Collagen Content and Collagen Fiber Architecture in the Skin of Shamo Chicken, a Japanese Game Fowl.

IF 1.8 4区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE
Journal of Poultry Science Pub Date : 2023-10-28 eCollection Date: 2023-01-01 DOI:10.2141/jpsa.2023026
Shotaro Nishimura, Sayaka Arai, Yoshinao Z Hosaka
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Abstract

Collagen content and collagen fiber architecture in the skin of Shamo chickens were compared between sexes and body parts. Cervical, thoracic, dorsal, femoral, and crural skin samples were collected and their collagen content was analyzed. Collagen fiber specimens were prepared for scanning electron microscopy using the cell maceration method with a NaOH solution. Sex differences in collagen content were only observed in the femoral skin of mature chickens, but not in 10-week-old chicks. The difference in collagen content between body parts was obvious; femoral and crural skin had higher collagen content than those of other parts in both sexes. Scanning electron microscopy indicated that the collagen fiber architecture was quite different between the superficial and deep layers in the dermis, with the former consisting of loosely tangled band-like collagen fibers, and the latter composed of thick and dense layers of collagen bundles in a parallel arrangement. The width of collagen fibers in the superficial layer of the dermis differed between sexes in the dorsal, femoral, and crural skin. From these results, it is likely that the difference in collagen content in the femoral skin is not due to sex hormones but other factors, such as mechanical stimulation in daily activity. Additionally, collagen fiber width in the superficial layer is likely related to the difference in collagen content between sexes and between body parts.

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日本野鸡沙磨鸡皮中的胶原蛋白含量和胶原蛋白纤维结构。
比较了沙磨鸡不同性别和不同身体部位皮肤胶原含量和胶原纤维结构。采集颈、胸、背、股和脚的皮肤样本,并分析其胶原蛋白含量。使用NaOH溶液的细胞浸渍法制备胶原纤维样品用于扫描电子显微镜。胶原含量的性别差异仅在成熟鸡的股皮中观察到,而在10周龄的雏鸡中没有观察到。身体各部位胶原含量差异明显;股骨和小腿皮肤的胶原蛋白含量高于其他部位。扫描电子显微镜显示,真皮浅层和深层的胶原纤维结构截然不同,前者由松散缠结的带状胶原纤维组成,后者由平行排列的厚而致密的胶原束层组成。在背侧、股侧和脚侧皮肤中,真皮浅层中胶原纤维的宽度因性别而异。从这些结果来看,股骨皮肤中胶原蛋白含量的差异可能不是由于性激素,而是其他因素,如日常活动中的机械刺激。此外,浅层胶原纤维的宽度可能与性别之间和身体部位之间胶原含量的差异有关。
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来源期刊
Journal of Poultry Science
Journal of Poultry Science AGRICULTURE, DAIRY & ANIMAL SCIENCE-
CiteScore
2.80
自引率
13.30%
发文量
26
审稿时长
12 months
期刊介绍: The Journal of Poultry Science will publish original reports and reviews which either make an original contribution to fundamental science or are of obvious application to the industry. Subjects which are covered include: breeding and genetics, nutrition and feeds, physiology, reproduction, immunology, behavior, environmental science, management and housing welfare, processing and products, and health in poultry. Submission of original articles to the Journal is open to all poultry researchers. The review articles are invited papers written by international outstanding researchers. Articles will be published in English, American style.
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