@article{Elizondo-Salazar_2005, title={Phosphorus in dairy farm systems.}, volume={16}, url={https://revistas.ucr.ac.cr/index.php/agromeso/article/view/11877}, DOI={10.15517/am.v16i2.11877}, abstractNote={<p>Due to the intense</p><p>use of P fertilizers and livestock manure in modern day</p><p>agriculture, P has become an accelerator of fresh water</p><p>eutrophication, resulting in reduced oxygen availability</p><p>because of growth of algae and their decomposition. Recent</p><p>research indicates that dietary P management is a key strategy</p><p>to reduce P imports and accumulation on dairy farms. Thus,</p><p>a more precise formulation of dairy rations can lead to</p><p>substantial reduction in fecal P excretion without impairing</p><p>animal productivity. Some mathematical equations are</p><p>presented in order to estimate P excretion by dairy cows.</p><p>These equations would be very useful when developing</p><p>nutrient management programs. The objective of the study</p><p>was to make a brief commentary of the importance of P in the</p><p>body, understand that excess P can be an important threat to</p><p>surface waters, and to find the easiest and most economic</p><p>ways to reduce P excretion in dairy farm systems.</p>}, number={2}, journal={Agronomía Mesoamericana}, author={Elizondo-Salazar, Jorge Alberto}, year={2005}, month={Sep.}, pages={231–238} }