Abstract
Summary
Losses of libido and seminal volume, fructose and gel were quantified in eight rabbits ejaculated every second day for 26 days after castration. Androgen requirement for restoration of normal libido and seminal characteristics was established in the same rabbits by injections of testosterone propionate (TP) at levels of from 0.5 to 12.0 mg every second day. Gel mass disappeared from ejacula immediately after castration and seminal fructose declined from 760 μg before castration to 192 μg/ejaculum within 48 hr. But seminal volume and libido declined only gradually and linearly for 3 weeks after castration. Even after 26 days, nearly all rabbits mounted and thrust vigorously although unable to ejaculate. Although libido of castrate rabbits was increased significantly by 0.5 or 1.0 mg of TP, seminal characteristics were not. Control levels of both were reestablished at 8.0 mg of TP.
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