DAILY SPERM PRODUCTION OF ZEBUS (BOS-INDICUS) ESTIMATED BY QUANTITATIVE HISTOLOGY OF THE TESTIS
DAILY SPERM PRODUCTION OF ZEBUS (BOS-INDICUS) ESTIMATED BY QUANTITATIVE HISTOLOGY OF THE TESTIS
复制标题
DOI：
10.1016/0093-691x(85)90001-9
复制
发表时间：
1985-01-01
期刊：
影响因子：
2.8
通讯作者：
GODINHO, HP
中科院分区：
文献类型：
--
作者：
CARDOSO, FM;GODINHO, HP
对6头非洲斑马（Nelorebebebus，B. indicus），年龄4-6岁，精子发生正常，保持性静止。生殖细胞核的比率，计算在横截面的曲细精管，表明细胞损失在生精过程中的瘤牛高于牛磺酸。根据生精上皮细胞周期第1阶段中圆形精子细胞的数量和该周期的持续时间估计的每日精子产量为（平均值± 0.05）。标准差）12.2 ±。0.9. times. 106个精子细胞/g睾丸实质/天，2.6 ±. 0.5. times. 109个精子细胞/睾丸/天。这些值小于牛磺酸的值。
Microscopic parameters were studied quantitatively in testes from 6 Nelore zebus (B. indicus), aged 4-6 yr, with normal spermatogenesis, which were kept at sexual rest. Ratios of germ cell nuclei, counted in cross sections of seminiferous tubules, indicated that cellular losses in the spermatogenic process of the zebu are higher than those observed in taurines. Daily sperm production, estimated from the number of round spermatids in stage 1 of the cycle of the seminiferous epithelium and the duration of this cycle, was (mean .+-. SD) 12.2 .+-. 0.9 .times. 106 spermatids/g of testis parenchyma/day and 2.6 .+-. 0.5 .times. 109 spermatids/testis/day. These values are smaller than those of taurines.