GROWTH AND DEVELOPMENT OF KAZAKH WHITE-HEADED BULL CALVES OF DIFFERENT BODY TYPES UNDER THE CONDITIONS OF PF "KAIRAT" IN THE PAVLODAR REGION

The article presents a comprehensive analysis of the growth and development of bulls of the Kazakh white-headed breed of different body types (tall, moderate and compact) in the conditions of the peasant farm "Kairat" of the Pavlodar region. The main attention is paid to the study of the dynamics of live weight, measurements and body indices in different age periods (from birth to 18 months), as well as the relationship between body type and productive indicators. The study included regular weighing, body measurements, and body index calculations using variation statistics and correlation analysis methods. The results show that the tall body type shows the highest rates of weight gain and linear growth, which makes it promising for breeding work aimed at increasing meat productivity. The compact type is distinguished by more pronounced meat forms, latitudinal measurements and economy of feed use, which makes it preferable for breeding in conditions of limited resources. The moderate type, due to its balanced characteristics, can be considered as universal for meat production in various climatic conditions. The article emphasizes the importance of choosing a body type in the context of optimizing production processes and increasing the efficiency of the use of forage lands. The data obtained are of practical importance for improving breeding work, developing resource-saving technologies for growing young animals and adapting production to the conditions of the continental climate of the Republic of Kazakhstan.