Sertoli cells produce anti-Müllerian hormone (AMH) and number of these cells is associated with numbers of sperm produced. The study aim was to quantify AMH concentrations in serum and seminal plasma of donkeys during puberty, and to correlate the values with those for testicular width and semen quality of sexually mature males. Blood was collected from five donkeys every second month from 4 to 24 months of age, and then once at 40 months of age. Semen was collected once monthly, from 13 to 19 and 23–25 months of age. There was quantification of AMH concentrations in serum and seminal plasma. During puberty, there was a redirection of AMH secretion from the blood stream into seminal plasma. In serum, AMH concentrations increased during puberty with a maximal concentration at 16 months and the changes were similar for seminal plasma with a maximal concentration at 18 months of age. Serum AMH concentrations from 14–20 were greater than at 12 or 22 months of age. Maximal serum AMH concentrations were associated with testicular width at 24 months (r = 0.97, P = 0.005), but not with sperm count, sperm motility or percentage of sperm with normal morphology at 42 months of age. There were no significant correlations among values for AMH concentrations in seminal plasma during puberty and values for any of the seminal variables.

睾丸支持细胞产生抗苗勒氏管激素（AMH），这些细胞的数量与产生的精子数量有关。该研究的目的是量化青春期驴的血清和精浆中的AMH浓度，并将这些值与性成熟男性的睾丸宽度和精液质量相关。从4到24个月大的第二个月从五头驴那里采血，然后在40个月大的时候采一次。每月从13至19和23–25个月大一次收集精液。血清和精浆中的AMH浓度有定量。在青春期期间，AMH分泌从血流重定向到精浆。在血清中 AMH浓度在青春期增加，最大浓度在16个月，而精浆的变化相似，最大浓度在18个月时。14-20岁时的血清AMH浓度大于12或22个月大时。在24个月时，血清AMH的最高浓度与睾丸宽度有关（r = 0.97，P = 0.005），但不包括42个月大时具有正常形态的精子数量，精子活力或精子百分比。青春期精液中AMH浓度的值与任何精液变量的值之间无显着相关性。