Karimi Hamid, Ranjbar Saraskanroud Mohammad, Balazadeh Koucheh Fatemeh
Department of Basic Science, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran.
Faculty of Veterinary Medicine, University of Urmia, Urmia, Iran.
Vet Med Sci. 2019 May;5(2):151-156. doi: 10.1002/vms3.133. Epub 2019 Feb 28.
Whether paired organs are equivalent has to be analyzed by assessing both structural and functional aspects. The present study compared the paired left and right testis from Ghezel sheep originating from Northwestern Iran (Azerbaijan) and Northeastern Turkey. Twenty-five pairs of testes were collected from mature Ghezel rams from Tabriz slaughterhouse. The two glands were compared for their size, weight and activity rate. Weight, length, width and thickness were measured. Then, paraffinized blocks were prepared by routine histological techniques and sections were stained by the haematoxylin-eosin method. Five 6 μm sections were prepared from each paraffinized block and 50 seminiferous tubules (STs) were analysed in each section for tubular differential index (TDI) and spermiogenesis index (SPI). TDI and SPI were compared between the paired left and right testes. Weight, length and thickness of left testes were significantly higher than in right testes (P < 0.05). Moreover, TDI and SPI were found to be higher in left testes than the right (P < 0.05).
成对器官是否等效必须通过评估结构和功能方面来进行分析。本研究比较了来自伊朗西北部（阿塞拜疆）和土耳其东北部的盖泽尔绵羊的左右成对睾丸。从大不里士屠宰场的成年盖泽尔公羊身上收集了25对睾丸。比较了两个腺体的大小、重量和活性率。测量了重量、长度、宽度和厚度。然后，通过常规组织学技术制备石蜡块，并用苏木精-伊红方法对切片进行染色。从每个石蜡块制备5个6μm的切片，并在每个切片中分析50个生精小管（STs）的小管差异指数（TDI）和精子发生指数（SPI）。比较了左右成对睾丸之间的TDI和SPI。左侧睾丸的重量、长度和厚度显著高于右侧（P<0.05）。此外，发现左侧睾丸的TDI和SPI高于右侧（P<0.05）。
