AIM This study was conducted to investigate the effect of selenomethionine and omega-3 fatty acid on serum mineral profile and nutrient utilization of broiler chicken. MATERIALS AND METHODS The present study was a 2×3 factorial arrangement of two levels of selenomethionine (0 and 0.3 ppm) and three levels of omega-3 fatty acid (0, 0.5 and 1%). Day-old Vencobb broiler chicks (n=180), were rand...

Abstract The rapid acceleration of anthropogenic phosphorus (P) loadings to watersheds has fuelled massive freshwater and coastal eutrophication completely changed the global P cycle. Within watersheds, emitted is transported downstream towards estuaries. Reservoirs can retain a significant proportion this P. In long term, accumulated however be re-mobilized, process lacking in current budgets....

Phosphorus retention in sediments has been estimated for three basins in Lake Simcoe, a mesotrophic lake in Ontario, Canada. Total phosphorous (TP) fractionation was used to examine the concentration of phosphorus (P) binding forms in the sediments of Cook's Bay, Kempenfelt Bay, and the Main Basin. The extended sequential extractions allowed us to differentiate between organic-, inorganic-, car...

We used mass load budgets, transient storage modeling, and nutrient spiraling metrics to characterize nitrate (NO), ammonium (NH), and inorganic phosphorus (SRP) demand in seven agricultural streams across the United States and to identify in-stream services that may control these conditions. Retention of one or all nutrients was observed in all but one stream, but demand for all nutrients was ...

Phosphorus (P) fixation in the soil reduces utilization of this element by plants and can be one main problems for fertilization management soils containing Fe oxides. As a strategy to minimize effects P retention, organic materials, such as biochar or commercial composts, may useful tools maintain availability delay immobilization soil, thereby benefiting, example, rehabilitation areas impacte...