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The skeletal system of chickens shares basic similarities with other mammals but has distinct differences that aid in their flight and movement. Notably, chickens possess additional coracoid bones in their shoulders that enhance wing support and mobility. Their cervical vertebrae form an S-shaped column that acts as a spring to absorb impact during landing. Many bones, including the vertebrae, are pneumatic, connecting to the respiratory system, which reduces body weight and improves flight efficiency. Understanding these features is crucial for poultry improvement projects.
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Poultry Improvement Project The Skeletal System
Skeleton of the Chicken • Basic skeleton is similar to other mammals with several differences. • Birds possess a pair of extra bones in the shoulder area called the coracoids. • This pair of bones facilitates wing movement and offers additional support for the wings. • Also the cervical vertebrae (neck bones) form an S-shaped column connecting the body to the head.
When the bird lands, the pressure is exerted thoughout the body and the S-shaped column acts as a spring. • The vertebrae along the trunk and body are fused together to provide support for the wings. • Skeletal system is connected to the respiratory system and many bones are pneumatic. • Pneumatic bones are hollow and are connected to the respiratory system, thereby serving as a reservoir for air and reducing the weight of the bird for flight.
Vertebrae Column • Includes • skull • humerus • keel • clavicle • lumbar • sacral
