Phosphorus

Requirement for digestible calcium by 25 to 50 kg pigs at different dietary concentrations of phosphorus as indicated by growth performance, bone ash concentration, and calcium and phosphorus balances

González-Vega, J. C., C. L. Walk, M. R. Murphy, and H. H. Stein. 2016. Requirement for digestible calcium by 25 to 50 kg pigs at different dietary concentrations of phosphorus as indicated by growth performance, bone ash concentration, and calcium and phosphorus balances. J. Anim. Sci. 94:5272-5285. Link to abstract

Effect of diets formulated based on standardized total tract digestible phosphorus fed to growing pigs

Abelilla, J. J., R. C. Sulabo, H. H. Stein, S. P. Acda, A. A. Angeles, M. C. R. Oliveros, and F. E. Merca. 2015. Effect of diets formulated based on standardized total tract digestible phosphorus fed to growing pigs. J. Anim. Sci. 93(Suppl. 2):52-53 (Abstr.) Link to abstract (.pdf)

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Nutritional value of soybean products

Sotak, K. M. and H. H. Stein. 2014. Nutritional value of soybean products. Pages 19-25 in Proc. Midwest Swine Nutr. Conf. Indianapolis, IN, Sep. 4, 2014. Link to full text (.pdf)

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Digestibility of phosphorus by growing pigs of fermented and conventional soybean meal without and with microbial phytase

Rojas, O. J. and H. H. Stein. 2012. Digestibility of phosphorus by growing pigs of fermented and conventional soybean meal without and with microbial phytase. J. Anim. Sci. 90:1506-1512. Link to full text (.pdf)

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Evaluation of the nutritional value of sources of canola meal fed to pigs

Canola meal is produced from the rapeseed plant, a relative of broccoli and mustard. Natural rapeseed contains glucosinolates, which make feed unpalatable, and erucic acid, which is toxic to animals. These anti-nutritional factors are heat-stable, and therefore, cannot be removed by heat-treating rapeseed. Rapeseed, which is low in both glucosinolates and erucic acid, has been produced by hybridization, and is called canola in Canada and the United States and 00-rapeseed in Europe. Oil can be removed from canola and rapeseeds via solvent extraction or mechanically expelling. The solvent extraction process results in production of canola meal or 00-rapeseed meal and mechanical expelling of oil results in production of canola expellers or 00-rapeseed expellers.

The objective of this study was to compare the chemical compositions of canola meal from North America and 00-rapeseed meal from Europe and to compare the composition of 00-rapeseed meal and 00-rapeseed expellers.  Ten samples of canola meal were collected from crushing plants in North America, and eleven samples of 00-rapeseed meal and five samples of 00-rapeseed expellers were collected from crushing plants in Europe. The samples were analyzed for energy, fat, sugar, starch, fiber, crude protein, amino acids, and minerals.

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Effects of phytase on standardized total tract digestibility of P in copra expellers, palm kernel expellers, and palm kernel meal fed to growing pigs

Almaguer, B. L., R. C. Sulabo, and H. H. Stein. 2011. Effects of phytase on standardized total tract digestibility of P in copra expellers, palm kernel expellers, and palm kernel meal fed to growing pigs. J. Anim. Sci. 89(E-Suppl. 1):187 (Abstr.) Link to abstract (.pdf)

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Standardized total tract digestibility of P in dried fermentation biomass, Peptone 50, and P.E.P. 2 Plus fed to weanling pigs

Mathai, J. K., R. C. Sulabo, J. L. Usry, B. W. Ratliff, D. M. McKilligan, and H. H. Stein. 2011. Standardized total tract digestibility of P in dried fermentation biomass, Peptone 50, and P.E.P. 2 Plus fed to weanling pigs. J. Anim. Sci. 89(E-Suppl. 1):85 (Abstr.) Link to abstract (.pdf)

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Effects of graded levels of microbial phytase on the standardized total tract digestibility of phosphorus in corn and corn co-products

Corn contains approximately 0.26% phosphorus, but most of this phosphorus is bound to phytic acid, or phytate, and thus is not bioavailable to pigs because they lack the enzyme phytase. Corn-based diets can be supplemented with inorganic phosphorus to help meet pigs' phosphorus needs; however, rising costs of inorganic phosphorus makes this approach increasingly uneconomical. Helping pigs digest more of the phosphorus that naturally occurs in the diet could provide a cost-effective alternative to inorganic phosphorus supplementation while also helping to reduce the environmental burden of excreted phosphorus. An experiment was conducted to determine how adding graded levels of microbial phytase affected the standardized total tract digestibility (STTD) of phosphorus in corn and corn co-products. From these data, regression equations were developed to predict the response to adding different levels of phytase to each ingredient.

