Abstract
This study examined the effects of 5 diluents--glucose-phosphate (GP), skim milk-egg yolk (MY), egg yolk-citrate (YC), blood sera (S), and seawater (SW)--on daily motility of ram sperm stored at 5°C for a short time. Ram semen collected by artificial vagina was diluted. Percentage of motile spermatozoa (PM) was assessed every 24 h up to day 10 after dilution. The different kinds of diluents except for SW had no effect on the primary motility of sperm and the primary motility was 0 with SW. There was a significant effect ( p <.01) of diluent type and storage times in the conservation rates after cooling for PM. The GP diluent achieved greater values (80.5±0.88%) than S (69.5±1.70%) and MY (78.0±1.17 %), while YC showed an intermediate value (79.0±1.24 %). In relation to time of storage, GP and YC diluents showed the PM values up to day 10, but these values were 8 and 7 days for MY and S, respectively. The GP and YC extenders maintained a PM> 50% up to day 4, while MY was greater than 50% up to day 3 and S to day 2.