COMPREHENSIVE EVALUATION OF SEMEN QUALITY IN KAZAKH WHITE-HEADED BULLS

Abstract

This study aimed to evaluate the semen quality of Kazakh White-headed bulls. The research was conducted from April to May 2025 on 16 bulls aged 1.5–2.5 years from the “Zhaigylan” LLP and “Bereke” SC. Semen was collected using the electro-ejaculation method and assessed using the Accuread Bovine photometer and traditional microscopic techniques. Evaluation criteria included semen appearance, sperm concentration, semen density, and sperm motility. Results showed that most semen samples were white or slightly yellowish. Sperm concentration ranged from 0.6 to 1.0 billion/mL, and motility ranged from 6 to 10 points. Semen density was categorized as thick (T), medium (M), or sparse (S). Higher concentrations were observed in “Zhaigylan” LLP bulls, while some “Bereke” SC bulls showed lower values. The study concluded that the semen quality of the evaluated bulls meets standard requirements, confirming their selection and reproductive value. The obtained data can be used to optimize the use of bulls in cow herds and for herd “clean-up” in beef cattle production. The use of automated tools such as Accuread Bovine allows for faster and more accurate semen analysi