Soaking increases the efficacy of supplemental microbial phytase in a low-phosphorus corn-soybean meal diet for growing pigs

Journal of Animal Science
J LiuT L Veum

Abstract

Sixty-three crossbred barrows averaging 18.7 kg initial BW were used in a 6-wk study of the effects of soaking on the efficacy of supplemental microbial phytase (Natuphos, BASF) in a low-P corn-soybean meal diet. The basal corn-soybean meal diet contained .06% available P, .32% total P, and .55% Ca with no added inorganic P. The basal diet was supplemented with 0, 250, or 500 phytase units (PU)/kg of diet. The diet was fed dry or soaked (2 parts water:1 part diet and mixed for 2 h at 30 degrees C before feeding) in a 3 x 2 factorial arrangement. A positive control diet was supplemented with inorganic P and provided .23% available P, .48% total P, and .60% Ca. Pigs were individually penned and fed their respective diets to appetite in four equal meals daily. There were no soaking x phytase interactions (P > .1 to .6) for growth performance criteria. Daily gain and gain/feed ratio were increased (P < .01) by soaking and increased linearly (P < .01) by phytase. Daily feed intake was increased linearly (P < .01) by phytase. There were soaking x phytase quadratic interactions (P < .01) for apparent P absorption criteria because soaking the 250 PU/kg diet increased P absorption similar to that obtained with the 500 PU/kg diet fed dry...Continue Reading

Citations

Jun 21, 2007·Critical Reviews in Biotechnology·Parvinder KaurT Satyanarayana
Mar 19, 2014·Animal : an International Journal of Animal Bioscience·M A Ton NuH D Poulsen
Nov 19, 2014·Journal of Animal Physiology and Animal Nutrition·E HumerK Schedle
Oct 9, 2004·Journal of Animal Science·K F KnowltonD A Emmerson
Oct 4, 2012·Animal : an International Journal of Animal Bioscience·M P Létourneau-MontminyA Narcy
Dec 19, 2020·Journal of the Science of Food and Agriculture·Vera Sommerfeld, Regiane R Santos
Jun 3, 2021·Animals : an Open Access Journal From MDPI·Huailu XinDaiwen Chen

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