Espinosa

Influence of a novel phytase on Ca and P digestibility in diets fed to sows in late-gestation and lactation

Espinosa Charmaine D., Leidy J. Torres-Mendoza, Jonathan R. Bergstrom, Hans H. Stein. 2024. Influence of a novel phytase on Ca and P digestibility in diets fed to sows in late-gestation and lactation. Animal Feed Science and Technology 309 (2024) 115906. doi.org/10.1016/j.anifeedsci.2024.115906. Link to full text.

Nutrient composition and digestibility by growing pigs of amino acids and energy vary between wheat middlings from Europe and the United States

Espinosa, Charmaine D., Leidy J. Torres-Mendoza, Hans H. Stein. 2024. Nutrient composition and digestibility by growing pigs of amino acids and energy vary between wheat middlings from Europe and the United States. Animal Feed Science and Technology 309 (2024) 115905. doi.org/10.1016/j.anifeedsci.2024.115905.

Reproductive performance and immune status of sows fed diets containing Olextra 1200 during lactation

The olive oil tree (Olea europaea L.) contains hydrophilic and lipophilic bioactive compounds, which include flavones, phenolic acids, phenolic alcohols, secoiridoids, and hydroxycinnamic acid derivatives. These bioactive compounds have anti-inflammatory, antimicrobial, and antioxidant properties, and therefore, olive-derived plant bioactive compounds may reduce chronic inflammation and intestinal integrity in pigs. Therefore, olive-derived plant bioactive compounds, such as Olextra 1200, may improve health and prevent disease by inhibiting B cell activation and cytokine expression. However, there is a lack of data demonstrating effects of olive extracts on reproductive performance of sows and their offspring. Therefore, the objective of this experiment was to test the hypothesis that dietary supplementation of Olextra 1200 increases reproductive performance as well as the immune status of sows.

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Effect of Microbial Phytase on Digestibility of Phosphorus in Seven Sources of Sunflower co-Products Fed to Growing Pigs

Ibagon, Jimena A., Hans H. Stein, Charmaine D. Espinosa. 2023. Effect of Microbial Phytase on Digestibility of Phosphorus in Seven Sources of Sunflower co-Products Fed to Growing Pigs. J. Anim. Sci. Volume 101, Issue Supplement 2, Pages 303–304, doi.org/10.1093/jas/skad341.345. Link to abstract.

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Endosperm Hardness in Corn Affects the Digestibility of Energy and Fiber, and Increased Drying Temperature Reduces Amino Acid Digestibility

Espinosa, Charmaine D., Joaquin Cabañas-Ojeda, Edgar Oviedo-Rondon, Hans H. Stein. 2023. Endosperm Hardness in Corn Affects the Digestibility of Energy and Fiber, and Increased Drying Temperature Reduces Amino Acid Digestibility. J. Anim. Sci., Volume 101, Issue Supplement 2, Pages 299–300, doi.org/10.1093/jas/skad341.340. Link to abstract.

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Effect of Two Torula Yeast Sources on Growth Performance, Intestinal Health, and Immune Function of Weanling Pigs

Espinosa, Charmaine D., Hans H. Stein. 2023. Effect of Two Torula Yeast Sources on Growth Performance, Intestinal Health, and Immune Function of Weanling Pigs. J. Anim. Sci., Volume 101, Issue Supplement 2, Pages 298–299, doi.org/10.1093/jas/skad341.339. Link to abstract.

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Concentration of Digestible Energy in Corn-Based Diets Fed to Gestating and Lactating Sows is Increased by Adding Xylanase to the Diets

Acosta Medellin, Jessica P., Charmaine D. Espinosa, Gemma Gonzalez Ortiz, Hans H. Stein. 2023. Concentration of Digestible Energy in Corn-Based Diets Fed to Gestating and Lactating Sows is Increased by Adding Xylanase to the Diets. J. Anim. Sci., Volume 101, Issue Supplement 2, Pages 35–36, doi.org/10.1093/jas/skad341.040. Link to abstract.

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Increasing phosphorus digestibility in novel corn fermented products

Espinosa, C. D., J. D. Ward, and H. H. Stein. 2023. Increasing phosphorus digestibility in novel corn fermented products. National Hog Farmer, July 27, 2023.

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Ferulic and coumaric acid in corn and soybean meal-based diets and in feces from pigs fed these diets

Lancheros, Jeimmy Paola, Charmaine D. Espinosa, Roelant Hilgers, Mirjam A. Kabelb, and Hans H. Stein. 2023. Ferulic and coumaric acid in corn and soybean meal-based diets and in feces from pigs fed these diets. J. Sci. Food Agric. 103: 5171–5176. doi 10.1002/jsfa.12572. Link to full text.

Effects of corn hardness and drying temperature on digestibility of energy and nutrients in diets fed to growing pigs

Espinosa, Charmaine D., Joaquin Cabañas-Ojeda, Edgar O. Oviedo-Rondón, and Hans H. Stein. 2023. Effects of corn hardness and drying temperature on digestibility of energy and nutrients in diets fed to growing pigs. Journal of Animal Science, 101: 1–9. doi.org/10.1093/jas/skad124. Link to full text.

