Assis B M, Silva L A F, Lima C R O, Gouveia R F, Vulcani V A S, de Sant'Ana F J F, Rabelo R E
Universidade Federal de Goiás, Regional Jataí, Jataí, GO, Brazil.
Escola de Veterinária e Zootecnia, Universidade Federal de Goiás, Goiânia, GO, Brazil.
Anat Histol Embryol. 2017 Oct;46(5):439-445. doi: 10.1111/ahe.12288. Epub 2017 Jul 31.
The aim of this study was to describe the microstructure of hoof capsules of the buffalo. In addition, the study emphasized the morphometric aspects of the horn tubules, the Vickers nanohardness of the dorsal and abaxial walls and sole of the digits of the thoracic and pelvic limbs of the buffalo. The abaxial wall in the thoracic and pelvic digits showed larger diameter of the horn tubules when compared to all dorsal wall and sole. In addition, the abaxial wall of the thoracic digits showed larger diameter of the horn tubules when compared with the pelvic digits. According to the three-dimensional microtomography, the dorsal wall was higher in density compared with the abaxial wall. The latter exhibited an intermediate density, while the sole showed the lowest density. The Vickers nanohardness test showed that there was no difference in hardness and resistance between the experienced regions. However, the elastic modulus was greater on the transversal section of the hoof capsule. In conclusion, the results of the current study show that modern technologies such as microtomography and subsequent imaging can be used to investigate details of the basic morphology in different regions of the buffalo's hoof.
本研究的目的是描述水牛蹄匣的微观结构。此外，该研究还着重探讨了角小管的形态计量学特征、水牛胸肢和盆肢趾部背侧与掌侧（跖侧）壁及蹄底的维氏纳米硬度。与所有背侧壁和蹄底相比，胸肢和盆肢趾部的掌侧（跖侧）壁角小管直径更大。此外，与盆肢趾部相比，胸肢趾部的掌侧（跖侧）壁角小管直径更大。根据三维显微断层扫描，背侧壁的密度高于掌侧（跖侧）壁。掌侧（跖侧）壁密度中等，而蹄底密度最低。维氏纳米硬度测试表明，不同受试区域在硬度和抗性方面没有差异。然而，蹄匣横切面上的弹性模量更大。总之，本研究结果表明，显微断层扫描及后续成像等现代技术可用于研究水牛蹄不同区域的基本形态细节。
