This study investigates the effects of Zobo (Hibiscus sabdariffa) and turmeric (Curcuma longa) extracts on the organoleptic and microbial quality of laboratory-prepared yoghurt. With growing interest in natural additives due to their potential health benefits, the use of Zobo and turmeric extracts was explored as natural preservatives and flavor enhancers. Fresh yoghurt samples were prepared and divided into three batches: one with Zobo extract, another with turmeric extract, and a control without any additives. Sensory evaluation was conducted to assess organoleptic properties such as taste, color, texture, and overall acceptability, while microbial analysis was performed to evaluate the yogurt’s safety and shelf life over a 7-day storage period. The results indicated that both Zobo and turmeric extracts significantly improved the color and flavor profiles, with Zobo enhancing a pleasant red hue and tart flavor, while turmeric imparted a subtle earthy taste. Microbial analysis revealed a reduction in bacterial growth, particularly in the turmeric-enhanced yoghurt, demonstrating its antimicrobial properties. Overall, the study highlights the potential of Zobo and turmeric extracts as natural preservatives that not only enhance the sensory qualities of yoghurt but also improve its microbial safety, making them promising additives for the dairy industry.

The present study focused on a comparison of productivity between Desmodium kenyasis and Stylosanthes gracilis under the ecological conditions of Nioka, Democratic Republic of Congo. The experimental methodology adopted involved the cultivation of these two species on arable soil plots, both amended and unamended, evaluating parameters such as germination, crown diameter, plant height and biomass per plot. This research is of scientific, socio-economic and environmental importance. The introduction of permanent legumes, in combination with grasses, could improve pasture management. The results, summarized in tables, revealed differentiated performances: the amended Desmodium kenyasis produced 1.952 t/ha, while the unamended Desmodium produced 1.385 t/ha. Similarly, the amended Stylosanthes gracilis produced 1.278 t/ha, compared to 1.075 t/ha for the unamended Stylosanthes gracilis. Soil amendment promoted better productivity for both species studied.

Improvement of poultry farming by providing nutritional quality based on local ingredients. We closely examined the zootechnical performance induced by this inclusion, as well as the ration losses resulting from different feed formulations. The 12-day-old chicks placed in pens were gradually accustomed to local food and then divided into groups according to diets. The growth of the chicks was monitored by weekly measurements carried out on a sample of 15 chickens randomly selected from a batch of 20 chicks per test. 63 days later, an average weight gain of 2591g was noticed. The initial hypotheses are confirmed. It should be noted that feeds with 15% grasshopper meal gave the best zootechnical performance, with a higher live weight than other formulations. The exception was ration losses in tests where grasshopper meal was present at a lower rate (5%) or absent. These results prove the effectiveness of integrating grasshopper meal into the Broiler diet, both in terms of performance and reduction of ration losses, thus paving the way for new feeding practices in local livestock farming.