THE EFFECT OF DIETARY FACTOR ON HEMATOLOGICAL PROFILE IN DAIRY COWS

Abstract

The article shows the findings of the research of the effect of the dietary factor on the hematological parameters of Holstein cows. We carried out the analysis of winter dairy food, general and biochemical blood test.

The food analysis showed an excess of dry matter and a lack of raw and digestible protein, crude fiber, crude fat, a lack of macronutrients Ca and P, carotene. The relationship between the food quality of and the biochemical composition, as well as the complete blood count of cows, was established. The research revealed that deviations in the diet of dairy cows affect their hematological parameters. Thus, in the blood serum of experimental animals, there was a pronounced deficiency of glucose, iron, manganese, calcium, zinc, copper, nickel and cobalt. All these deviations from the physiological norm are directly dependent on the chemical composition of the food. The insufficiency of these elements is responsible for the development of osteodystrophy, disruptions in sex hormone production (due to a manganese deficiency), and, as a result, an extension of the open period due to repeat breeding. These deficiencies lead to disturbances in the body's metabolic processes in animals, consequently affecting their fertility. Hematological parameters indicate a decrease in segmented neutrophils, along with elevated levels of leukocytes and monocytes. Other parameters (platelets and white blood cell (stab cells, basophils, lymphocytes, erythrocyte sedimentation rate) were found to comply with physiological standard.