National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692 Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The present study was carried out on the sternum of adult Blue bull (Boselaphus tragocamelus) of either sex. It was found that the sternum was a long plate of osteo-cartilagenous structure that was located at the mid-line of the floor of the thorax. It was made up of seven segments or sternebrae and was found to be wider, flatter and relatively longer than in the horse. The cranial end was formed by a wedge shaped and laterally compressed manubrium sterni that had extensive facets dorso-laterally for articulation with the first pair of costal cartilages. The manubrium sterni was followed by six similar segments, the sternebrae that were much longer than broad. The body of the sternum was flat and thick. It widened towards the caudal aspect, but became narrower behind the last pair of costal facets. The dorsum of the body had the impression of superior or dorsal sternal ligament. The ventral surface became more prominent on the second and third sternebrae and was concave further back. The lateral borders of the sternum were thick, notched that provided passage for the blood vessels. The lateral borders accommodated seven pairs of sternal facets on either side of the intersternal junctions. The eighth pair costal cartilages joined the sternum between 6th and 7th sternebrae along with the seventh pair costal cartilages. Biometrical observations on different parameters reflected significance (P<0.05) differences between the sexes of this species.
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