Growing pigs

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.

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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.

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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.

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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.

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Effect of dietary calcium on growth performance of growing pigs

S. A. Lee, 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)

 

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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.

 

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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.

 

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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)

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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)

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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)

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Comparative digestibility of energy and nutrients in diets fed to sows and growing pigs

Lowell, J. E., Y. Liu, and H. H. Stein. 2015. Comparative digestibility of energy and nutrients in diets fed to sows and growing pigs. Arch. Anim. Nutr. 69:79-97. Link to full text (.pdf)

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Comparative digestibility of energy and nutrients in feed ingredients fed to sows and growing pigs

Lowell, J. E., Y. Liu, and H. H. Stein. 2014. Comparative digestibility of energy and nutrients in feed ingredients fed to sows and growing pigs. J. Anim. Sci 92(E-Suppl. 2):226 (Abstr.) Link to abstract (.pdf)

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Effects of reducing the particle size of corn on growth performance and carcass characteristics of growing-finishing pigs

Rojas, O. J. and H. H. Stein. 2014. Effects of reducing the particle size of corn on growth performance and carcass characteristics of growing-finishing pigs. J. Anim. Sci. 92(Suppl. 2):52 (Abstr.) Link to abstract (.pdf)

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Amino acid digestibility of corn distillers solubles-related co-products in growing pigs

Soares, J. A., H. H. Stein, G. C. Shurson, and J. E. Pettigrew. 2009. Amino acid digestibility of corn distillers solubles-related co-products in growing pigs. J. Anim. Sci. 87 (E-Suppl. 3):67 (Abstr.) Link to abstract (.pdf)

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Effects of virginiamycin on microbial ecology in ileal digesta and feces of growing pigs

M. Song, L. L. Stewart, J. Barnes, B. R. Gramm, R. D. Nimmo, H. H. Stein, J. E. Pettigrew. 2008. Effects of virginiamycin on microbial ecology in ileal digesta and feces of growing pigs. J. Anim. Sci. 86(E-Suppl. 2):53-54 (Abstr.) Link to abstract (.pdf)

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Assessment of the feeding value of South Dakota grown field peas for growing pigs

Stein, H. H., R. A. Bohlke, V. Rayadurg, D. Peters, and R. C. Thaler. 2002. Assessment of the feeding value of South Dakota grown field peas for growing pigs. J. Anim. Sci. 80(Suppl. 2):63 (Abstr.) Link to abstract (.pdf)

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Formulating diets to reproducing and growing pigs using field peas

Stein, H. H. 2006. Formulating diets to reproducing and growing pigs using field peas. P 43-49 in Proc. 2nd joint meeting of the MPA of ND and NDPC. Fargo, ND, November 28-29, 2006. Link to full text (.pdf)

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Possibilities for feeding low-protein diets to weanling and growing pigs

Stein, H. H. 2006. Possibilities for feeding low-protein diets to weanling and growing pigs. P. 1-6 in Proc. Degussa Tech. Symp. at the Carolina Nutr. Conf., Sep. 26, Raleigh, NC. Link to full text (.pdf)

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Comparative amino acid digestibilities in adult sows and growing pigs

Stein, H. H., 1997. Comparative amino acid digestibilities in adult sows and growing pigs. In: Proc. of Swine Summit '97. p. 74-79. Heartland Lysine Inc., Chicago, IL USA.  Link to full text (.pdf)

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Evaluating the effects of supplemental B vitamins in practical swine diets during the starter and grower-finisher periods

Mahan, D. C., S. D. Carter, T. R. Cline, G. Hill, S. W. Kim, P. S. Miller, J. L. Nelssen, H. H. Stein, and T. L. Veum. 2007. Evaluating the effects of supplemental B vitamins in practical swine diets during the starter and grower-finisher periods. A regional study. J. Anim. Sci. 85:2190-2197. Link to full text (.pdf)

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