Hans H. Stein

Amino acid digestibility, Heat treatment, Metabolizable energy, Soybean meal, swine

Concentrations of digestible and metabolizable energy and amino acid digestibility by growing pigs may be reduced by autoclaving soybean meal

Oliveira, M. S. F., M. K. Wiltafsky, S. A. Lee, K. W. Kwon, and H. H. Stein. 2020. Concentrations of digestible and metabolizable energy and amino acid digestibility by growing pigs may be reduced by autoclaving soybean meal. Anim. Feed Sci. Technol. 114621. Link to full text.

Keywords:

Authors:

Oliveira, Wiltafsky, Lee, Kwon, Stein

Publication Type:

Amino acid digestibility, crystalline amino acids, Pigs, Standardized ileal digestibility

Crystalline amino acids do not influence calculated values for standardized ileal digestibility of amino acids in feed ingredients included in diets for pigs

Oliveira, Maryane S. F., Jerubella J. Abelilla, Neil W. Jaworski, John K. Htoo, and Hans H. Stein. 2020. Crystalline amino acids do not influence calculated values for standardized ileal digestibility of amino acids in feed ingredients included in diets for pigs. Journal of Animal Science, 2020, Vol. 98, No. 11, 1–8. doi:10.1093/jas/skaa333.

Keywords:

Authors:

Oliveira, Abelilla, Jaworski, Htoo, Stein

Publication Type:

Read more about Crystalline amino acids do not influence calculated values for standardized ileal digestibility of amino acids in feed ingredients included in diets for pigs

The direct and difference procedures result in similar estimates for amino acid digestibility in feed ingredients fed to growing pigs

Oliveira, Maryane S. F., John K. Htoo, and Hans H. Stein. 2020. The direct and difference procedures result in similar estimates for amino acid digestibility in feed ingredients fed to growing pigs. Journal of Animal Science, 2020, Vol. 98, No. 8, 1–8. doi:10.1093/jas/skaa225. Link to full text.

Keywords:

Amino acids, difference procedure, Digestibility, direct procedure, Soybean meal, Wheat middlings

Authors:

Oliveira, Htoo, Stein

Publication Type:

heat damage, Metabolizable energy, Maillard reaction, Rapeseed meal, Standardized ileal digestibility

Excessive heating of 00-rapeseed meal reduces not only amino acid digestibility but also metabolizable energy when fed to growing pigs

Oliveira, Maryane S. F., Markus K. Wiltafsky-Martin, and Hans H. Stein. 2020. Excessive heating of 00-rapeseed meal reduces not only amino acid digestibility but also metabolizable energy when fed to growing pigs. Journal of Animal Science, 2020, Vol. 98, No. 7, 1–9. doi:10.1093/jas/skaa219. Link to full text.

Keywords:

Authors:

Oliveira, Wiltafsky-Martin, Stein

Publication Type:

Concentration of digestible and metabolizable energy in L-threonine and L-valine biomass products fed to weanling pigs

Oliveira, M. S. F., C. D. Espinosa, J. D. Berrocoso, O. J. Rojas, J. K. Htood H. H. Stein. 2020. Concentration of digestible and metabolizable energy in L-threonine and L-valine biomass products fed to weanling pigs. Animal Feed Science and Technology 263 (2020) 114463. Link to full text.

Keywords:

Digestibility, Energy, Fish meal, Threonine biomass, Valine biomass

Authors:

Oliveira, Espinosa, Berrocoso, Rojas, Htoo, Stein

Publication Type:

Digestible and metabolizable energy in corn- or sorghum based diets may be improved by addition of a xylanase-cellulase enzyme mixture

Exogenous carbohydrases can be used in diets for pigs to increase digestibility of dietary fiber and energy in cereal grains and cereal co-products. The three main fibers in cereal grains and cereal co-products are arabinoxylans, cellulose, and mixed-linked beta glucans. The fermentability is different among these three types of fiber. Energy digestibility is often improved if xylanase is added to wheat-based diets, whereas positive responses to xylanase in corn-based diets have been difficult to demonstrate, indicating that fermentation of dietary fiber differs among ingredients. However, there is less information about effects of carbohydrases on digestibility of fiber and energy in sorghum-based diets. Therefore, an experiment was conducted to test the hypothesis that xylanase and cellulase improve the digestibility of energy and total dietary fiber in diets based on corn or sorghum with addition of high fiber co-products.

