This study reviews the current state of knowledge on the roles of lysine and methionine in monogastric nutrition, and their potential availability in feedstuffs for pigs and chickens in Burkina Faso. It aims to better orient ongoing research to make these amino acids more available and optimize their content in local feed resources and their use in the rationing of pigs and chickens on intensive farms in Burkina Faso. Searches carried out mainly online using the Google Scholar search engine yielded a wide range of documents, which were filtered to retain only the most significant ones dealing with the above-mentioned themes. A total of 294 documents were identified, from which 126 references were selected and used for this literature review. Lysine and methionine are the most limiting amino acids in pig and chicken feed, in that their deficiency in rations affects feed efficiency, leads to reduced growth and dysfunctions in the organism. The methionine and lysine used in Burkina Faso are imported synthetic products that are not easily accessible due to their high cost. Their availability in certain ingredients can be improved by germination and/or heat treatment. Compliance with recommended lysine and methionine requirements in formulations for pigs and chickens is essential to optimize their utilization by the body, while reducing nitrogen losses and ensuring good productivity.

The study assessed the effects of diets incorporating mango feed on the weight and economic performance of local chickens in finishing. To do this, three rations R1 (mango + corn bran) and R2 (mango + rice bran) and CR (without mango) each corresponding to a batch of 30 chickens were tested for 06 weeks. The results show that the final weight of R1 (1061±10 g) was significantly lower than those of R2 and CR (1208±206 g) (p<0.05). The voluntary food consumption of R2 (72±2.8 g/subject) was significantly higher than that of R1 (61.6±0.6g) and CR (62.39g) (p<0.05). The ADG of CR (9.24±3.26 g) was significantly higher than that of R1 (6.86±2.32g) and R2 (8.29±2.66 g) homogeneous (p>0.05). The consumption index (CI) and the food consumption for 01 Kg of live weight (FCkgLW) of R1 and R2 were significantly higher than those of CR (p<0.05). In conclusion, mango feed are an alternative to increased availability of feed for chickens. Experienced R1 and R2 rations can be recommended for the growth-finishing of local broilers. It will be necessary to assess the quality of carcasses and explore opportunities to reduce food production costs.