Federal University of Piaui, Campus Profa Cinobelina Elvas, Bairro Novo Horizonte, Bom Jesus, Brazil.
Anim Reprod Sci. 2011 Aug;127(1-2):73-7. doi: 10.1016/j.anireprosci.2011.06.008. Epub 2011 Jul 2.
The present study aimed to compare testicular histology and the testicular cell population as well as spermatogenic efficiency in goats with different scrotal conformations. Eighteen goats were divided into 3 groups: Group I - goats without bipartition of the scrotum, Group II - animals with bipartition of the scrotum up to 50% of the testicular length, Group III - goats with scrotal bipartition more than 50% of the testicular length. In goats in Groups I, II and III, the values for the volume density of seminiferous epithelium were 68.9 ± 0.6%, 71.5 ± 2.8% and 73.4 ± 4.7% (P<0.05), the height of the seminiferous epithelium were 60.2 ± 4.9 μm, 61.0 ± 5.0 μm and 73.1 ± 6.6 μm (P<0.05), total length of seminiferous tubules found for Groups I, II and III were 2091.9 ± 27 m, 2172.5 ± 24.1 m, and 2340.1 ± 14 m (P<0.05), number of Sertoli and Leydig cells were 1.8 ± 0.4×10(9) and 1.4 ± 0.1×10(9), 2.2 ± 0.4 and 2.2 ± 0.7×10(9), and 2.5 ± 0.1 10(9) and 2.3 ± 0.5 10(9) (P<0.05) and daily sperm production observed were 2.1 ± 0.3×10(9), 2.8 ± 0.4×10(9), and 3.1 ± 0.7×10(9) (P<0.05). In conclusion, goats with greater scrotal bipartition have a greater capacity to produce reproductive cells that is reflected in a greater reproductive potential.
本研究旨在比较不同阴囊形态山羊的睾丸组织学和睾丸细胞群体以及精子发生效率。18 只山羊分为 3 组：I 组 - 无阴囊二分体的山羊，II 组 - 阴囊二分体长度占睾丸长度的 50%，III 组 - 阴囊二分体长度超过睾丸长度的 50%。在 I、II 和 III 组的山羊中，生精上皮的体积密度分别为 68.9±0.6%、71.5±2.8%和 73.4±4.7%（P<0.05），生精上皮的高度分别为 60.2±4.9μm、61.0±5.0μm和 73.1±6.6μm（P<0.05），I、II 和 III 组的生精小管总长度分别为 2091.9±27m、2172.5±24.1m 和 2340.1±14m（P<0.05），Sertoli 和 Leydig 细胞数分别为 1.8±0.4×10(9)和 1.4±0.1×10(9)、2.2±0.4 和 2.2±0.7×10(9)、2.5±0.1×10(9)和 2.3±0.5×10(9)（P<0.05），每日精子产量分别为 2.1±0.3×10(9)、2.8±0.4×10(9)和 3.1±0.7×10(9)（P<0.05）。总之，阴囊二分体较大的山羊具有更大的产生生殖细胞的能力，这反映在更大的生殖潜力上。
