Lee

Full-fat soybeans: Valuable source of energy, digestible P for pigs

Ruiz-Arias, N. C., S. A Lee, and H. H. Stein. 2024. Full-fat soybeans: Valuable source of energy, digestible P for pigs. National Hog Farmer. On-line edition. Oct. 31, 2024. Link to full text.

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Determination of energy values in pistachio shell powder and soybean hulls fed to gestating and lactating sows

Kim, Yeonwoo, Su A. Lee, and Hans H. Stein. 2024. Determination of energy values in pistachio shell powder and soybean hulls fed to gestating and lactating sows. Translational Animal Science, 2024, 8, txae135. doi.org/10.1093/tas/txae135 Link to full text.

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Standardized total tract digestibility of phosphorus in canola meal fed to gestating or lactating sows without or with a multi-enzyme complex

Velayudhan, Deepak E., Manik M. Hossain, Jinyoung Lee, Hans H. Stein, Charles Martin Nyachoti. 2024. Standardized total tract digestibility of phosphorus in canola meal fed to gestating or lactating sows without or with a multi-enzyme complex. Animal Feed Science and Technology 316 (2024) 116068. doi.org/10.1016/j.anifeedsci.2024.116068.

Feed preference of weanling pigs fed diets containing extruded corn ground to different particle sizes

Marshall, C. M., S. A Lee, and H. H Stein. 2024. Feed preference of weanling pigs fed diets containing extruded corn ground to different particle sizes. J. Anim. Sci.102 (Suppl. 3): 234–235. doi.org/10.1093/jas/skae234.272 Link to abstract.

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Interactive effects of extrusion and particle size reduction of corn on metabolizable energy by weanling pigs

Marshall, Caleb M, Su A Lee, and Hans H. Stein. 2024. Interactive effects of extrusion and particle size reduction of corn on metabolizable energy by weanling pigs. J. Anim. Sci., Volume 102 (Suppl. 3): 261–262 (abstr.). doi.org/10.1093/jas/skae234.299 Link to abstract.

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25-hydroxy-vitamin D3 and microbial phytase may increase digestibility of calcium and phosphorus in diets fed to growing pigs

Vitamin D regulates a wide spectrum of genes responsible for Ca and P homeostasis and cell differentiation. Cholecalciferol, commonly known as vitamin D3, is a primary source of vitamin D3 in diets for growing pigs; however, it needs to be hydroxylated twice to be active. The first hydroxylation occurs in the liver at the 25-position, resulting in 25-hydroxycholecalciferol [25(OH)D3], whereas the second hydroxylation occurs in the kidneys at the 1-position, resulting in 1,25 dihydroxycholecalciferol [1,25(OH)2D3], which is the active form of vitamin D3 in the body. Supplementation of 25(OH)D3 to diets for sows in late gestation may increase the apparent total tract digestibility (ATTD) and retention of Ca and P, but there are no data to demonstrate this effect in growing pigs.

Cereal grains commonly used in diets for pigs have low digestibility of P because P is bound to phytate. Exogenous phytase increases the digestibility of both Ca and P in pigs by releasing the P from the phytate molecule within the gastrointestinal tract of pigs. However, there is limited information about the interaction between 25(OH)D3 and supplemental phytase in diets fed to growing pigs. Therefore, the objective of this experiment was to test the hypothesis that both 25(OH)D3 and microbial phytase independently and in combination may increase standardized total tract digestibility (STTD) of Ca and P by growing pigs.

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Dietary supplementation of valine, isoleucine, and tryptophan may overcome the negative effects of excess leucine in diets for weanling pigs containing corn fermented protein

Mallea, Andrea P., Charmaine D. Espinosa, Su A Lee, Minoy A. Cristobal, Leidy J. Torrez‑Mendoza, Hans H. Stein. 2024. Dietary supplementation of valine, isoleucine, and tryptophan may overcome the negative effects of excess leucine in diets  for weanling pigs containing corn fermented protein.    J. Anim. Sci.

Empirical validation of implementing high energy in soybean meal: soybean oil equivalence of soybean meal in diets fed to growing pigs

Ibagon, J. A., S. A. Lee, and H. H. Stein. 2024. Empirical validation of implementing high energy in soybean meal: soybean oil equivalence of soybean meal in diets fed to growing pigs. In: 75th Annual Meeting of the EAAP, Florence, Italy, Sep. 1-5, 2024.

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Effects of high fiber on gas production and net energy in diets fed to group-housed pigs

Lee, S. A., D. A. Rodriguez, and H. H. Stein. 2024. Effects of high fiber on gas production and net energy in diets fed to group-housed pigs. In: 75th Annual Meeting of the EAAP, Florence, Italy, Sep. 1-5, 2024.