Keywords:

Metabolizable energy, Corn, Sorghum, Xylanase, Cellulose

Authors:

Publication Type:

Read more about Digestible and metabolizable energy in corn- or sorghum based diets may be improved by addition of a xylanase-cellulase enzyme mixture

Bioavailability of valine in spray-dried L-valine biomass is not different from that in crystalline L-valine when fed to weanling pigs

Oliveira, Maryane S. F., John K. Htoo, J. Caroline González-Vega, and Hans H. Stein. 2019. Bioavailability of valine in spray-dried L-valine biomass is not different from that in crystalline L-valine when fed to weanling pigs. Journal of Animal Science, 2019, 4227–4234. Link to full text.

Keywords:

Bioavailability, fermentation biomass, Growth performance, Pigs, valine

Authors:

Oliveira, Htoo, González-Vega, Stein

Publication Type:

Effects of heat treatment on digestibility of amino acids and concentration of metabolizable energy in soybean meal fed to pigs

Lee, S. A., M. S. F. Oliveira, W. B. Kwon, and H. H. Stein. 2019. Effects of heat treatment on digestibility of amino acids and concentration of metabolizable energy in soybean meal fed to pigs. Book of Abstracts. In: 1^st International Feed Technology Congress, Cologne, Germany. p. 33. (Abstr.). Link to Abstract.

Keywords:

Heat treatment, Digestibility, Amino acids, Metabolizable energy, Soybean meal

Authors:

Lee, Oliveira, Kwon, Stein

Publication Type:

Metabolizable energy, maillard reactions, Standardized ileal digestibility

Amino acid digestibility and metabolizable energy in a heating double-low rapeseed meal fed to pigs

Oliveira, M. S. F., J. K. Htoo, M. K. Wiltafsky, J. C. Gonzalez-Vega, and H. H. Stein. 2019. Amino acid digestibility and metabolizable energy in a heating double-low rapeseed meal fed to pigs. In: 6th EAAP International Symposium on Energy and Protein Metabolism and Nutrition, Belo Horizonte, Minas Gerais, Brazil, Sep. 9-12, 2019.

Keywords:

Authors:

Oliveira, Htoo, Wiltafsky, González-Vega, Stein

Publication Type:

Read more about Amino acid digestibility and metabolizable energy in a heating double-low rapeseed meal fed to pigs

Bioavailability of valine in a fermentation biomass product relative to the bioavailability in crystalline L-valine when fed to weanling pigs

Maryane S. Faria de Oliveira, John K. Htoo, Caroline J. González-Vega, John E. Thomson, Hans H. Stein . Bioavailability of valine in a fermentation biomass product relative to the bioavailability in crystalline L-valine when fed to weanling pigs. Journal of Animal Science, Volume 97, Issue Supplement_2, July 2019, Pages 78–79. (Abstr.). Link to abstract.

Keywords:

Bioavailability, valine, Performance

Authors:

Oliveira, Htoo, González-Vega, Thomson, Stein

Publication Type:

Amino acids, Digestibility, difference method, direct method

Direct vs. difference method to determine amino acid digestibility in ingredients fed to pigs

Maryane S. Faria de Oliveira, John K. Htoo, Hans H. Stein. 2019. Direct vs. difference method to determine amino acid digestibility in ingredients fed to pigs. Journal of Animal Science, Volume 97, Issue Supplement_2, July 2019, Pages 67–68. (Abstr.). Link to abstract.

Keywords:

Authors:

Oliveira, Htoo, Stein

Publication Type:

Canola meal produced from high-protein or conventional varieties of canola seeds may substitute soybean meal in diets for gestating and lactating sows without compromising sow or litter productivity

Yanhong Liu, Maryane S. F. Oliveira, Hans H Stein, 2018. Canola meal produced from high-protein or conventional varieties of canola seeds may substitute soybean meal in diets for gestating and lactating sows without compromising sow or litter productivity. Journal of Animal Science: 96:12, 5179–5187. Link full text.

Keywords:

Canola meal, Soybean meal, gestating sows, Lactating sows

Authors:

Yanhong, Oliveira, Stein

Publication Type:

Crystalline amino acids in diets do not influence calculated values for amino acid digestibility in feed ingredients fed to pigs

Oliveira, S. F. M., J. J. Abelilla, K. J. Htoo, and H. H. Stein. 2018. Crystalline amino acids in diets do not influence calculated values for amino acid digestibility in feed ingredients fed to pigs. 14th International Symposium on Digestive Physiology of Pigs. Adv. Anim. Biosci. Volume 9, Issue S2, 9:S71. (Abstr.). Link to abstract

Keywords:

Crystalline AA, Digestibility, Feed ingredients, Pigs

Authors:

Oliveira, Abelilla, Htoo, and Stein

Publication Type:

Soy protein concentrate, Soybean meal, Energy digestibility, Amino acid digestibility, Phosphorus digestibility

