| 中文名稱 | 精子生成，精子生發的多重異常 |
|---|---|
| 英文名稱 | Abnormalities of spermiogenesis, spermatogenesis |
| 建立日期 | 2007/11/01 |
| 更新日期 | 2007/11/01 |
| 中文描述 | 型態上的缺陷會造成公牛的繁殖障礙。而主要的缺陷（例如不正常的頭部, 不成熟的精子和不正常的中段）則跟牡馬的繁殖障礙有關。有時缺陷也會造成狗的繁殖障礙。雄鹿的精液也會有異常的情形，不過跟繁殖障礙沒有關係。腫大的中段，多頭，呈球狀頂體的畸形精子，和核內的囊腫等都是影響公豬繁殖能力的因素。 |
| 英文描述 | Morphologic defects can contribute to infertility in bulls. Major defects (abnormal heads, proximal droplets, and abnormal midpieces) were associated with infertility in stallions, and defects sometimes cause infertility in dogs. Abnormalities have been seen in the semen of bucks, but have not been associated with infertility. Swollen midpiece defect, multiple heads, knobbed spermatozoa, and intranuclear cyst have been listed as causes of infertility in boars. |