Growing pigs

Disappearance of dietary fibre in the small intestine, large intestine, and total tract of growing pigs fed corn- or wheat-based diets without or with microbial xylanase

Abelilla, J. J., and H. H. Stein. 2019. Disappearance of dietary fibre in the small intestine, large intestine, and total tract of growing pigs fed corn- or wheat-based diets without or with microbial xylanase. Manipulating Pig Production XVII. Proc. 17th Biennial Conference of the Australasian Pig Sci. Ass. (APSA), Adelaide, Australia, 17-20 Nov. 2019. Adv. Anim.

Authors: 
Publication Type: 

Effects of dietary leucine and tryptophan supplementation on serotonin metabolism and growth performance of growing pigs

Tryptophan is an indispensable AA that is often limiting for growth in pigs fed corn-soybean meal-based diets. Tryptophan may act as a regulator of feed intake by enhancing serotonin signaling in the brain, because Trp is a precursor for serotonin. High Trp intake increases feed intake, and this is partly attributed to increased serotonin synthesis. Availability of dietary Trp in the brain is considered the rate-limiting step in hypothalamic serotonin synthesis. However, to be transported into the brain, Trp competes with other large neutral AA such as Val, Leu, Ile, Tyr, and Phe for a common transporter (L-type AA transporter 1) to cross the blood-brain barrier.

Authors: 
Publication Type: 

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.

Authors: 
Publication Type: 

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.

Authors: 

Sows in mid-gestation have reduced digestibility and retention of calcium and phosphorus compared with growing pigs

Lee, S., C. Walk, and H. Stein. 2018. Sows in mid-gestation have reduced digestibility and retention of calcium and phosphorus compared with growing pigs. 14th International Symposium on Digestive Physiology of Pigs. Adv. Anim. Biosci. Volume 9, Issue S2, 9:S193-194. (Abstr.). Link to abstract

Authors: 
Publication Type: 

Digestible energy content of Camelina sativa co-products for growing pigs

Cerisuelo, A., P. Ferrer, E. Gómez, T. Woyengo, H. Stein, J. Cano, and O. Piquer. Digestible energy content of Camelina sativa co-products for growing pigs. 2018. 14th International Symposium on Digestive Physiology in Pigs. Adv. Anim. Biosci. Volume 9, Issue S2, 9:S184. (Abstr.). Link to abstract

Publication Type: 

Concentrations of digesta metabolites in growing pigs are influenced by dietary energy level, but not by dietary amino acid level

Song, Y., Y. Hung, M. Trudeau, L. Blavi, H. H. Stein, L. Payling, W. Li, P. Urriola, and C. Chen. 2018. Concentrations of digesta metabolites in growing pigs are influenced by dietary energy level, but not by dietary amino acid level.  Link to abstract

Publication Type: 

Protein and amino acid digestibility of Camelina sativa co-products for growing pigs

Cerisuelo, A., P. Ferrer, E. Gómez, H. Stein, T. Woyengo, J. Cano, and O. Piquer. 2018. Protein and amino acid digestibility of Camelina sativa co-products for growing pigs. 14th International Symposium on Digestive Physiology of Pigs. Adv. Anim. Biosci. Volume 9, Issue S2, 9:S148-149. (Abstr.). Link to abstract

Publication Type: 

Effects of two direct fed microbials on digestibility of amino acids and energy in diets fed to growing pigs

Blavi, L., J. Jørgensen, and H. Stein. 2018. Effects of two direct fed microbials on digestibility of amino acids and energy in diets fed to growing pigs. 14th International Symposium on Digestive Physiology of Pigs. Adv. Anim. Biosci. Volume 9, Issue S2, 9:S147. (Abstr.). Link to abstract

Publication Type: 

Excessive heat treatment of distillers dried grains with solubles reduces not only amino acid digestibility but also concentrations of metabolizable energy when fed to growing pigs

Distillers dried grains with solubles (DDGS) is a co-product of ethanol production that is often used in diets fed to pigs because of a relatively high concentration of amino acids (AA), energy, and digestible phosphorus. However, during the cooking and drying steps, the high temperature and concentration of moisture makes DDGS susceptible to the Maillard reactions, resulting in formation of sugar-amino acid complexes. Maillard reaction products result in reduced standardized ileal digestibility (SID) of amino acids (AA), with Lys being the most sensitive AA. However, there is limited information about how heating affects the concentration of digestible energy (DE) and metabolizable energy (ME). Therefore, the objective of these experiments were to test the hypothesis that both the degree of heating and the time that heat is applied will affect the concentration of DE and ME and the SID of AA in DDGS fed to growing pigs.

Authors: 
Publication Type: 

Degradation of dietary fiber in the stomach, small intestine, and large intestine of growing pigs fed corn- or wheat-based diets without or with microbial xylanase

Abelilla Jerubella J.,  and Hans H. Stein. 2019. Degradation of dietary fiber in the stomach, small intestine, and large intestine of growing pigs fed corn- or wheat-based diets without or with microbial xylanase. J. Anim. Sci. 97:338–352. Link to full text.

