Change of seed productivity of spermodonorous bulls belonging to the Bushuev breed by seasons of the year

Tashkent State Agrarian University, University str., 2, 100140, Tashkent, Uzbekistan

^* Corresponding author: sherallayar@gmail.com

Abstract

Genetic productivity, feeding and maintenance conditions, and intra-herd characteristics are only a few of the variables that have an impact on the productivity of the cattle business. For coordinating production, several elements are essential [1–5]. Yet, it is also crucial to take into account the importance of current cattle in various economic farm categories around the nation. Personal assistants’ and peasant farmers’ individual family farms are smaller, more numerous, dispersed, have fewer financial and economic resources, and are run differently from bigger agricultural operations. Various factors have an impact on the productivity of the livestock industry. These include genetic productivity, feeding and maintenance conditions, and factors that are present within a herd. These factors play a crucial role in the organization of livestock production. The research project focuses on the study of five breeding bulls of the Bushuev breed, which are maintained at the state enterprise “Uznaslchilik”, under the same conditions as five other breeding bulls of the same age (two years). According to the results, the spring season had a positive impact on the reproductive function of breeding bulls, resulting in an increase in the volume of ejaculates. This increase ranged from a minimum of 0.17 ml in Angus bulls to a maximum of 0.43 ml in Bushuev bulls, showing an increase of 105-116%.