Rodriguez

Digestibility of energy and nutrients and concentration of metabolizable energy in soybean expellers and soybean meal fed to growing pigs

Rodriguez, D., Su A Lee, Hans H. Stein. 2020. Digestibility of energy and nutrients and concentration of metabolizable energy in soybean expellers and soybean meal fed to growing pigs. Journal of Animal Science, Volume 98, Issue Supplement_3, November 2020, Page 64. (Abstr.). Link to abstract.

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Extrusion of soybean hulls does not increase digestibility of amino acids or concentrations of digestible and metabolizable energy when fed to growing pigs

Rodriguez, Diego A., Su A Lee, María R. C. de Godoy, and Hans H. Stein. 2020. Extrusion of soybean hulls does not increase digestibility of amino acids or concentrations of digestible and metabolizable energy when fed to growing pigs. Transl. Anim. Sci. 2020.4:1-9. doi: 10.1093/tas/txaa169. Link to full text.

Nutrition Know-How: High-Shear Dry Soybean Expellers

Rodriguez, D. A., S. A Lee, and H. H. Stein. 2020. Nutrition Know-How: High-Shear Dry Soybean Expellers. Pork Magazine, On-line edition, Aug. 2020. Link to full text.

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Digestibility of amino acids, but not fiber, fat, or energy, is greater in cold-fermented, low-oil distillers dried grains with solubles (DDGS) compared with conventional DDGS fed to growing pigs

Rodriguez, Diego A., Su A Lee, and Hans H. Stein. 2020. Digestibility of amino acids, but not fiber, fat, or energy, is greater in cold-fermented, low-oil distillers dried grains with solubles (DDGS) compared with conventional DDGS fed to growing pigs. Journal of Animal Science, 2020, Vol. 98, No. 10, 1–8. doi:10.1093/jas/skaa297.

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Digestibility of amino acids and concentrations of metabolizable energy and net energy are greater in high-shear dry soybean expellers than in soybean meal when fed to growing pigs

Rodriguez, Diego A., Su A Lee, and Hans H. Stein. 2020. Digestibility of amino acids and concentrations of metabolizable energy and net energy are greater in high-shear dry soybean expellers than in soybean meal when fed to growing pigs. Journal of Animal Science, 2020, Vol. 98, No. 7, 1–8.

doi:10.1093/jas/skaa215. Link to full text.

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Digestibility of amino acids, fiber, and energy by growing pigs, and concentrations of digestible and metabolizable energy in yellow dent corn, hard red winter wheat, and sorghum may be influenced by extrusion

Rodriguez, Diego A., Su A. Lee, Cassandra K. Jones, John K. Htoo, Hans H. Stein. 2020. Digestibility of amino acids, fiber, and energy by growing pigs, and concentrations of digestible and metabolizable energy in yellow dent corn, hard red winter wheat, and sorghum may be influenced by extrusion. Animal Feed Science and Technology 268 (2020) 114602. https://doi.org/10.1016/j.anifeedsci.2020.114602.

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Digestibility of energy, and total dietary fiber, and concentration of digestible and metabolizable energy in soybean expeller and soybean meal fed to growing pigs

When soybeans are crushed, the oil may be solvent extracted and the resulting defatted soybeans are known as soybean meal (SBM). However, the oil may also be mechanically expelled from the beans and the defatted soybeans resulting from this procedure is an ingredient known as soybean expellers. The expelling procedure is less efficient in removing oil from the beans and soybean expellers, therefore, contain more residual oil than SBM. Soybean expellers can be produced using different technologies, and a new procedure involving a patented high shear dry extrusion procedure was recently developed (Insta-Pro International, Des Moines, IA). There are however, no data for the apparent total tract digestibility (ATTD) of GE and total dietary fiber (TDF) and DE and ME concentrations in the soybean expellers that are produced from this procedure. Therefore, the objective of this research was to test the hypothesis that the ATTD of GE and TDF and concentrations of DE and ME are greater in soybean expellers than in SBM when fed to growing pigs.

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Digestibility of amino acids is greater in soybean expellers than in soybean meal when fed to growing pigs

When soybeans are crushed, the oil may be solvent extracted and the resulting defatted soybeans are known as soybean meal (SBM). However, the oil may also be mechanically expelled from the beans and the defatted soybeans resulting from this procedure is an ingredient known as soybean expellers. The expelling procedure is less efficient in removing oil from the beans and soybean expellers, therefore, contain more residual oil than SBM. Soybean expellers can be produced using different technologies, and a new procedure involving a patented high shear dry extrusion procedure was recently developed (Insta-Pro International, Des Moines, IA). There are however, no data for the digestibility of amino acids (AA) in the soybean expellers that are produced from this procedure. Therefore, the objective of this research was to test the hypothesis that the standardized ileal digestibility (SID) of crude protein (CP) and AAis greater in soybean expellers than in SBM when fed to growing pigs.

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Effects of extrusion on nutrient and energy digestibility in cereal grains fed to growing pigs

Rodriguez, D. A., S. A. Lee, and H. H. Stein. 2019. Effects of extrusion on nutrient and energy digestibility in cereal grains fed to growing pigs. Book of Abstracts. In: 1st International Feed Technology Congress, Cologne, Germany. p. 16. (Abstr.). Link to Abstract.