Digestibility of energy, amino acids, and phosphorus in a novel source of soy protein concentrate and in soybean meal fed to growing pigs

Oliveira, M. S. and H. H. Stein. 2016. Digestibility of energy, amino acids, and phosphorus in a novel source of soy protein concentrate and in soybean meal fed to growing pigs. J. Anim. Sci. 94:3343-3352. Link to full text (.pdf)

Keywords:

Authors:

Publication Type:

Energy digestibility, Soy protein concentrate, Soybean meal

Digestibility of energy in a novel source of soy protein concentrate and in soybean meal fed to weanling pigs

Soybean meal is the main protein source used in diets for pigs in the United States, as well as most countries of the world, due to the high quality of the protein it provides. However, soybean meal also contains antinutritional factors that limit its use in weanling pig diets. Pigs do not secrete the enzyme needed for the hydrolysis of raffinose and stachyose, α-galactosidase, in the small intestine. Therefore, these oligosaccharides are not enzymatically digested, but are instead fermented in the small and large intestines. This results in decreased growth performance and increased incidence of diarrhea when fed to weanling pigs.

Oligosaccharides can be removed from soybean meal using an alcohol extraction process, creating soy protein concentrate. Soy protein concentrate has greater digestibility of most amino acids and greater concentrations of digestible energy (DE) and metabolizable energy (ME) than soybean meal. A new source of soy protein concentrate called Nutrivance (Midwest Ag Enterprises Inc., Marshall, MN) has recently been introduced, which is produced using a process combining non-alcohol extraction and enzymatic treatment of soybean meal. The nutritional value of soy protein concentrate produced using this method has not been determined. Therefore, an experiment was conducted to determine the concentrations of DE and ME in soy protein concentrate and to compare these values to DE and ME in soybean meal.

Keywords:

Authors:

Publication Type:

Phosphorus digestibility, Soy protein concentrate, Soybean meal, Phytase

Read more about Digestibility of energy in a novel source of soy protein concentrate and in soybean meal fed to weanling pigs

Digestibility of phosphorus in a novel source of soy protein concentrate and in soybean meal fed to weanling pigs

Soy protein concentrate is produced by extracting some of the non-protein components of soybean meal, including soluble carbohydrates, from soybean meal. These soluble carbohydrates include oligosaccharides, which reduce the tolerance of young pigs to conventional soybean meal. With the oligosaccharides removed, soy protein concentrate can be used as a source of protein in diets for weanling pigs.

Most soy protein concentrate is produced using an alcohol extraction process. However, a new source of soy protein concentrate called Nutrivance (Midwest Ag Enterprises Inc., Marshall, MN) has recently been introduced, which uses a process combining non-alcohol extraction and enzymatic treatment of soybean meal. An experiment was conducted to determine the apparent total tract digestibility (ATTD) and standardized total tract digestibility (STTD) of phosphorus in this new ingredient.

Keywords:

Authors:

Publication Type:

Amino acid digestibility, Soy protein concentrate, Soybean meal

Read more about Digestibility of phosphorus in a novel source of soy protein concentrate and in soybean meal fed to weanling pigs

Digestibility of amino acids in a novel source of soy protein concentrate and in soybean meal fed to weanling pigs

Soybean meal is a high quality source of protein in diets fed to pigs. However, soybean meal contains anti-nutritional factors such as trypsin inhibitors and oligosaccharides, which decrease nutrient availability and limit the amount of soybean meal that can be fed in weanling pig diets.

Soy protein concentrate is produced by processing soybean meal to remove some nonprotein components, including the soluble carbohydrates. This leaves soy protein concentrate with a greater concentration of crude protein and amino acids than soybean meal. The presence of oligosaccharides in soybean meal has been shown to reduce the tolerance of young pigs to conventional soybean meal, and therefore, animal proteins rather than soybean meal is often used in diets for young pigs. However, if the oligosaccharides and other antinutritional factors can be removed from soybean meal, it is possible to use soybean meal in diets for young pigs instead of animal proteins.

Typically, an alcohol extraction process has been used to remove soluble carbohydrates from soybean meal to create soy protein concentrate. However, a new source of soy protein concentrate called Nutrivance (Midwest Ag Enterprises Inc., Marshall, MN) has recently been introduced. Nutrivance is produced using a process combining non-alcohol extraction and enzymatic treatment of soybean meal. The nutritional value of soy protein concentrate produced using this method has not been determined. Therefore, an experiment was conducted to determine the digestibility of amino acids in this new source of soy protein concentrate.

Keywords:

Authors:

Publication Type: