PMID- 24867934 OWN - NLM STAT- MEDLINE DCOM- 20151106 LR - 20231213 IS - 1525-3163 (Electronic) IS - 0021-8812 (Linking) VI - 92 IP - 6 DP - 2014 Jun TI - Standardized total tract digestibility of phosphorus in copra meal, palm kernel expellers, palm kernel meal, and soybean meal fed to growing pigs. PG - 2473-80 LID - 10.2527/jas.2013-6654 [doi] AB - Sixty-six barrows (initial BW: 27.4 +/- 2.8 kg) were used to determine the standardized total tract digestibility (STTD) of P in copra meal (CM), palm kernel expellers from Indonesia (PKE-IN), palm kernel expellers from Costa Rica (PKE-CR), palm kernel meal from Costa Rica (PKM), and soybean meal (SBM) without or with exogenous phytase. Pigs were housed individually in metabolism cages and allotted to 11 diets with 6 replicate pigs per diet in a generalized randomized block design. Five diets were formulated by mixing cornstarch and sugar with CM, PKE-IN, PKE-CR, PKM, or SBM. Five additional diets, which were identical to the initial 5 diets but supplemented with 800 units of phytase, were also formulated. A P-free diet was used to measure basal endogenous losses of P by the pigs. Feces were collected for 5 d using the marker to marker approach after a 5-d adaptation period. Analyzed total P in CM, PKE-IN, PKE-CR, PKM, and SBM was 0.52, 0.51, 0.53, 0.54, and 0.67%, respectively. Phytate P was 0.22, 0.35, 0.38, 0.32, and 0.44% in CM, PKE-IN, PKE-CR, PKM, and SBM, respectively. Addition of phytase increased (P < 0.05) the apparent total tract digestibility (ATTD) of P from 60.6 to 80.8, 27.3 to 56.5, 32.6 to 59.9, 48.9 to 64.1, and 41.1 to 72.2% in CM, PKE-IN, PKE-CR, PKM, and SBM, respectively. The ATTD of P in CM was greater (P < 0.05) than in any of the other ingredients. The ATTD of P in SBM and PKM was greater (P < 0.05) than in PKE-IN, with PKE-CR being intermediate. The STTD of P increased (P < 0.05) from 70.6 to 90.3, 37.6 to 66.4, 43.2 to 69.9, 57.9 to 73.5, and 49.6 to 81.1% in CM, PKE-IN, PKE-CR, PKM, and SBM, respectively, when microbial phytase was added to the diets. When expressed as a percentage of total P, phytate P concentration in the ingredient negatively affected (P < 0.05) the ATTD of P (107.09 - 1.0564 x % phytate P; R(2) = 87.1) and the STTD of P (116.3 - 1.0487 x % phytate P; R(2) = 89.4). In conclusion, microbial phytase increased P digestibility of CM, PKM, PKE-CR, PKE-IN, and SBM when fed to growing pigs, and the concentration of phytate P affects the response to microbial phytase. FAU - Almaguer, B L AU - Almaguer BL AD - Department of Animal Sciences, University of Illinois, Urbana 61801. FAU - Sulabo, R C AU - Sulabo RC AD - Department of Animal Sciences, University of Illinois, Urbana 61801. FAU - Liu, Y AU - Liu Y AD - Department of Animal Sciences, University of Illinois, Urbana 61801. FAU - Stein, H H AU - Stein HH AD - Department of Animal Sciences, University of Illinois, Urbana 61801 hstein@illinois.edu. LA - eng PT - Journal Article PL - United States TA - J Anim Sci JT - Journal of animal science JID - 8003002 RN - 0 (Phosphorus, Dietary) RN - 27YLU75U4W (Phosphorus) RN - 7IGF0S7R8I (Phytic Acid) RN - EC 3.1.3.26 (6-Phytase) SB - IM MH - 6-Phytase/metabolism MH - Animal Feed/*analysis MH - Animal Nutritional Physiological Phenomena MH - Animals MH - Arecaceae/*chemistry MH - Diet/veterinary MH - Dietary Supplements MH - Digestion/*physiology MH - Feces MH - Male MH - Phosphorus/chemistry/*metabolism MH - Phosphorus, Dietary/analysis/metabolism MH - Phytic Acid MH - Glycine max/*chemistry MH - Swine/growth & development/*physiology OTO - NOTNLM OT - copra meal OT - palm kernel expellers OT - palm kernel meal OT - phosphorus OT - phytase OT - pigs EDAT- 2014/05/29 06:00 MHDA- 2015/11/07 06:00 CRDT- 2014/05/29 06:00 PHST- 2014/05/29 06:00 [entrez] PHST- 2014/05/29 06:00 [pubmed] PHST- 2015/11/07 06:00 [medline] AID - 92/6/2473 [pii] AID - 10.2527/jas.2013-6654 [doi] PST - ppublish SO - J Anim Sci. 2014 Jun;92(6):2473-80. doi: 10.2527/jas.2013-6654.