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Effects of extrusion on nutrient and energy digestibility in cereal grains fed to growing pigs

Rodriguez, D. A., S. A. Lee, C. Jones, J. K. Htoo, and H. H. Stein. 2019. Effects of extrusion on nutrient and energy digestibility in cereal grains fed to growing pigs. In: 6th EAAP International Symposium on Energy and Protein Metabolism and Nutrition, Belo Horizonte, Minas Gerais, Brazil, Sep. 9-12, 2019. Pages 185-186. (Abstr.). Link to full text

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Digestibility of amino acids, fiber, and energy, and concentrations of digestible and metabolizable energy in conventional and extruded yellow dent corn, wheat, and sorghum fed to growing pigs

Rodriguez Diego A., Su A Lee, Mary B. Muckey, Cassandra K. Jones, and Hans H. Stein. 2019. Digestibility of amino acids, fiber, and energy, and concentrations of digestible and metabolizable energy in conventional and extruded yellow dent corn, wheat, and sorghum fed to growing pigs. Journal of Animal Science, Volume 97, Issue Supplement_2, July 2019, Pages 85–86. (Abstr.). Link to abstract.

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Extruded grains increase concentration, utilization of energy

Rodriguez, D. A., and H. H. Stein. 2018. Extruded grains increase concentration, utilization of energy. National Hog Farmer, On Line edition. Nov. 29, 2018. Link to full text.

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Nutritional value for growing pigs of different sources of distillers dried grains with solubles (DDGS)

Blavi, L., D. A. Rodriguez, and H. H. Stein. 2018. Nutritional value for growing pigs of different sources of distillers dried grains with solubles (DDGS). Pig 333. Sep. 10, 2018. Link to full text.

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Comparing pelleted diets containing Dakota Gold and conventional DDGS

Rodriguez, D. A., and H. H. Stein. 2018. Comparing pelleted diets containing Dakota Gold and conventional DDGS. National Hog Farmer, Online edition, Marzo 29, 2018. Link to full text.

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Digestibility of amino acids, fiber, energy, and concentrations of digestible and metabolizable energy in conventional and extruded yellow dent corn, wheat, and sorghum fed to growing pigs

Extrusion of cereal grains may be used to improve nutrient digestibility in cereal grains because addition of heat and pressure in combination with addition of moisture during the extrusion may gelatinize the starch, which results in an increase in starch digestibility. It is also possible that AA and energy digestibility are increased by the extrusion, but data to verify this hypothesis have not been published. Therefore, the objective of these experiments was to test the hypothesis that the ileal digestibility of AA and starch and the apparent total tract digestibility (ATTD) of ADF, NDF, and GE as well as the concentrations of DE and ME in corn, wheat, and sorghum are increased by extrusion.

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Chemical composition and digestibility of energy, dry matter, amino acids, and fiber in wheat middlings and red dog fed to growing pigs

Casas, G. A., D. A. Rodriguez, and H. H. Stein. 2018. Chemical composition and digestibility of energy, dry matter, amino acids, and fiber in wheat middlings and red dog fed to growing pigs. J. Anim. Sci. 96(Suppl. 2):175-176 (Abstr.) Link to abstract (.pdf)

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Digestibility of amino acids, fiber, and fat and concentrations of digestible and metabolizable energy in two sources of distillers dried grains with solubles fed to growing pigs

Rodriguez, D. A., S. A. Lee, and H. H. Stein. 2018. Digestibility of amino acids, fiber, and fat and concentrations of digestible and metabolizable energy in two sources of distillers dried grains with solubles fed to growing pigs. J. Anim. Sci. 96(Suppl. 2):173-174 (Abstr.) Link to abstract (.pdf)

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Effects of Dakota Gold and conventional distillers dried grains with solubles on wean to finish growth performance and carcass characteristics of pigs fed diets provided as pellets or in a meal form

Rodriguez, D. A., S. A. Lee, and H. H. Stein. 2018. Effects of Dakota Gold and conventional distillers dried grains with solubles on wean to finish growth performance and carcass characteristics of pigs fed diets provided as pellets or in a meal form. J. Anim. Sci. 96(Suppl. 2):141-142 (Abstr.) Link to abstract (.pdf)

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Nutrient composition and digestibility of energy and nutrients in wheat middlings and red dog fed to growing pigs

Casas, G. A., D. A. Rodriguez, and H. H. Stein. 2018. Nutrient composition and digestibility of energy and nutrients in wheat middlings and red dog fed to growing pigs. J. Anim. Sci. 96:215-224. Link to full text

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Effects of Dakota Gold distillers dried grains with solubles (DDGS) and conventional DDGS on growth performance and carcass quality of pigs fed diets as meal or as pellets

Dakota Gold is a low-oil source of distillers dried grains with solubles (DDGS) produced using a cold-fermentation process. Recent research conducted by the Stein Monogastric Nutrition Laboratory has demonstrated that the standardized ileal digestibility (SID) of amino acids is greater in Dakota Gold than in conventional DDGS, but Dakota Gold contains less metabolizable energy (ME) than conventional DDGS.

An experiment was conducted to determine effects on growth performance and carcass characteristics of feeding Dakota Gold or conventional DDGS to pigs from weaning to market. Because limited information exists about effects of pelleting on growth performance of pigs fed diets that contain DDGS, this research also tested the effects of feeding diets containing either Dakota Gold or conventional DDGS in a meal form or in a pelleted form.

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