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International Journal of Morphology

versión On-line ISSN 0717-9502

Resumen

OLOPADE, James Olukayode; ONWUKA, Silas Kalu; BALOGUN, Babatunde Abiodun  y  OKE, Bankole Olusiji. Morphometric Investigation of the Brainof West African Dwarf Sheep in Nigeria . Int. J. Morphol. [online]. 2005, vol.23, n.2, pp.99-104. ISSN 0717-9502.  http://dx.doi.org/10.4067/S0717-95022005000200001.

Morphometric studies were carried out on the brains of twenty West African Dwarf (WAD) sheep using frozen unfixed specimen. The mean brain weight was 69.14g, while the mean brain length and depth were 7.48cm and 4.17cm, respectively. The mean length of the cerebrum and cerebellum were 5.08cm and 2.27cm, respectively. The relative brain weight was 0.08% while the relative weight of the head was 0.8%. There was a significant difference (p < 0.05) in the weight of head, weight of brain, brain length and depth and in the relative brain weight of animals weighing 10kg and above, compared with those below this weight mark. The values of the first four parameters were higher while the fifth was lower. Animals aged one year and above, had significantly heavier body weights and longer cerebrum (p < 0.05), than those below this age mark, the latter however had significantly lower relative brain weight and also weight of brain to weight of head. The results obtained in this study will be useful in Comparative Neuroanatomy and as baseline research data in neuropathology, pharmacology, anaesthesiology and neurophysiology

Palabras clave : Anatomy; Brain; West African dwarf sheep.

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