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Vascularization of the Fleshy Comb in the Domestic Chicken

Identifieur interne : 000E70 ( Istex/Corpus ); précédent : 000E69; suivant : 000E71

Vascularization of the Fleshy Comb in the Domestic Chicken

Auteurs : B. Vollmerhaus ; S. Reese ; H. Roos

Source :

RBID : ISTEX:03233B44223B0C540409BE93BC489E97C62EF3DE

Abstract

Up to now little is known about the vascularization of the chicken fleshy comb (crista carnosa). In order to evaluate the vascularization of the crista carnosa of the cook (breed White Leghorn), corrosion casts were created by injecting Plastoid into the internal carotid as described by Schummer (1951). Specimens were investigated by stereomicroscopy and scanning electron microscopy (SEM). Generally the dermis is highly vascularized by two capillary networks, which are localized beneath the epithelium and beneath the dermal papillas. The dense subepithelial network is characterized by the presence of sinusoid vessels. In the subcutaneous plexus numerous arteriovenous anastomoses of different types occur. Additionally there are arteriovenous anastomoses between the main vessels reaching the indentations of the comb. Our results show the presence of superficial and dense capillary networks and arteriovenous anastomoses are the anatomical basis for the functions of the chicken comb in mating behaviour and thermoregulation.

Url:
DOI: 10.1111/j.1439-0264.2005.00669_126.x

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ISTEX:03233B44223B0C540409BE93BC489E97C62EF3DE

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