[The effect of the sperm collection rhythm on the sperm production of insemination bulls in subtropical climate conditions].

Abstract

A contribution is presented towards stabilizing the sperm production of A. I. bulls under subtropical conditions. The results are outlined of a production experiment on the influence of different sperm collection frequencies on the sperm production as found in 48 insemination bulls of a central bull station in the Syrian Arab Republic in the course of one year. It was found that a rhythm of 2 collections per bull and week provides favourable conditions for a stable and high-level sperm production.