THE SPECIFIC GRAVITY OF BULL SPERMATOZOA AND SEMINAL PLASMA
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There are few reports in the literature concerning the specific gravity (s.g.) of mammalian spermatozoa and seminal plasma. Lindahl & Kihlstrom (1952) using umbradil salts of methylglucamine as the suspending medium found bull spermatozoa to have a specific gravity of 1·241 to 1·335. Lindahl & Thunqvist (1965) using Ficoll (polysaccharide of sucrose) obtained values of 1·21 to 1·33. These results are considerably higher than the specific gravity of 1·0975 reported by Yamane (1920) for the stallion, and 1·132 reported by Beatty (1964) for the rabbit. They also seem very high in view of the chemical composition of the dry matter and water content as given by Mann (1964) and VanDemark (1948).
The specific gravity of bull seminal plasma reported by Anderson (1946) was 1
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