Dalga S, Koçak S
Department of Anatomy, Faculty of Veterinary Medicine, Kafkas University, Kars-36100 / Turkey.
Department of Surgery, Faculty of Veterinary Medicine, Kafkas University, Kars-36100 / Turkey.
Arch Razi Inst. 2025 Feb 1;80(1):139-145. doi: 10.32592/ARI.2025.80.1.139. eCollection 2025 Feb.
The Norduz region, which is located inside the boundaries of the Gürpınar district of Van province, is home to the Norduz sheep, a breed of Akkaraman sheep. A sheep breed that is only bred in the Norduz region is the Norduz sheep. It has proven to be able to adjust to the severe weather in Eastern Anatolia, and it has shown distinct performance metrics that set it apart from other breeds. In this work, the Norduz sheep's mandible was analyzed and inspected utilizing a geometric morphometric approach. By using principal component analysis, principle components in multidimensional data sets were found. Using discriminant function analysis, the differences between the samples were found. The study materials used to accomplish this came from Van slaughterhouses. Gender was a factor of interest, so a total of 20 mandibles (10 female and 10 male) were chosen for analysis. First, the skull's mandibles were taken out. The underlying muscles were then dissected. The mandibles were then heated for 20 to 30 minutes, and then hydrogen peroxide was used to bleach them. After drying, the mandibles were shot from the same 20-cm distance. Photographs of the mandibles' left lateral surfaces were captured. These variations were also subjected to formal and statistical studies. There were sixteen significant variations found using the main component analysis. The observed shape differences were explained by the first three variances in 58,647% of cases. The results of the discriminant function analysis, which produced the best results for gender discrimination, were quite pleasing, showing that people were clearly and distinctly different from one another. According to the previously indicated investigations, information was obtained about the anatomical traits and adaptations of the Norduz sheep mandible, which was used as a model case study in this area.
诺尔杜兹地区位于凡省居尔皮纳尔区境内，是阿克卡拉曼羊品种之一的诺尔杜兹羊的产地。仅在诺尔杜兹地区繁育的绵羊品种就是诺尔杜兹羊。事实证明，它能够适应东安纳托利亚的恶劣天气，并且展现出了使其有别于其他品种的独特性能指标。在这项研究中，采用几何形态测量法对诺尔杜兹羊的下颌骨进行了分析和检查。通过主成分分析，找到了多维数据集中的主成分。利用判别函数分析，发现了样本之间的差异。用于完成此项研究的材料来自凡省的屠宰场。性别是一个研究因素，因此总共选取了20个下颌骨（10个雌性和10个雄性）进行分析。首先，取出颅骨的下颌骨。然后解剖其下面的肌肉。接着将下颌骨加热20至30分钟，之后用过氧化氢对其进行漂白。干燥后，从相同的20厘米距离对下颌骨进行拍摄。拍摄了下颌骨左侧表面的照片。这些差异也进行了形式和统计研究。通过主成分分析发现了16个显著差异。在58.647%的案例中，观察到的形状差异由前三个方差解释。判别函数分析的结果在性别区分方面产生了最佳效果，结果相当令人满意，表明不同性别之间存在明显差异。根据先前所示的调查，获得了有关诺尔杜兹羊下颌骨的解剖特征和适应性的信息，在该领域中它被用作典型案例研究。