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Concentration of dietary calcium supplied by calcium carbonate does not affect the apparent total tract digestibility of calcium, but decreases digestibility of phosphorus by growing pigs

Stein, H. H., O. Adeola, G. L. Cromwell, S. W. Kim, D. C. Mahan, and P. S. Miller. 2011. Concentration of dietary calcium supplied by calcium carbonate does not affect the apparent total tract digestibility of calcium, but decreases digestibility of phosphorus by growing pigs. J. Anim. Sci. 89:2139-2144. Link to full text (.pdf)

Phosphorus digestibility and energy concentration of enzyme-treated and conventional soybean meal fed to weanling pigs

Goebel, K. P., and H. H. Stein. 2011. Phosphorus digestibility and energy concentration of enzyme-treated and conventional soybean meal fed to weanling pigs. J. Anim. Sci. 89:764–772. Link to full text (.pdf)

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Relative bioavailability of phosphorus in inorganic phosphorus sources fed to growing pigs

Petersen, G. I., C. Pedersen, M. D. Lindemann and H. H. Stein. 2011. Relative bioavailability of phosphorus in inorganic phosphorus sources fed to growing pigs. J. Anim. Sci. 89:460-466. Link to full text (.pdf)

Effects of formulating diets for weanling pigs on a standardized total tract digestibility (STTD) of P basis

Almeida, F. N. and H. H. Stein. 2010. Effects of formulating diets for weanling pigs on a standardized total tract digestibility (STTD) of P basis. J. Anim. Sci. 88(E-Suppl. 3):68 (Abstr.) Link to abstract (.pdf)

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Effects of graded levels of phytase on the apparent and standardized total tract digestibility of phosphorus in corn and corn co-products

Almeida, F. N. and H. H. Stein. 2010. Effects of graded levels of phytase on the apparent and standardized total tract digestibility of phosphorus in corn and corn co-products. J. Anim. Sci. 88(E-Suppl. 2):378 (Abstr.) Link to abstract (.pdf)

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Performance and phosphorus balance of pigs fed diets formulated on the basis of values for standardized total tract digestibility of phosphorus

Almeida, F. N. and H. H. Stein. 2010. Performance and phosphorus balance of pigs fed diets formulated on the basis of values for standardized total tract digestibility of phosphorus. J. Anim Sci. 88:2968-2977. Link to full text (.pdf)

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Finding phosphorus solutions for weaned-pig diets

Almeida, F. N. and H. H. Stein. 2010. Finding phosphorus solutions for weaned-pig diets. Pages 24-25 in Pork Magazine, August 2010. Link to full text (.pdf)

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Energy and nutrient digestibility in four sources of distillers dried grains with solubles produced from corn grown within a narrow geographical area and fed to growing pigs

Stein, H. H., S. P. Connot, and C. Pedersen. 2009. Energy and nutrient digestibility in four sources of distillers dried grains with solubles produced from corn grown within a narrow geographical area and fed to growing pigs. Asian-Austr. J. Anim. Sci. 22:1016-1025. Link to full text (.pdf)

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Effects of dietary concentration of P and microbial phytase on the digestibility of amino acids and energy by growing pigs

Pahm, A. A., G. I. Petersen, N. R. Augspurger, and H. H. Stein. 2009. Effects of dietary concentration of P and microbial phytase on the digestibility of amino acids and energy by growing pigs. J. Anim. Sci. 87 (E-Suppl. 3):92 (Abstr.) Link to abstract (.pdf)

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Effects of phytase supplementation on apparent and standardized total tract digestibility of P in corn, soybean meal, and distillers dried grains with solubles (DDGS) fed to growing pigs

Almeida, F. N. and H. H. Stein. 2009. Effects of phytase supplementation on apparent and standardized total tract digestibility of P in corn, soybean meal, and distillers dried grains with solubles (DDGS) fed to growing pigs. J. Anim. Sci. 87 (E-Suppl. 2):509 (Abstr.) Link to abstract (.pdf)

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Effects of a Pichia-expressed phytase on performance and P excretion of growing pigs

McGinnis, L. M., M. R. Widmer, C. L. Wright, T. M. Parr, and H. H. Stein. 2007. Effects of a Pichia-expressed phytase on performance and P excretion of growing pigs. J. Anim. Sci. 85(Suppl. 1):438 (Abstr.) Link to abstract (.pdf)

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