiation for 5 minutes.
Conclusion. The results of the experiment indicate that high-intensity laser radiation has a positive effect on the physiological reserves of the body, which allows it to be used to achieve optimal productivity of animals.
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Copyright (c) 2021 Marina N. Ivashchenko, Anna V. Deryugina, Tatyana I. Solovyeva, Maria N. Talamanova, Andrey A. Belov, Vladimir A. Petrov
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