Application of low-intensity laser radiation to increase dairy productivity of cows

At present, laser technologies are widely used in animal husbandry. Laser therapy has been used not so long ago, but has already established itself as a highly effective method. Clinical and experimental studies carried out by scientists in the last decade confirm that laser exposure is an environmentally friendly, safe and painless way to treat internal and external pathologies. It stimulates the regeneration of cells and microvessels, improves the supply of oxygen to tissues and blood parameters, strengthens the immunity of animals. The aim of the work was to study the mechanisms of action of low-intensity laser radiation on dairy productivity and quality indicators of cattle milk in a state of physiological norm and under technological stress. The experiments were carried out at the Department of Animal Physiology and Biochemistry of the Nizhny Novgorod State Agricultural Academy and in the regional veterinary laboratory, and tests of the preventive effectiveness of LILI in the conditions of the pedigree farm of JSC "Rumyantsevskoe" in the Dal'nekonstantinovsky district of the Nizhny Novgorod region. The objects of research were highly productive Holsteinized cows of the black-and-white breed of the second lactation (two weeks after calving). Using the method of analogs, 6 groups of cows were formed, six heads each. In experiment 1, group of animals was intact, groups 2,3,4,5,6 were exposed to technological stress: weighing, regrouping, changing the diet, conducting veterinary treatments, then 3,4,5,6 groups were irradiated with NILI. We studied the continuous effect of low-intensity laser radiation with a wavelength of 830 nm, with a total power of 90 mW on the ear and withers for 5 and 15 minutes. It was revealed that an increase in milk productivity, a positive effect on the quality of milk when exposed to low-intensity laser radiation for 15 minutes in the ear and 5 minutes in the withers. At the same time, milk productivity has also increased, and a positive effect on the quality of milk has been noted. We studied the continuous effect of low-intensity laser radiation with a wave-length of 830 nm, with a total power of 90 mW, the point of application were ear and withers, duration for 5 and 15 minutes. It was revealed an increase in milk productivity, a positive effect on the quality of milk when exposed to low-intensity laser radiation for 15 minutes at the ear and 5 minutes at the withers. At the same time, milk productivity has also increased, and a positive effect on the quality of milk has been noted.

низкоинтенсивное лазерное излучение, крупный рогатый скот, технологический стресс, молочная продуктивность, low-intensity laser radiation, cattle, technological stress, dairy productivity

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