
This study was conducted to determine the effect of drinking water as solvent for extender on motility of buck sperm. Semen was collected by artificial vagina from five bucks. Four different source of drinking water (Zamzam, Hana, Nova and Aqafina water) and distilled water were used as solvents in Tris-egg yolk extender. So five extenders were formed Zamzam, Hana, Nova, Aqafina and distilled extenders. Sperm have the longest life and motility when using Zamzam extender (12 days). While, the use of distilled extender caused reduction in survival rate and motility of sperm (5.5 days). drinking water such as Zamzam water might be use as solvent in Tris-egg yolk extender for chilled semen of buck. So, we have to reconsider the composition of extender such as solvents and elements (calcium and potassium).