Macroscopic and Microscopic Examination of Uropygial Gland in Young and Adult Quails (Coturnix japonica)

Öz

This study aimed to evaluate the anatomical and histological aspects of the uropygial gland of young and adult quails (Coturnix japonica). Uropygial glands of 20-30 day-old (young, n: 6) and 150-200 day-old (adult, n: 6) quails were used as tissue material. Tissue samples were fixed in 10% formaldehyde for histological examination. After routine procedures, Crossmon’s trichrome staining was performed on tissue sections. Live weight (LW), gland weight (GW), glandula uropygialis width (GUW) and length (GUL), and papilla uropygialis width (PUW) and length (PUH) measurements were performed for morphological evaluations. Additionally, relative gland weight index (RGWI), lobus glandula uropygialis index (LGUI), and glandula uropygialis length index (GULI) values were calculated. LW and GW were higher in the adult quails (p<0.05). However, GUW, GUL, PUW, PUH, RGWI, LGUI, and GULI did not differ between young and adult quails (p>0.05). In both periods, the glandula uropygialis consisted of two lobes. Each lobe had a central cavity and an excretory duct. Tubules were divided into peripheral and central. The tubules were lined with stratified epithelium containing basal, intermediate, secretory, and degenerative cells. Peripheral tubules were more dominant in both periods. In the adult quails, the central cavity grew larger, and tubular structures and the connective tissue between the tubules showed more development. The number of secretory cell layers in both the central and peripheral tubules increased. Also, fat droplets were observed in many secretory cells in the peripheral tubules. Consequently, secretion increased, and structural changes formed in the uropygial glands of adult quails

Anahtar Kelimeler

• Adult period
• Histology
• Morphology
• Quail
• Uropygial gland
• Young period

Genç ve Erişkin Bıldırcınlarda (Coturnix japonica) Üropigial Bezin Makroskopik ve Mikroskopik İncelenmesi

Öz

Bu çalışma genç ve yetişkin bıldırcınların (Coturnix japonica) üropigial bezinin anatomik ve histolojik özelliklerinin belirlenmesi amaçladı. 20-30 günlük (genç, n:6) ve 150-200 günlük (yetişkin, n: 6) bıldırcınların üropigial bezleri doku materyali olarak kullanıldı. Histolojik inceleme için doku örnekleri %10 formaldehitte tespit edildi. Rutin işlemlerde sonra, doku kesitlerine Crossmon'un üçlü boyaması yapıldı. Morfolojik değerlendirmeler için canlı ağırlık (LW), bez ağırlığı (GW), glandula üropigial genişliği (GUW) ve uzunluğu (GUL) ile papilla üropigial genişliği (PUW) ve uzunluğu (PUH) ölçümleri alındı. Ayrıca, relatif bez ağırlık indeksi (RGWI), lobus glandula üropigial indeksi (LGUI) ve glandula üropigial uzunluk indeksi (GULI) değerleri hesaplandı. LW ve GW yetişkin bıldırcınlarda daha yüksekti (p<0.05). Ancak, GUW, GUL, PUW, PUH, RGWI, LGUI, and GULI genç ve yetişkin bıldırcınlar arasında farklı değildi (p>0.05). Her iki dönemde, üropigial bez iki lobdan oluşuyordu. Her bir lob bir merkezi boşluğa ve akıtıcı kanala sahipti. Tubuller periferal ve merkez olarak ikiye ayrıldı. Tubuller bazal, intermediyer, sekretorik ve dejeneratif hücrelerden oluşan çok katlı epitel ile kaplıydı. Periferal tubuller her iki dönem de baskındı. Yetişkin bıldırcınlarda, merkezi boşluk büyüdü ve tubuller arasındaki bağ dokusu ve tubuller daha fazla gelişme gösterdi. Hem merkezi hem de perifer tubullerdeki sekretorik hücre katmanlarının sayısı arttı. Ayrıca, perifer tubullerdeki birçok sekretorik hücresinde yağ damlacıkları gözlenlendi. Sonuç olarak, yetişkin bıldırcınların üropigial bezlerinde salgı olayı arttı ve yapısal değişiklikler şekillendi.

Anahtar Kelimeler

• Bıldırcın
• Genç dönem
• Histoloji
• Morfoloji
• Üropigeal bez
• Yetişkin dönem

Kaynakça

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