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ORIGINAL ARTICLE
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Tyrosine hydroxylase-immunopositive cells and melanin in the mesencephalon of Yugan black-bone fowl


1 Department of Veterinary Medicine, College of Life Science and Engineering, Foshan University, Foshan 528231, China
2 Department of Veterinary Medicine, College of Life Science and Engineering, Foshan University, Foshan 528231; Department of Veterinary Medicine, College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045, China

Correspondence Address:
Haiquan Zhao,
College of Life Science and Engineering, Foshan University, Foshan 528231
China
Hui Zhang,
College of Life Science and Engineering, Foshan University, Foshan 528231
China
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/JMAU.JMAU_50_20

Background: The Yugan blackbone fowl (YBF) is a special poultry with hyperpigmentation in various organs, including feather. However, the mechanism of hyperpigmentation is limited, and the melanic information of other organs except skin is rare. Aims and Objectives: In this study, we attempt to get an insight of the mechanism of melanogenesis of birds. Materials and Methods: The mesencephalon of YBF was observed by light microscopy with hematoxylineosin and tyrosine hydroxylase (TH) immunohistochemistry. Results: The TH immunopositive cells were found in the mesencephalon. Moreover, the melanin was also observed in the connective tissue of the mesencephalon. Conclusion: Our results confirmed the existence of melanin and TH immunopositive cells in the mesencephalon of YBF. These results provide a reference for further study on the mechanism of melanogenesis/hyperpigmentation in birds.


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