Source and Level of Phosphorus for Growing-Finishing Swine

Publisher Website
Google Scholar
Abstract
Four trials were conducted to evaluate source and level of phosphorus (P) for growing-finishing pigs fed barley-soybean meal diets. Monosodium phosphate (MSP) and sodium tripoly phosphate were more efficient sources of P for growing pigs from 16 to 46 kg than defluorinated rock phosphate (DRP) and dicalcium phosphate in one trial but no differences were noted in two other trials between MSP and DRP in the parameters measured. There were no large differences in gains due to source of supplemental P in any trial for finishing pigs from 46 to 101 kilograms. Growing pigs (16 to 46 kg) fed .6 and .8% P gained faster (P<.01) than pigs fed .4% phosphorus. Pigs fed .8% P gained faster (P<.05) than those fed .4% P during the finishing period (46 to 101 kg). National Research Council recommended levels of P were sufficient in growing-finishing diets fed to pigs raised in an environment controlled building on concrete slatted floors as measured by rate of gain. Diets supplemented with inorganic P produced faster (P<.01) gains than diets with only plant phosphorus. The greatest reduction in gains due to the absence of inorganic P occurred during the growing phase. Pigs fed supplemental P tended to be more efficient in feed conversion. Copyright © 1976. American Society of Animal Science. Copyright 1976 by American Society of Animal Science.

This publication has 0 references indexed in Scilit: