Skin and Abdominal Fascia Melanization in Broiler Chickens

Rocio Crespo; Manuel Pizarro

doi:10.1637/7425-082405R.1

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Rocio Crespo,¹ Manuel Pizarro²

¹California Animal Health and Food Safety Laboratory System, Fresno Branch, University of California, Davis, 2789 South Orange Avenue, Fresno, CA 93720
²Departamento de Anatomía Patológica, Facultad de Veterinaria, Universidad Complutense de Madrid, 28040 Madrid, Spain

Abstract

Increased trimming and consequent carcass downgrade was experienced in a broiler flock. Condemned birds had gray to black pigmentation of the subcutaneous tissue and fat of the abdomen, and bluish pigmentation of the shanks. Histopathology revealed accumulation of melanin in these tissues. No significant bacteria were isolated. Accumulation of melanin in the skin and fascia is because of the cumulative and interactive effects of several genes. Additionally, pigmentation of abdominal fat has a high correlation with accumulation of melanin in the skin of the shanks. Although melanization of the skin and abdominal fascia is not harmful to people, it may cause severe economic losses to the producer.

Citation Download Citation

Rocio Crespo and Manuel Pizarro "Skin and Abdominal Fascia Melanization in Broiler Chickens," Avian Diseases 50(2), 309-311, (1 June 2006). https://doi.org/10.1637/7425-082405R.1

Received: 24 August 2005; Accepted: 1 December 2005; Published: 1 June 2006

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