Agricultural and agro-industrial by-products are not valued enough in Northern Côte d’Ivoire where farm animals feeding is a major problem. This work focuses on study of physicochemical and nutritive properties of flours of cashew apple, mango peels and mango seed kernel in order to use them for ruminants feeding. Results of analysis show that all flours studied have an acid pH between 3.7 ± 0.14 and 4.30 ± 0.38. Moisture of different flours are low values and therefore high levels of dry matter varying from 88.09 ± 0.86 to 89.47 ± 0.26 %. Cashew apple flour possess high level of ash with 5.67 ± 0.85 % while those of mango seed kernel content lowest level with 1.87 ± 0.45 %. For minerals composition, mango peels and cashew apple flours have high concentrations respectively of calcium (99.29 ± 1.47 mg/100g) and phosphorus (136.59 ± 0.75 mg/100g). According to organic compounds, these three flours have high levels of carbohydrates between 60.59 ± 0.55 and 63.34 ± 0.35 %. Their lipids are low concentrations varying from 3.71 ± 0.45 to 5.05 ± 0.33 %. All flours have intermediate proteins contents between 18.45 ± 0.71 and 19.17 ± 0.41 %. Finally, these flours are a good source of energy with values from 297.05 ± 2.05 to 311.69 ± 4.05 Kcal/100g of dry matter. These results suggest that flours of cashew apple, mango peels and mango seed kernel can be combined in formulation of livestock feed for ruminants.