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Developmental changes of skin quality from breast, back, and thigh of Pekin ducks from 1 to 6 weeks of age

文献类型： 外文期刊

作者： Li, Hao 1 ; Zheng, Wenxuan 1 ; Xin, Shuo 1 ; Hui, Ye 1 ; Zhu, Yijun 2 ; Lin, Xi 3 ; Zhang, Huaqi 4 ; Zhu, Yongwen 1 ;

作者机构： 1.South China Agr Univ, Coll Anim Sci, State Key Lab Livestock & Poultry Breeding, Guangdong Prov Key Lab Anim Nutr & Regulat, Guangzhou 510000, Peoples R China

2.Woman Biotechnol Co Ltd, Guangzhou 510000, Peoples R China

3.North Carolina State Univ, Dept Anim Sci, Raleigh, NC 27695 USA

4.Tongren Vocat & Tech Coll, Key Open Lab Chinese Vet Med State Ethn Affairs Co, Tongren 554300, Peoples R China

关键词： Pekin duck; Skin development; Skin quality; Collagen content

期刊名称：POULTRY SCIENCE （ 影响因子：4.2； 五年影响因子：4.5 ）

ISSN： 0032-5791

年卷期： 2025 年 104 卷 2 期

页码：

收录情况： SCI

摘要： Good skin quality not only improved carcass quality but also increased consumer demand for fresh poultry meat. This study aimed to investigate the developmental changes in skin growth and quality of Pekin ducks during 1-6 weeks of age. The skin samples were collected from the breast, back, and thigh tissues of six male ducks at the end of each week. The skin strength, skin thickness, and collagen content as well as the related gene expressions were determined for the evaluation of skin quality. The results showed that the body weight, absolute skin weight, areas, and density, epidermal and dermal thickness (breast and thigh), shearing force, piercing force (back and thigh), and collagen content in Pekin ducks increased linearly and quadratically with age, reaching a plateau at 5-6 weeks of age (P < 0.05). The mRNA expressions of IGF-1 and FGFR1 related to cell proliferation were highest in breast, back, and thigh of ducks at 3 weeks of age, while the mRNA expression of FGF14 and EGF associated with collagen synthesis reached maximum values at 5 weeks of age. Additionally, the mRNA expressions of IGF1R and FGFR2 were upregulated in breast and thigh skins of ducks at 1 week old and in back skin of ducks at 3 weeks old compared with birds at other weeks old (P < 0.05). In conclusion, the developmental pattern of skin growth and structure of Pekin ducks in a linear manner with increased age. The skin quality was increased in a quadratic manner, which was associated with the changes in mRNA expression of target genes related to cell proliferation and collagen synthesis.

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