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The fertility obtained with ram semen pellet frozen on dry ice (-790) (Lightfoot and Salamon 1970; Salamon and Lightfoot 1970) has stimulated further investigation. Information was also needed on fertility of ram spermatozoa pelleted at a temperature below -79C (Salamon 1970) and this communication presents the results of two experiments and treatment comparisons for each.

Fertility of Ram Spermatozoa Following Pellet Freezing on Dry Ice At ?79 And ?140°C