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DISPROPORTIONATE DWARFISM IN TWO BOVINE SIBLINGS
Author(s) -
Carrig C. B.,
Grandage J.,
Seawright A. A.
Publication year - 1981
Publication title -
veterinary radiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.541
H-Index - 60
eISSN - 1740-8261
pISSN - 0196-3627
DOI - 10.1111/j.1740-8261.1981.tb01696.x
Subject(s) - dwarfism , anatomy , tibia , calcification , ossification , femur , skeleton (computer programming) , medicine , metatarsal bones , cartilage , lordosis , reduction (mathematics) , biology , radiography , pathology , surgery , biochemistry , geometry , mathematics , gene
Disproportionate dwarfism is reported in two bovine siblings. Affected animals were similar in appearance and were characterized by shortening of the limbs. Pelvic limbs were noticeably shorter than the pectoral limbs. The axial skeleton was not noticeably affected, but the back sloped because of the shorter pelvic limbs. Sloping of the back was accompanied by thoracic kyphosis and lumbar lordosis. Comparison of the length of bones from an affected animal with those from a normal animal indicated that major growth retardation occurred in the femur, tibia, and metatarsal bones. Histological examination of the physes indicated a reduction in cartilage cell maturation and matrix calcification. This was associated with a reduction of osteogenesis and the formation of thickened, shortened primary trabeculae surrounded by fibrous and poorly vascularized bone marrow.