TESTICULAR DEVELOPMENT IN CHINESE MEISHAN BOARS
TESTICULAR DEVELOPMENT IN CHINESE MEISHAN BOARS
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DOI：
10.1016/0093-691x(91)90401-x
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发表时间：
1991-10-01
期刊：
影响因子：
2.8
通讯作者：
KATO, S
中科院分区：
文献类型：
--
作者：
HARAYAMA, H;NANJO, I;KATO, S
研究了1 ~ 364日龄梅山猪睾丸的发育过程和睾丸网精子形态的日龄变化。 睾丸重量和曲细精管直径迅速增加，直到150至180日龄。 精母细胞、圆形精子细胞和精子分别于30 ~ 45、60和75日龄在曲细精管切片中首次出现。 然而，105至120日龄后，大多数睾丸网精子形态正常。 这些结果表明，梅山猪虽然在120日龄左右睾丸获得产生形态正常的精子的能力，但在75日龄就进入青春期。
The developmental process of the testis and age-related changes in the morphology of rete testicular spermatozoa were investigated in Meishan boars at 1 to 364 days of age. Testicular weight and the diameter of seminiferous tubules increased rapidly until 150 to 180 days of age. Leptotene stage spermatocytes, round spermatids and spermatozoa were first found in the section of seminiferous tubules at 30 to 45, 60 and 75 days of age, respectively. However, after 105 to 120 days of age, most rete testicular spermatozoa were morphologically normal. These results indicate that Meishan boars reach puberty as early as 75 days of age, though the testes acquire the ability to produce morphologically normal spermatozoa at about 120 days.