Human-chimpanzee-livestock interactions in Pencely-Soyah-Sabouyah National Park pose increasing risks of zoonotic disease transmission and ecological degradation. Chimpanzees (Pan troglodytes verus), listed as endangered, are particularly vulnerable, as are local human communities that share their habitats. This study examines major zoonotic diseases (anthrax, yellow fever, tuberculosis, malaria, enteric diseases, and monkey measles) in the context of competition for vital resources and increasing human development. Combining ethnobiology, statistical analyses, and qualitative and quantitative social research methods, the results show that the main foci of zoonotic transmission are located near water points, markets, butcheries, and ecological corridors frequented by chimpanzees. The study identifies several levels of threats: very low (presence of panthers: 11.38%), low (damage to crops and livestock: 13.05%), moderate (injuries and deaths related to human-chimpanzee interactions), high (decline of traditional conservation practices: 16.38%), and very high (transmission of zoonotic diseases: 20.55%). The most critical threat remains anthropization, which leads to a scarcity of essential resources (24.72%). The transmission of emerging diseases and the deterioration of ecosystems represent major risks to public health and biodiversity. A proactive approach involving an epidemiologist is essential to monitor transmission modes, implement epidemiological intelligence strategies, and reduce the risk of contamination in this key region.

The present study aims to determine the best organo-mineral fertilization formula for increased production of seed corn at the Faranah/ ISAV. A Randomized Complete Block experimental design comprising variants (D0; D4+50; D6+75; D8+100; D0+150 and D12+0) each repeated three times was carried out. During the vegetative phases the findings revealed that the highest Daily Growth Rates obtained on the 35th Day After Sowing (DAS) with D0 (2.30 cm/day); on the 45th and 55th DAS with D0+150 (2.00 and 4.97cm/day) respectively. At maturity, the tallest plants were obtained with the doses D12+0 (233.00 cm) and D8+100 (232.67 cm) and the shortest plants with D4+50 (192.83 cm). Respective gains of 480kg/ha; 1050kg/ha, 1340kg/ha; 1360 kg/ha and 1880 kg/ha of seed corn yield were obtained with the increase in doses and types of fertilizers used compared to the control. The highest corn seed yields were obtained with the D12+0 and D0+150 inputs, either 4870 and 4350 kg/ha respectively compared to the unfertilized control which obtained 2990 kg/ha. As part of the sustainable improvement in seed corn productivity at ISAV in Faranah, organic manure fertilizer such as cow dung at a dose of 12 000 kg / ha (D12+0) and Triple 17 mineral fertilizer at a dose of 150 kg/ha (D0+150) would be a practice to be popularized.