Pigs

Effects of a novel E. coli phytase expressed in Pseudomonas fluorescens on growth, bone mineralization, and nutrient digestibility in pigs fed corn–soybean meal diets

Ren, Ping, Laia Blavi, Caroline González-Vega, Yanhong Liu, Deana Hancock, Mercedes Vazquez-Añón, Ferdinando N. Almeida, and Hans H. Stein. 2020. Effects of a novel E. coli phytase expressed in Pseudomonas fluorescens on growth, bone mineralization, and nutrient digestibility in pigs fed corn–soybean meal diets. Transl. Anim. Sci.

Effect of feed sweetener and feed flavor on growth performance of weanling pigs

Espinosa, Charmaine D., Xixi Chen, Yan Lei, Jirong Lv, Hans H. Stein. 2020. Effect of feed sweetener and feed flavor on growth performance of weanling pigs. Journal of Animal Science, Volume 98, Issue Supplement_4, November 2020, Pages 108. (Abstr.). Link to abstract.

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Effects of copper hydroxychloride on growth performance and abundance of genes involved in lipid metabolism of growing pigs

Espinosa, Charmaine, Robert Scott Fry, Matthew Kocher, Hans H Stein. 2020. Effects of copper hydroxychloride on growth performance and abundance of genes involved in lipid metabolism of growing pigs. Journal of Animal Science, Volume 98, Issue Supplement_3, November 2020, Page 106. (Abstr.). Link to abstract.

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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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Enhanced torula yeast has increased nutritional value compared to fish meal when fed to weanling pigs

Lancheros, Paola, Vanessa Lagos, Hans H Stein. 2020. Enhanced torula yeast has increased nutritional value compared to fish meal when fed to weanling pigs. Journal of Animal Science, Volume 98, Issue Supplement_3, November 2020, Page 62. (Abstr.). Link to abstract.

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Effects of dietary isoleucine and valine supplementation to excess or low leucine diets on nitrogen balance and metabolism of branched-chained amino acids in growing pigs

Kwon, Woong B., Jose A. Soto, Hans H. Stein. 2020. Effects of dietary isoleucine and valine supplementation to excess or low leucine diets on nitrogen balance and metabolism of branched-chained amino acids in growing pigs. Journal of Animal Science, Volume 98, Issue Supplement_3, November 2020, Page 33. (Abstr.). Link to abstract.

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Digestibility of energy and concentrations of digestible and metabolizable energy in a high protein corn product fed to growing pigs

A new source of corn protein (NexPro) that is produced from the ethanol industry has been developed by Flint Hills Resources (Wichita, KS). NexPro contains approximately 50% crude protein and the digestibility of amino acids was reported in our November, 2020, Newsletter. However, there is at this time no information about the concentration of digestible energy (DE) and metabolizable energy (ME) in this new source of protein. Therefore, the objective of this experiment was to test the hypothesis that concentrations of DE and ME in corn protein are greater than in 2 sources of distillers dried grains with solubles (DDGS; i.e., DDGS-1 and DDGS-2) when fed to growing pigs.

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Influence of a novel consensus bacterial 6-phytase variant on mineral digestibility and bone ash in young growing pigs fed diets with different concentrations of phytate

Microbial phytase is usually included in diets for pigs to increase P absorption and utilization by hydrolyzing phytate within the gastrointestinal tract of pigs. High doses of phytase (i.e., > 1,000 FTU/kg) is also hypothesized to increase release of nutrients other than P due to increased degradation of phytate. A next generation biosynthetic bacterial 6-phytase (PhyG; DuPont Animal Nutrition) may increase digestibility of nutrients in diets for pigs; however, there are no data to demonstrate the efficacy of this phytase. Therefore, an experiment was conducted to test the hypothesis that the negative impact of phytate is reduced at higher phytase doses. It was also the objective of this research to test the hypothesis that inclusion of increasing levels of phytase increases bone ash and apparent total tract digestibility (ATTD) of minerals in diets containing varying phytate concentrations.

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Nutritional value of a new source of fermented soybean meal fed to growing pigs

Espinosa, Charmaine D. , Maryane S. F. Oliveira, L. Vanessa Lagos, Terry L. Weeden, Aileen J. Mercado, and Hans H. Stein. 2000. Nutritional value of a new source of fermented soybean meal fed to growing pigs. Journal of Animal Science, 2020, Vol. 98, No. 12, 1–9. doi:10.1093/jas/skaa357. Link to full text.

Effects on nitrogen balance and metabolism of branched-chain amino acids by growing pigs of supplementing isoleucine and valine to diets with adequate or excess concentrations of dietary leucine

Kwon, Woong B., Jose A. Soto, and Hans H. Stein. 2020. Effects on nitrogen balance and metabolism of branched-chain amino acids by growing pigs of supplementing isoleucine and valine to diets with adequate or excess concentrations of dietary leucine. Journal of Animal Science, 2020, Vol. 98, No. 11, 1–10. doi:10.1093/jas/skaa346.

