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Au Niger, la longue saison seche rend difficile l’alimentation des animaux : les pâturages, base de la ration alimentaire sont trop pauvres pour couvrir les besoins de production qualitatifs et quantitatifs des animaux. Cette etude porte sur l’incorporation de differentes doses d'acide malique dans la ration alimentaire des chevreaux roux de Maradi afin d’evaluer son effet sur l’ingestion des rations, l’indice de consommation, la croissance et le rendement carcasse. Quarante (40) chevreaux d’âge compris entre 7 a 8 mois et d’un poids vif moyen de 10,77 ± 0,19 kg ont ete repartis au hasard en quatre (4) lots de 10 tetes chacun. Les rations distribuees sont composees de fane de niebe, de son de ble et de l’acide malique. La ration du lot temoin (T0) ne contenait pas d’acide malique. Les rations des lots T1, T2 et T3 comportent respectivement 3, 6 et 9 g d’acides malique par kg de concentre. A l’issue de l’experimentation qui a dure 240 jours, les animaux soumis au traitement T3 ont obtenu le meilleur gain moyen quotidien (GMQ) soit 117,42 ± 31,04 g/jr suivi des animaux du lot T2 (109,57± 26,98 g/jr), puis les animaux du lot temoin T0 (102,85± 25,01g/jr) et ceux du lot T1 (86,21± 19,47g/jr). Les analyses n’ont montre aucune difference significative au seuil de 5% entre les lots supplementes et le temoin pour les parametres comme la consommation alimentaire (P = 0,951), le poids corporel (P = 1,000) et le poids des carcasses (P=0,68). L’indice de consommation de fane et son de ble le plus eleve a ete obtenu avec le lot temoin respectivement 9,12 et 6,06. L’acide malique peut etre incorpore a une dose allant jusqu’a 9 g/kg de ration et permettre ainsi l’assimilation des aliments et l’obtention d’une bonne performance de croissance. Mots cles : Chevreaux roux, ration, acide malique, supplementation, Maradi, Niger. English Title: Supplementation by a food additive on weight gain and carcass yield of redhead kids in Maradi, Niger In Niger, the long dry season makes it difficult to feed animals: pastures, the basis of the food ration, are too poor to cover the qualitative and quantitative production needs of animals. This study investigates the incorporation of different doses of malic acid into the diet of redhead kids in Maradi to evaluate its effect on dietary intake, consumption index, growth and carcass yield. Forty (40) kids between 7 and 8 months old with an average live weight of 10.77 ± 0.19 kg were randomly assigned to four (4) batches of 10 heads each. The feeds distributed are composed of bean top, wheat bran and malic acid. The feed of the control batch (T0) did not contain malic acid. The feeds of batches T1, T2 and T3 comprise respectively 3, 6 and 9 g of malic acid per kg of concentrate. At the end of the experiment, which lasted 240 days, the animals subjected to the T3 treatment obtained the best average daily gain (GMQ) ie 117.42 ± 31.04 g/day followed by the animals of the T2 batch (109, 57 ± 26.98 g/day), then the animals of control batch T0 (102.85 ± 25.01 g/day) and those of batch T1 (86.21 ± 19.47 g/day). No significant difference is showed by the analysis at the 5% level between the supplemented batches and the control batch for parameters such as food consumption (P = 0.951), body weight (P = 1.000) and carcass weight (P = 0.68). The highest consumption index of bean top and wheat bran was obtained with the control group respectively 9, 12 and 6, 06. Malic acid can be incorporated at a dose of up to 9 g/kg of diet and thus allow the assimilation of food and obtaining a good growth performance.  Keywords : Redhead kids, feed, malic acid, supplementation, Maradi, Niger.

international journal of biological and chemical sciences

Effet de la supplémentation des rations par un additif alimentaire sur la croissance pondérale et le rendement carcasse des chevreaux Roux de Maradi au Niger