Связь между содержанием форменных элементов крови и молочной продуктивностью симментальской породы различного происхождения

Abstract

The paper presents the results of studying the relationship between blood parameters (erythrocyte count, hemoglobin level, alkaline reserve and total protein) and milk productivity in Simmental cows of different origin under farm conditions in the Republic of Tajikistan (Sogd region). The study was conducted during 2020–2024 on the basis of LLC “Afzali Zarzamin”. Three groups were formed according to the origin of the sires: German, Iranian and Russian breeding (20 animals per group; analogues by age and live weight). Milk yield was assessed using monthly control milking, while hematological and biochemical indicators were determined using the RSE-90 Vet analyzer and laboratory methods in the Diagnostic Center for Food Safety of Sogd region. It was found that with increasing milk productivity, there is a tendency towards higher erythrocyte count and hemoglobin concentration, as well as an increase in serum total protein. The blood indices in higher-yielding animals reflected a higher adaptive capacity to local housing and feeding conditions.