ABSTRACT: Sustainable and stable production of fish larvae requires diet that will enhance efficient nutrient utilization and growth performance.
A study was conducted on growth and yield of cowpea (Vigna unguiculalta L) under different mulch materials on an Alfisol in the Teaching and Research farm of Ambrose Alli University, in Ekpoma, Nigeria. Mulch materials increased the soil pH, organic carbon, total nitrogen, available phosphorus and carbon exchange capacity of the soil over control. At 3 and 6 weeks after planting, cocoa husk and empty fruit bunch recorded significant higher plant height, leaf area and number of leavers of cowpea plant over cassava peels and control.
120 fingerlings of Clarias gariepinus were fed five different experimental 35% isoproteic diets, a control (0% water hyacinth) and four diets containing different levels of water hyacinth (10%, 20%, 30% and 40%) in place of fish meal as protein source at %% of the body weight for 70 days under laboratory condition. The study revealed a decrease in the growth performance indices as the level of water hyacinth increases.
