Seasonal changes in the quality of rainbow trout (Salmo gairdneri) semen: Effect of a delay in stripping on spermatocrit, motility, volume and seminal plasma constituents

Seasonal changes in ejaculate characteristics were monitored for groups of male rainbow trout (Salmo gairdneri) which were stripped weekly, beginning at various periods after the onset of the spermiation cycle. The duration of stripping varied from 14 to 28 weeks for the different groups, and the minimum duration of milt release was longer for groups in which semen collections wewe begun earlier in the season. A delay in initiating milt …