L’objectif de l’étude a été d’apprécier la conformation et certaines mensurations de la race bovine Nélore dans le but de maitriser leurs aptitudes à la reproduction. Les animaux avaient trois (3) ans d’âge. Les mensurations et la conformation ont concernées 89 génisses et 28 taurillons en stade de reproduction, sur un troupeau de 2587 têtes. Les mensurations corporelles concernées ont été évaluées par la méthode traditionnelle à la toise et au mètre ruban. Le poids vif moyen des mâles a été de 418,97 kg ± 25,84 kg et celui des femelles de 333,67 ± 33,12 kg. La robe régulière est blanche, uniforme avec des membres sombres aux extrémités chez les mâles. La conformation indique de bonnes aptitudes bouchères et les mâles sont de grande taille. La hauteur au garrot a été de 1,54 ± 0,01 m et 1,48 ± 0,03 m pour les mâles et les femelles respectivement. La longueur scapulo-ischiale a indiqué 1,89 ± 0,03 m et 1,81 ±0,02 pour les mâles et femelles respectivement. Le périmètre thoracique de 1,82 ± 0.03 m et 1,72 ± 0,03 m respectivement pour les mâles et femelles. La liaison corrélative du poids vif a été plus marquée avec la hauteur au garrot (r= 0,926) qu’avec le périmètre thoracique (r= 0,81) et la longueur scapulo-ischiale (r= 0,730). Il est donc important que les éleveurs procèdent à l’étude des mensurations et de conformation des Nelores pour bien apprécier leurs aptitudes futures de reproductions dans une ferme. ABSTRACT The objective of the study was to highlight the morphometric characteristics and conformation of the Nélore bovine breed in order to control their breeding. The animals were all about three (3) years old. The measurements and conformation involved 89 heifers and 28 breeding bulls from a herd of 2,587 heads. The body measurements concerned were evaluated by the traditional method of the measuring board and measuring tape. The average live weight of males was 418.97 kg ± 25.84 kg and that of females 333.67 ± 33.12 kg. The Common coat colour is uniform white, with dark extremities in the males. The conformation indicates good beefing abilities and the males are large. The height at the withers was 1.54 ± 0.01 m and 1.48 ± 0.03 m for males and females respectively. The scapuloischial length of 1.89 ± 0.03 m and 1.81 ± 0.02 for males and females respectively and thoracic perimeter of 1.82 ± 0.03 m and 1.72 ± 0.03 m respectively for males and females. The correlation of body weight was more marked with the height at the withers (r = 0.926) than with the thoracic perimeter (r = 0.81) and the scapuloischial length (r = 0.730). It is therefore important that the breeders study the measurements and conformation in order to appreciate the future breeding abilities of the animals on a farm.
The objective of This sud wasp to évaluâtes the corrélation tween Age, Wight and scrotal circonférence for the propose of sélection Young bredin stock. Scrotal circonférence miaulements ère performe on 152 males frangin in Age frome 23 to 25 monts, witz Wight frangin frome 341.4 to 363.5 kg. For the sud of scrotal morphologie, the animaux ère classifie intox thrène groups accordant to the following criteria: G1 - animaux without scrotal bipartition, G2- animaux witz bipartition up to 10 mm, G3 - animaux witz bipartition greater than 10 mm and for the sud of testicular morphologie, the animaux ère also classifie intox thrène groups: semi-elongated testes (SA) and globular testes (G), elongated (A). The observed correlations of scrotal circonférence witz Age and Wight and tween Wight and Age of the animal ère high and positive, respectively 0.73, 0.71 and 0.57. The results of 152 observations of scrotal morphologie showed that 142 animaux (94.08%) ère classifie as G1, 7 (4.61%) as G2 and 2 (1.32%) as G3. The distribution of testicular morphologie (n = 152) showed a high concentration in the semi-elongated group 128 animaux, i.e. (84.21%), followed by the elongated group 14 (9.21%) and globular 10 (6.58%).
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