Influence of genotype and season on the sperm production of beef cattle-producing bulls in Kazakhstan

A.B. Makhanbetova, Nurlybai Kazhgaliyev, Alzhan Smailuly Shamshidin, Zh.Е. Titanov, Dulat Ibrayev, Bolatbek Ateikhan

2023

Full text Open access: Gold Metadata (CSL-JSON)
DOI 10.31893/jabb.23030
Data confidence 70 medium
How this score is calculated

It is built from checkable properties of the record itself: whether the article has a DOI, how many independent sources confirmed its data, whether the required fields are filled in, and how recent the latest confirmation is. Disagreement between sources and a missing identifier lower it. A value of 80 or above means the record was published without further checking; 60 to 79 means it is published at reduced confidence, with a manual check advisable. A record verified by an editor by hand is never pushed below 90 by a recalculation. This scores our data about the article, not the article itself.

Abstract

In this paper, we aimed to study the influence of genotype and season on sperm production in beef cattle sires in Kazakhstan. Based on the results obtained over five years of using beef cattle sires, it can be considered that the spring and summer periods have a significant impact on Kazakh Whiteheaded sires; the winter and summer periods affect Aberdeen-Angus sires, and the spring period affects Hereford sires. Other seasons mainly had a positive influence on sperm production indicators, and if there were any changes, they were not significant. The highest concentration in the ejaculate was observed in Kazakh Whiteheaded sires during the winter-autumn period, amounting to 0.82 billion/ml; in Aberdeen-Angus sires during the spring-autumn period, it was 0.72-0.72 billion/ml; and in Hereford sires during the autumn period, it was 0.82 billion/ml. Autumn had a positive influence on all genotypes.