A STUDY OF THE EFFECTS OF ELEVATED TEMPERATURE OF SCROTUM BY INSULATION IN DIFFERENT BREEDS OF BULLS

Abstract

In this reareh by applying a Jpecial bag we have been abie-toperjorm a higg scrotal temperature as !lear as th? body temperature and our irıteıilion was to determine tlı. effect of short perıod scrotal insulations on semen characteristiesqf different bu!!s aı,d also to deter mine whether there are differenees in response between Native, Montafon eronbred and Swedish Red Breed bulls. No changes have oeeurred in respect to volume, motility and coneentration altributable to the short period insulations; however obvious deereases have been obsered in the motility and the coneentratioll as a result of long period insulations. The prolongation of the insulation periods have eaused some undesired changes in the spermato<:oalcharacteriJtics and the recovery has needed a longer period of time. In comparable work, by applYing the same insulation periods we have shown that the thermal influnee on the spermatozoal eharaeteristies was fourıd to be more effeetiıe in Swedish Red Breea bulls than in our Native and crossbred bulls. °