Abstract：
The inability of a bull to reproduce due to its inability to impregnant fertile cows is called impotentia generandi. This infertility may be due to the inability to achieve erection, the inability to complete coitus, or the inability to produce an adequate volume of morphologically normal spermatozoa. Therapies targeting the urogenital tract of the bull can restore reproductive capabilities. Veterinarians can provide consultation regarding both management and selection criteria that will, in some cases, lower the overall risk of loss associated with the development of some conditions of the penis and prepuce.
摘要：
由于无法使可育的母牛怀孕而无法繁殖的公牛称为无能。这种不孕症可能是由于无法勃起，无法完成性交，或无法产生足够体积的形态正常精子。针对公牛泌尿生殖道的疗法可以恢复生殖能力。兽医可以提供有关管理和选择标准的咨询，在某些情况下,降低与某些阴茎和包皮过长疾病发展相关的总体损失风险。
