Sertoli Cells in the Boar Testis: Changes During Development and Compensatory Hypertrophy after Hemicastration at Different Ages

摘要: Changes in Sertoli cell numbers and testicular structure during normal development compensatory hypertrophy were assessed crossbred Meishan 3 White Composite males. Boars assigned at birth to unilateral castration 1, 10, 56, or 112 days remain as intact controls through 220 days. The first testes removed compared assess development. At days, was evaluated boars representing the 25% with largest (Lg) testis smallest (Sm) each treatment group. number of cells per reached a maximum by Day 56 Sm but not until Lg boars, indicating longer duration proliferation boars. Unilateral on Days caused weight remaining 149%, 135%, 119%, 120%, respectively, total sperm production increase 127%, 128%, 97%, 106%, respectively. However, changed little hemicastrate In primarily involved Leydig expansion existing numbers, it without numbers. These results indicate that display intriguing differences both hypertrophy, they identify unique animal model for further studies factors program control proliferation. cells, male reproductive tract, puberty, spermatid, spermatogenesis