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International Journal of Morphology

versión On-line ISSN 0717-9502

Resumen

OLUKOLE, S. G. Morphometric Investigations on the Horns of Uda Rams in Nigeria: Implications in Veterinary Clinical Practice. Int. J. Morphol. [online]. 2010, vol.28, n.2, pp.533-536. ISSN 0717-9502.  http://dx.doi.org/10.4067/S0717-95022010000200033.

Morphometric studies were carried out on the horns of 60 Uda rams. The mean values for the relative horn weight, weights of the right and left horns were 0.67%, 219.5g and 208g respectively. The mean values for the lengths of the right and left horns and the horn base circumference were 25.6cm, 27.4cm and 17.4cm respectively. There were significant differences (p< 0.05) between the lengths of the right and left horns; and between the weights of the right and left horns. There were also strong positive correlations between the body weight of the animals and the length of the horns. A graph of the length of the right horn against the body weight of the animals with a significant deviation from zero at 95% confidence intervals yielded a slope value of 0.4535, being an index that can be used to estimate the approximate body weight of a ram once the length of the right horn is known. This index, the first of its kind in literature, is therefore named the body weight-horn length (BWHL) index. The results obtained in this study will serve as valuable tools in weight estimation in animal management and drug administration in Veterinary clinical practice. It also provides a baseline data on the horns of Uda rams and a template for comparative regional anatomy of the horns of ruminants.

Palabras clave : Uda rams; Relative horn weight; Horn length.

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