INFLUENCE OF TYPE MANAGEMENT OF SIRES ON THEIR SPERM PRODUCTION
The article contains the results of study of sires sperm production at tie and loose type systems of management. The study was done in the period 2012-2013 on 59 Holstein animals, among which 33 were at tie and 26 were at loose type system of management. Bulls under loose management have volume of ejaculate higher by 13-16% and number of spermatozoids in one ejaculate higher by 5-8%. It was found that the loose type system of management is more effective -sires under this system were showing higher rates by 8,6-9,4 % of accumulating semen stock.