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العنوان
Some morphometric studies on the bony skeleton of Ostrich /
المؤلف
Kassem, Menna Allah Mostafa.
هيئة الاعداد
باحث / منة الله مصطفى قاسم
مشرف / مدحت احمد العياط
مشرف / ريم رشاد طاحون
الموضوع
Hyoid bone. Mandible. Tarsometatarsus. Skull.
تاريخ النشر
2023.
عدد الصفحات
125 p. :
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
البيطري
تاريخ الإجازة
1/1/2023
مكان الإجازة
اتحاد مكتبات الجامعات المصرية - Anatomy and Embryology
الفهرس
Only 14 pages are availabe for public view

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Abstract

A comprehensive morphometric study was conducted on the bony elements of ostrich as a whole. The study involved 12 ostriches: 10 males and two females ranging from 1-3 years of age and weighing 120 kg on average. The bony elements were collected either sporadically or from the recently died cases. The ostrich skeleton was divided into two parts: the axial and appendicular skeletons. The axial skeleton comprised the cranium, sclerotic ring, mandible, hyoid bone, vertebral column, ribs, and sternum. The cranium was divided into two parts: the neurocranium and the splanchnocranium. The length of the cranium was 20.00±1.09 cm. There were 54 vertebrae in the vertebral column including 18 cervical vertebrae, 7 separated thoracic vertebrae, a synsacrum, 9 separated caudal vertebrae, and a pygostyle. The sternum was devoid of keel and its length is 22.50±0.29 cm. The appendicular skeleton was comprised of the pectoral girdle, the wing, the pelvic girdle, and the bones of the pelvic limb. The scapulocoracoid bone formed the ostrich’s pectoral girdle, where the clavicle was absent. The wing consisted of the humerus, ulna, radius, radial carpal bone, ulnar carpal bone, carpometacarpus, and three wing digits. Os coxae consisted of ilium, ischium and pubis. The femur was shorter than the tibiotarsus. The femur length was 23 cm, while the tibiotarsus length was 52.00± 0.50 cm. The ostrich had two patellae: proximal and distal patella. An extensive discussion and comparison were conducted between the results obtained in ostriches and with their counterparts from other birds.