Schopper D, Gaus J, Claus R, Bader H
Acta Endocrinol (Copenh). 1984 Nov;107(3):425-7. doi: 10.1530/acta.0.1070425.
The influence of season on testicular steroid production as a parameter of testicular function has been studied in a wild boar. Semen was collected once weekly while it served the dummy. In seminal plasma concentrations of the following steroids were determined by radioimmunoassay: unconjugated testosterone, conjugated testosterone, unconjugated total oestrogens, conjugated total oestrogens and 5 alpha-androst-16-en-3-one ('boar-taint steroid'). All steroids showed a clear seasonal pattern with highest concentrations in autumn and early winter and low levels from January to July. Maxima during the rutting season were 10-25 times greater than average values out of season. During a 2-month-period (mid-July until mid-September) libido was abolished and the wild boar refused to mount the dummy. These results indicate that the seasonal variation in testicular steroid production by the wild boar, regulated by photoperiod, are similar to those of the domestic boar.
在一头野猪身上研究了季节对作为睾丸功能参数的睾丸类固醇生成的影响。在这头野猪为假母猪配种期间，每周采集一次精液。通过放射免疫分析法测定精浆中以下类固醇的浓度：未结合睾酮、结合睾酮、未结合总雌激素、结合总雌激素以及5α-雄甾-16-烯-3-酮（“公猪异味类固醇”）。所有类固醇均呈现出明显的季节性模式，秋季和初冬浓度最高，1月至7月水平较低。发情季节的最大值比非发情季节的平均值高10至25倍。在为期2个月的时间段（7月中旬至9月中旬）内，性欲消失，这头野猪拒绝爬跨假母猪。这些结果表明，受光周期调节的野猪睾丸类固醇生成的季节性变化与家猪相似。
