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Objectif: L’objectif de l’etude consistait a determiner la puberte des caprins, preciser l’âge a la 1 re mise-bas et a assurer une bonne gestion de la reproduction de la chevre a Lubumbashi. Les investigations, menees de decembre 2010 a mai 2011, s’etaient appuyees sur 25 chevrettes de race locale ayant fait l’objet de caracterisation zootechnique. Methodologie et Resultats: Le suivi de la reproduction s’etait effectue par des visites mensuelles. Le constat de gestation par echographie des femelles selectionnees, etait effectue a une frequence trimestrielle. Les donnees etaient traitees par la comparaison des differents axes d’elevage par rapport a leurs coefficients de correlation en mesurant le niveau de liaison entre deux variables correlatives telles que le poids et la taille d’un individu. Les resultats consistaient en une mise en evidence d’une disproportion entre les femelles gestantes et non gestantes (21 vs 79%). Les resultats observes presentaient des elevages avec plus de femelles a 8 dents de lait par rapport a celles a 2 dents adultes (60 vs 40%). Le poids et la taille au garrot des individus a 8 dents de lait (9,9-18 kg et 43,5-49,5 cm) et a 2 dents d’adultes (14,8-22,4 kg et 49,1-52,0 cm) avaient ete precises pour les differents axes d’elevage. Il en etait de meme des chevrettes gestantes (20,8-31,6%) dont le poids variait de 8,8 a 18,95 kg. Conclusions et application des resultats: Les individus dont l’âge correspondait a 8 dents de lait avaient presente une proportion nulle de mise-bas. A un âge correspondant a 2 dents d’adultes, les proportions de mise-bas correspondaient a 30,8%. Les mise-bas observees chez les individus a 2 dents d’adultes permettaient de determiner le moment de puberte a 10 mois. En perspectives, il serait utile de determiner les facteurs d’influence d’une puberte tardive, notamment l’environnement alimentaire. En effet, une bonne gestion alimentaire permettra a l’eleveur de pallier le caractere tardif de la puberte, un des facteurs responsables de l’absence de rentabilite de cet elevage familial. L’atteinte d’une puberte precoce est un atout pour une productivite numerique au travers des mise-bas. Mots-cles: chevrettes, poids et taille, gestation, âge a la 1 re mise-bas, puberte, elevage periurbain, Lubumbashi English Abstract Objective: The objective of the study was to determine caprine puberty, specify age at 1st farrowing and ensure good management of goat breeding in Lubumbashi. Investigations, conducted from December 2010 to May 2011, were based on 25 young local breeds that had been zootechnically characterized. Methodology and Results: Monitoring of breeding was done by monthly visits. The ultrasound gestation of selected females was performed on a quarterly basis. Data were processed by comparing different rearing axes with respect to their correlation coefficients by measuring the level of linkage between two correlative variables such as weight and height of an individual. Results consisted of a disproportion between pregnant and non-pregnant females (21 vs 79%). Results observed showed farms with more females with 8-teeth milk than those with 2-adult teeth (60 vs 40%). The weight and height at the withers of 8-teeth milk (9.9-18kg and 43.5-49.5 cm) and 2-adult teeth (14.8-22.4 kg and 49.1-52.0 cm) were specified for different rearing axes. The same was true for pregnant goats (20.8 31.6%), whose weight varied from 8.8 to 18.95 kg. Conclusion and application of findings: Individuals whose age was 8-teeth milk had a zero proportion of farrowing. At an age corresponding to 2-adult teeth, the farrowing proportions corresponded to 30.8%. Feedings observed in adults with 2-adult teeth were used to determine puberty at 10 months. In perspective, it would be useful to determine influencing factors of late puberty, including food environment. Indeed, good food management will allow the breeder to palliate the tardiness of puberty, one of the factors responsible for the lack of profitability of this family breeding. Achieving early puberty is an asset for digital productivity through deliveries. Keywords: young female caprine, weight and height, gestation, age at 1st birth, puberty, peri-urban farming, Lubumbashi

Détermination de la puberté et de l’âge à la première mise-bas des chevrettes en élevage familial à Lubumbashi, République Démocratique du Congo