Sexual preference tests. Each ram was given 3 preference tests at ~19 months of age (yr. 2). The frequencies of precopulatory (Pre) behaviors (anogenital sniffs, foreleg kicks, nudges, flehmen, and vocalizations), mounts (Mnts) and ejaculations (Ejacs) directed at either estrous female stimulus animals (Female-directed) or male stimulus animals (Male-directed) were recorded. Data represent the mean ± SEM frequencies on 3 tests (n=6 rams per group). *, P < 0.05 control versus Flu ram; #, P < 0.05 female-directed versus male-directed.