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Four-Legged Broiler Chicken with Two Cloacae and Three Ceca

Grasso M. Ebako, Teresa Y. Morishita and John S. Mattoon
Avian Diseases
Vol. 46, No. 1 (Jan. - Mar., 2002), pp. 234-238
Stable URL: http://www.jstor.org/stable/1592811
Page Count: 5
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Four-Legged Broiler Chicken with Two Cloacae and Three Ceca

Abstract

This case report examines an Arbor Acres female × Peterson male crossbred 6-wk-old female broiler chicken with four legs, two cloacae, and three ceca. The intestines occupied the caudodorsal portion of the abdominal cavity with three ceca attached to the terminal end of the ileum. The left lateral cecum was larger and had a divided distal end that terminated into 2-cm-long blind sacs. The rectum was dilated and divided into two cloacae that each opened on the dorsolateral aspect of both the right and left cloacal elevator muscles. The two extra legs were attached to the pygostyle by cartilage and skin tissue. Both femoral heads of the extraneous legs were fused together. The extra legs were smaller in size (approximately 17 cm in length) compared with the normal legs (approximately 22 cm). The femoral heads of the two normal legs were disarticulated from the acetabulum. /// Este reporte de caso muestra el análisis de una polla híbrida de 6 semanas de edad, proveniente del cruzamiento de una línea hembra Arbor Acres con una línea macho Peterson, que presentaba cuatro patas, dos cloacas y tres sacos ciegos. Los intestinos ocupaban la porción dorsocaudal de la cavidad abdominal con tres sacos ciegos unidos a la porción terminal del íleum. El ciego lateral izquierdo era mayor y su porción distal estaba dividida en dos sacos ciegos de 2 centímetros de longitud. El recto estaba dilatado y dividido en dos cloacas, cada cloaca se abría hacia la parte dorsolateral de ambos músculos elevadores de la cloaca. Las dos patas adicionales estaban unidas al pigostilo por cartílago y tejido cutáneo. Ambas cabezas femorales de los miembros inferiores adicionales estaban fusionadas entre sí. Las patas adicionales eran más pequeñas comparadas con las patas normales (aproximadamente 17 cm de longitud). Las cabezas femorales de las patas normales estaban desarticuladas de la cavidad acetabular.

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