phosphorus, calcium, manganese and zinc. Phytase supplementation caused a decrease in phosphorus excretion by 8% in the group …. Phytase supplementation increased the retention of phosphorus by 31% in laying hens receiving 500 FTU and 57% in the group …

estimate the change in the virtual phosphorus requirements in each country over time with regard to food consumption. While the … changes in the food supply of these three economies are discussed in terms of the phosphorus demand for producing food for … these three countries using the concept of the virtual phosphorus. Future projections were made to create a likely case …

paper overviews the recent literature and data on the availability of phosphorus and discusses the eco-nomic aspects of …