Harner J P, Wilson J H
Br Poult Sci. 1985 Oct;26(4):543-8. doi: 10.1080/00071668508416846.
The effects of body size and cage profile on the shear strength of bones from caged layers aged 72 weeks were studied. Bones tested included the radius, ulna, humerus, femur, and tibiotarsus. The ultimate shear force of the femur, tibia, and humerus all increased as body size increased (P less than 0.01). The wing bones of birds housed in high profile cages had higher shear breaking loads than birds housed in low profile cages. The ultimate shear stresses of the bones were not affected by body size or cage profile. The radius had the highest shear stress (29.2 MPa), followed in descending order by the ulna (19.1 MPa), tibiotarsus, humerus (11.4 MPa) and femur (11.3 MPa).
研究了体型和笼型对72周龄笼养蛋鸡骨骼抗剪强度的影响。测试的骨骼包括桡骨、尺骨、肱骨、股骨和胫跗骨。随着体型增大，股骨、胫骨和肱骨的极限剪切力均增加（P小于0.01）。饲养在高型笼中的鸡的翼骨比饲养在低型笼中的鸡具有更高的剪切断裂载荷。骨骼的极限剪应力不受体型或笼型的影响。桡骨的剪应力最高（29.2兆帕），其次依次为尺骨（19.1兆帕）、胫跗骨、肱骨（11.4兆帕）和股骨（11.3兆帕）。