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Espinosa, C. D., J. P. Acosta, and H. H. Stein. 2020. Growth performance not sacrificed with corn protein. National Hog Farmer, On-line edition, October, 2020.

Espinosa, C. D., J. P. Acosta, and H. H. Stein. 2020. Growth performance not sacrificed with corn protein. National Hog Farmer, On-line edition, October, 2020. Link to full text.

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Digestibility of amino acids in a high protein corn product fed to growing pigs

Corn coproducts produced from the ethanol industry are often used in diets for pigs. A new source of corn protein (NexPro; Flint Hills Resources, Wichita, KS) has been developed, but at this time there is limited information about the nutritional value of this new source of corn protein. Therefore, the objective of this experiment was to test the hypothesis that the standardized ileal digestibility (SID) of amino acids  in corn protein is greater than in 2 sources of distillers dried grains with solubles (DDGS; i.e., DDGS-1 and DDGS-2) when fed to growing pigs.

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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.

Conditioning and expansion increase nutritional value of soybean expellers

Soybean expellers contain trypsin inhibitors, which negatively affect nutrient digestibility, feed efficiency, and health status of animals. Therefore, heat treatment is needed to inactivate trypsin inhibitors to improve nutrient digestibility in soybean expellers. Different types and degrees of processing conditions may influence digestibility of energy and amino acids (AA) in soybean expellers, but there is a lack of data demonstrating how long heat treatment is needed if soybean expellers are expander processed after hydrothermical conditioning. Therefore, 2 experiments were conducted to test the hypothesis that the standardized ileal digestibility (SID) of AA, as well as values for digestible energy (DE) and metabolizable energy (ME) in soybean expellers increase the longer heat is applied to the expellers.

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Standardized ileal digestibility of amino acids in six sources of partially de-hulled sunflower meal and one source of sunflower expellers from Ukraine, Hungary, Italy, and the U.S. when fed to growing pigs

Sunflower meal, which is the co-product derived from sunflower seeds after oil extraction, has a high concentration of digestible amino acids (AA) and fiber. The nutritive value and quality of sunflower meal is partially dependent on the degree of dehulling, the variety of the sunflower, and the oil extraction process. Sunflower seeds are initially de-hulled and then partially de-oiled using a mechanial prepress procedure. A second de-oiling procedure is performed using a solvent extraction procedure or by usign a second mechanical expelling procedure. The prepress-solvent extraction procedure results in production of sunflower oil and sunflower meal that contains 1 to 3% oil, whereas the double-press procedure results in production of sunflower oil and a sunflower product that contains 5 to 10% residual oil and commonly is referred to as sunflower expellers. Some of the hulls may be added back to the sunflower meal or the sunflower expellers resulting in differences in concentrations of total dietary fiber among sources.

The apparent ileal digestibility and the standardized ileal digestibility (SID) of crude protein (CP) and AA in individual sources of partially de-hulled sunflower meal fed to pigs have been reported. However, there are no comparative values for the SID of AA in sunflower meal produced in different parts of the world, and it is not known if the SID of AA in sunflower meal are different from those in sunflower expellers. Therefore, the objective of the current study was to test the hypothesis that there is no difference in the SID of CP and AA in different sources of sunflower meal and sunflower expellers obtained from different countries.

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Effect of torula yeast on growth performance, diarrhea incidence, and blood characteristics in weanling pigs

Espinosa, Charmaine D., L. Vanessa Lagos, and Hans H. Stein. 2020. Effect of torula yeast on growth performance, diarrhea incidence, and blood characteristics in weanling pigs. Journal of Animal Science, 2020, Vol. 98, No. 10, 1–9. doi:10.1093/jas/skaa307. Link to full text.
 

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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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Effects of adding HCl to collection bags or collection pitchers on amino acid digestibility in corn, soybean meal, or wheat middlings fed to growing pigs

In most AA digestibility experiments collection bags are changed at least every 30 min and the collected ileal digesta are stored at –20 °C to prevent microbial degradation of proteins. Other attempts to reduce microbial activity in digesta include adding acids to collection bags to reduce the pH in ileal digesta. Acids may also be added to collection pitchers. However, in some experiments, no attempt to reduce pH is made because it is assumed that the rapid reduction in temperature after collection is sufficient to prevent microbial degradation of proteins.

To our knowledge, there is, however, no information about the necessity of adding acids to collected digesta and it is not known if values for apparent ileal digestibility (AID), basal endogenous losses of AA, or standardized ileal digestibility (SID) of AA are influenced by addition of acids to digesta. Therefore, the objective of this experiment was to test the null-hypothesis that values for AID, basal endogenous losses, and SID of AA are not influenced by addition of acids to ileal digesta collection bags or to collection pitchers.

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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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