Phenotypic characterization of draft donkeys within the Sudano-Sahelian zone of Cameroon

Ebangi A.L., Vall Eric. 1998. Phenotypic characterization of draft donkeys within the Sudano-Sahelian zone of Cameroon. Revue d'Elevage et de Médecine Vétérinaire des Pays Tropicaux, 51 (4) : 327-334.

Titre français : Caractérisation phénotypique des ânes de trait dans la zone soudano-sahélienne du Cameroun / Titre espagnol : Caracterizacion fenotipica de los burros de tiro en la zona sudano-saheliana de Camerun

Résumé : Data on age, sex, coat color, liveweight (LW), heart girth (HG), trunk length (TL) and height-at-withers (HW) for 743 donkeys within the Sudano-Sahelian region of Cameroon were recorded. The ages of the donkeys ranged from 0 to 13 years. The effect of age on liveweight, height-at-withers, heart girth and trunk length was highly significant (p < 0.001). The effect of coat color on liveweight and height-at-withers was not significant (p > 0.05). Male donkeys were generally heavier than female donkeys from 0 to 3 years of age. Thereafter, female donkeys became heavier than males (p < 0.002). The average liveweights of adult (6-13 years old) female and male donkeys (132.5 ± 2.3 and 123.2 ± 2.1 kg, respectively) may not have had any significant practical implications on the working capacity of the sexes, given that non visible pregnant female donkeys might have been included in the study. As a result, regression equations established for the estimation of liveweight were not gender discriminative. Consequently, the best prediction equations for donkeys' liveweights within the Sudano-Sahelian region were: - LW = HG2.826/4434.7 (adjusted R2 = 0.84) for one best fit variable with LW in kilograms and HG in centimeters. When trunk length, or height-at-withers, was considered for one best fit variable in the equation, the adjusted R2 values were 0.78 and 0.66, respectively; - LW = HG1.947.TL-0.845/3834.8 (adjusted R2 = 0.86) for two best fit variables with TL in centimeters. The inclusion of HW as a third variable in the equation did not modify R2 significantly.

Mots-clés Agrovoc : âne, animal de trait, conformation animale, mensuration corporelle

Mots-clés géographiques Agrovoc : Cameroun, Zone soudano-sahélienne

Classification Agris : L52 - Physiologie animale - Croissance et développement

Auteurs et affiliations

• Ebangi A.L., IARD (CMR)
• Vall Eric, CIRAD-EMVT-PPA (CMR) ORCID: 0000-0001-8231-3083

Source : Cirad - Agritrop (https://agritrop.cirad.fr/475756/)

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