Robb G W, Amann R P, Killian G J
J Reprod Fertil. 1978 Sep;54(1):103-7. doi: 10.1530/jrf.0.0540103.
Rats were considered to be pubertal at 50 days of age when spermatozoa were first found in the tail of the epididymis. Sperm production/g testis increased up to 75 days of age and testicular weight increased until 100 days of age. Sperm reserves in the tail of the epididymis were not maximal until 100 days of age. Therefore, Wistar rats are not sexually mature until 100 days. Sexually mature rats had testes weighing 3.7 g, produced 86 x 10(6) spermatozoa or 24 x 10(6) spermatozoa/g testicular parenchyma daily, and their paired epididymides contained 295 x 10(6) spermatozoa in the head + body and 440 x 10(6) spermatozoa in the tail.
当在附睾尾部首次发现精子时，50日龄的大鼠被认为处于青春期。每克睾丸的精子产量在75日龄前增加，睾丸重量在100日龄前增加。附睾尾部的精子储备直到100日龄才达到最大值。因此，Wistar大鼠直到100日龄才性成熟。性成熟的大鼠睾丸重3.7克，每天产生86×10⁶个精子或每克睾丸实质产生24×10⁶个精子，其成对的附睾头部和体部含有295×10⁶个精子，尾部含有440×10⁶个精子。