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Digestible and metabolizable energy, and standardized total tract digestibility of phosphorus in five sources of full-fat soybeans fed to growing pigs

Whole soybeans, from which the oil is not extracted, are referred to as full-fat soybeans (FFSB) and may be used in diets for poultry and pigs because of it is high contents of protein, oil, linoleic acid, vitamin E, and lecithin. Unprocessed raw soybeans, however, contain several anti-nutritional factors including trypsin inhibitors that make them unsuitable as a feed for pigs and poultry, because the protein digesting enzymes are impaired by the trypsin inhibitors, which reduces digestibility, depresses growth rate, and decreases the efficiency of feed utilization when fed to swine. However, there is a lack of data for the nutritional value of FFSB. Therefore, two experiments were conducted to test the hypothesis that there is no difference among FFSB sources 01, 02, 03, 04, and 05 in the digestible energy (DE), the metabolizable energy (ME), and the standardized total tract digestibility (STTD) of P when fed to growing pigs.

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Diet protein concentration does not influence net energy

Cristobal, M., S. A Lee, and H. H. Stein. 2024. Diet protein concentration does not influence net energy. National Hog Farmer. On-line edition. Aug. 29, 2024. Link to full text.

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Effect of feeding intact protein from soybean meal instead of crystalline amino acids on energy and nitrogen balance by growing pigs

Cristobal, Minoy, Su A Lee, Leidy J. Torres-Mendoza, Andrea P. Mallea, Carl M. M. Parsons, Hans H. Stein. 2024. Effect of feeding intact protein from soybean meal instead of crystalline amino acids on energy and nitrogen balance by growing pigs. J. Anim. Sci Vol. 102, Suppl. S2. P 283 - 284. doi.org/10.1093/jas/skae102.322. Link to abstract.

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Effects of source of calcium carbonate and microbial phytase on standardized total tract digestibility of calcium by growing pigs

Nelson, Megan E., Su A Lee, Carrie Walk, Hans H. Stein. 2024. Effects of source of calcium carbonate and microbial phytase on standardized total tract digestibility of calcium by growing pigs. J. Anim. Sci Vol. 102, Suppl. S2. P 158 - 159. doi.org/10.1093/jas/skae102.175 Link to abstract.

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Reduction of particle size of field peas increases net energy and digestibility of starch when fed to growing pigs

Ibagon, Jimena A., Su A Lee, Hans H. Stein, Martin Nyachoti. 2024. Reduction of particle size of field peas increases net energy and digestibility of starch when fed to growing pigs. J. Anim. Sci Vol. 102, Suppl. S2. P 97 - 98. doi.org/10.1093/jas/skae102.109 Link to abstract.

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Standardized ileal digestibility of amino acids and concentration of metabolizable energy in three sources of corn protein fed to weanling pigs

Ruiz-Arias, Nelson C., Su A Lee, Hans H. Stein. 2024. Standardized ileal digestibility of amino acids and concentration of metabolizable energy in three sources of corn protein fed to weanling pigs. J. Anim. Sci Vol. 102, Suppl. S2. P 94 - 95. doi.org/10.1093/jas/skae102.106 Link to abstract.

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Effects of increasing dietary protein concentration on digestibility of amino acids by growing pigs

Lee, Su A, Hans H Stein. 2024. Effects of increasing dietary protein concentration on digestibility of amino acids by growing pigs. J. Anim. Sci Vol. 102, Suppl. S2. P 92 - 93. doi.org/10.1093/jas/skae102.104 Link to abstract.

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Concentrations of energy in pistachio shell powder fed to gestating sows and lactating sows

Kim, Yeonwoo, Su A Lee, Hans H. Stein. 2024. Concentrations of energy in pistachio shell powder fed to gestating sows and lactating sows. J. Anim. Sci Vol. 102, Suppl. S2. P 90 - 91. doi.org/10.1093/jas/skae102.102 Link to abstract.

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Effect of feeding intact protein from soybean meal instead of crystalline amino acids on growth performance, protein synthesis, and immune response of growing pigs

Cristobal, Minoy, Su A Lee, Andrea P. Mallea, Leidy J. Torres-Mendoza, Jessica P. Acosta, Carl M. M. Parsons, Hans H. Stein. 2024. Effect of feeding intact protein from soybean meal instead of crystalline amino acids on growth performance, protein synthesis, and immune response of growing pigs. J. Anim. Sci Vol. 102, Suppl. S2. P 45 - 46. doi.org/10.1093/jas/skae102.054 Link to abstract.

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