Torula yeast may improve intestinal health and immune function of weanling pigs

Espinosa, Charmaine D., Leidy J. Torres-Mendoza, and Hans H. Stein. 2023. Torula yeast may improve intestinal health and immune function of weanling pigs. Journal of Animal Science: 101, 1–11. doi.org/10.1093/jas/skad087. Link to full text.

Exogenous xylanase increases digestibility of energy and fiber in diets for gestating and lactating sows

Exogenous enzymes may improve the fermentability of dietary fiber in swine diets by hydrolyzing non-starch polysaccharides into oligosaccharides and sugars. In particular, the enzyme xylanase hydrolyzes the β-(1-4) glycosidic bonds between the xylose units in the backbone of arabinoxylans in cereal grains and grain coproducts, resulting in the release of a combination of xylose, arabinose, and xylo-oligosaccharides from arabinoxylans that can be fermented by pigs. Previous data indicate that xylanase increased the degradation of dietary fiber and increased energy digestibility in diets for growing pigs; however, there are limited data for the impact of xylanase on energy and fiber digestibility in gestating and lactating sows. Therefore, an experiment was conducted to test the hypothesis that exogenous xylanase added to diets for gestating and lactating sows will increase the apparent total tract digestibility (ATTD) of gross energy and total dietary fiber (TDF), and increase the concentrations of digestible energy (DE) and metabolizable energy (ME) during two reproductive cycles.

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Variability in wheat middlings; are there differences in digestibility, composition among sources?

Espinosa, C. D., and H. H. Stein. 2023. Variability in wheat middlings; are there differences in digestibility, composition among sources?  National Hog Farmer, March/April 2023. Link to full text.

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Effects of different corn sources and drying temperature on digestibility of energy and total dietary fiber in diets fed to growing pigs

Drying temperatures and corn varieties that inherently differ in kernel hardness, virtuousness, and protein solubility index may influence nutrient digestibility in corn. However, information about interactive effects of corn source (i.e., endosperm hardness) and drying method on energy and nutrient digestibility is limited. Therefore, an experiment was conducted to test the hypothesis that that the apparent total tract digestibility (ATTD) of gross energy (GE) and total dietary fiber (TDF) is influenced by corn source and drying temperature.

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Effects of different corn sources and drying temperature on ileal digestibility of starch and amino acids in diets fed to growing pigs

Drying temperatures and corn varieties that inherently differ in kernel hardness, virtuousness, and protein solubility index may influence nutrient digestibility in corn. However, information about interactive effects of corn source (i.e., endosperm hardness) and drying method on nutrient digestibility is limited. Therefore, an experiment was conducted to test the hypothesis that the ileal digestibility of starch, crude protein (CP), and amino acids (AA) is influenced by corn source and drying temperature.

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Fiber in Swine Nutrition

Lancheros, J. P., C. D. Espinosa, S. A. Lee, M. S. Oliveira, and H. H. Stein. 2022. Fiber in Swine Nutrition. L. I. Chiba, editor, Sustainable Swine Nutrition. 2nd rev. ed. doi:10.1002/9781119583998.ch14. Link to full text.

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Digestibility of phosphorus in high protein corn co-products fed to growing pigs

New sources of high protein corn co-products have been recently developed and may be included in diets fed to pigs. Phytase is often employed during fermentation in the bioethanol process to improve the efficiency of fermentation. However, the use of phytase during fermentation may impact the nature of phosphorus (P) in any post fermentation products, which could subsequently alter the levels of phytate-bound and non-phytate P. As a consequence, this may influence digestibility and concentration of digestible P in any feed product derived from fermentation. Therefore, an experiment was conducted to determine the standardized total tract digestibility (STTD) of P in high protein corn fermented products and in the residual distillers dried grains and solubles (DDGS) produced from a fermentation with or without the use of phytase. It is also the objective of this experiment to test the hypothesis that inclusion of phytase during the fermentation process increases P digestibility in corn co-products.

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Growth performance of weanling pigs fed diets containing spray-dried bovine plasma or hydrolyzed spray-dried bovine plasma

Espinosa, C. D., J. M. Campbell, H. H. Stein. 2022. Growth performance of weanling pigs fed diets containing spray-dried bovine plasma or hydrolyzed spray-dried bovine plasma. Animal Feed Science and Technology 294 (2022) 115500. Link to full text.
 

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Digestibility of energy in ten sources of wheat middlings fed to growing pigs

Data have been published for the composition of wheat middlings from flour mills in the U.S. and data for digestible energy (DE) and metabolizable energy (ME) have been reported as well. However, it is not known if the data obtained in wheat middlings from the U.S. also are representative for wheat middlings in Europe. Therefore, an experiment was conducted to test the null hypothesis that there are no differences in composition, apparent total tract digestibility (ATTD) of gross energy (GE), and concentration of DE and ME between wheat middlings sourced from flour mills in Europe and in the U.S.

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Digestibility of amino acids in ten sources of wheat middlings fed to growing pigs

Data for the composition of wheat middlings from flour mills in the U.S. and for the standardized ileal digestibility (SID) of crude protein (CP) and amino acids (AA) have been published for wheat middlings from the U.S. However, it is not known if the data obtained from wheat middlings from the U.S. also are representative for wheat middlings in Europe. Therefore, an experiment was conducted to test the hypothesis that there are no differences in composition and SID of CP and AA between wheat middlings sourced from flour mills in Europe and in the U.S.

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