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The fertilizing capacity of frozen-stored bull semen can be maintained for several years (Mixner & Wiggin, 1964; Mixner, 1968; Cassou, 1972). To examine the effect of long-term storage on the fertility of ram semen, a semen bank has been laid down, and the first stage of the fertility test conducted after 3 years of storage has been reported (Salamon, 1972). This communication presents the results for the second stage of the test using semen after 5 years of storage, and 'control' semen stored for 2 weeks. The processing and freezing in a raffinose-citrate-yolk-glycerol diluent was similar for both 5-year and 2-week-old semen, and has been already described (Salamon, 1971, 1972). The 'control' semen was collected from five Merino

FERTILITY OF RAM SPERMATOZOA FROZENSTORED FOR 5 YEARS