Authors: 

Excessive heat treatment of double-low rapeseed meal reduces not only amino acid digestibility but also concentrations of metabolizable energy when fed to growing pigs

Double-low rapeseed meal (RSM) is currently used as a protein ingredient in animal diets. Heat treatment of RSM at varying processing conditions removes the residual hexane and efficiently reduces the glucosinolate content. However, variations in heat processing temperatures and duration of heat treatment may result in Maillard reactions, resulting in the formation of sugar-amino acid complexes. Maillard reaction products result in reduced standardized ileal digestibility (SID) of amino acids (AA), with Lys being the most sensitive AA. However, there is limited information about how heating affects the concentration of digestible energy (DE) and metabolizable energy (ME). Therefore, the objective of this experiment was to test the hypothesis that both the degree of heating and the time that heat is applied will affect the concentration of DE and ME and the SID of AA in double-low RSM fed to growing pigs.

Authors: 
Publication Type: 

Effects of increasing concentrations of an Escherichia coli phytase on the apparent ileal digestibility of amino acids and the apparent total tract digestibility of energy and nutrients in corn-soybean meal diets fed to growing pigs

Yue She, J. Chris Sparks, and Hans H. Stein. 2018. Effects of increasing concentrations of an Escherichia coli phytase on the apparent ileal digestibility of amino acids and the apparent total tract digestibility of energy and nutrients in corn-soybean meal diets fed to growing pigs. J. Anim. Sci. 96:2804–2816.

Link to full text.

Authors: 

Apparent and standardized ileal digestibility of AA and starch in hybrid rye, barley, wheat, and corn fed to growing pigs

McGhee Molly L. and Hans. H. Stein. 2018. Apparent and standardized ileal digestibility of AA and starch in hybrid rye, barley, wheat, and corn fed to growing pigs. J. Anim. Sci. 96:3319–3329.  Link to full text.

Authors: 

Effect of dietary calcium on growth performance of growing pigs

Lee, S. A., Vanessa Lagos, and Hans H. Stein. 2018. Effect of dietary calcium on growth performance of growing pigs. Pages 173 - 184. XXXIV Specialization Course FEDNA, Madrid, Nov. 22 - 23, 2018. Link to full text (.pdf)

 

Authors: 
Publication Type: 

Effects of dietary leucine concentration on branched-chain amino acid metabolism in growing pigs

Leucine, Val, and Ile are categorized as the branched-chain AA (BCAA) because of the structural similarity of their side chains. All 3 BCAA share the enzymes that are involved in the first 2 steps of their catabolic pathway. The first step is a transamination step catalyzed by BCAA transaminase (BCAT) and producing branched-chain α-keto acids (BCKA). The second step is an irreversible degradation step catalyzed by branched-chain α-keto acid dehydrogenase (BCKDH). In the second step, Leu has been considered a key regulator as its BCKA metabolite (α-keto isocaproate) stimulates activation of the BCKDH complex in the liver. When excess Leu in diets is offered to pigs, degradation of all 3 BCAA may increase because of increased activity of BCAT and BCKDH. Leucine and Trp are both categorized as large neutral AA, and they share a common uptake pathway across the blood-brain barrier. Therefore, it is possible that excessive Leu may result in reduced Trp uptake into the brain due to competition for transporters, resulting in reduced serotonin synthesis.

 

Authors: 
Publication Type: 

Effects of two direct fed microbials on ileal digestibility of amino acids and total tract digestibility of crude protein and gross energy in diets fed to growing pigs

Direct fed microbials (DFM) are defined as live microorganisms that offer a health benefit for the host when administered in appropriate and regular quantities. Bacillus-based DFM are aerobic, spore-forming bacteria that may enhance the host animal’s immune response and improve growth performance in weanling pigs. Bacillus spp. also produce extracellular enzymes that may enhance digestibility and absorption of nutrients.

An experiment was, therefore, conducted to test the hypothesis that two DFM containing Bacillus strains (provided by Chr. Hansen A/S, Horsholm, Denmark) improve the apparent ileal digestibility (AID) of AA, CP, and GE, the apparent total tract digestibility (ATTD) of CP and GE, and hindgut digestibility of CP and GE when fed to growing pigs.

 

Publication Type: 

Calcium digestibility and requirements for digestible calcium by growing pigs

González-Vega, J. C., L. M. Merriman, and H. H. Stein. Calcium digestibility and requirements for digestible calcium by growing pigs. Pages 57-61 in Proc. Midwest Swine Nutr. Conf. Indianapolis, IN, Sep. 9, 2016. Link to full text (.pdf)

Publication Type: 

Digestible calcium requirements for 25 to 50 kg pigs

González-Vega, J. C., C. L. Walk, and H. H. Stein. 2016. Digestible calcium requirements for 25 to 50 kg pigs. J. Anim. Sci. 94(Suppl. 2):101 (Abstr.) Link to abstract (.pdf)

Publication Type: 

Requirements for digestible Ca by growing pigs

González-Vega, J. C., C. L. Walk, and H. H. Stein. 2016. Requirements for digestible Ca by growing pigs. J. Anim. Sci. 94(Suppl. 2):101 (Abstr.) Link to abstract (.pdf)

Publication Type: 

Pages