and Stein

Amino acid digestibility in plant based protein concentrates and in Peruvian super prime fish meal fed to weanling pigs

Anti-nutritional factors in soybean meal can result in a reduction in digestibility of amino acids. Therefore, the use of soybean meal is limited in diets for weanling pigs and fish meal and other animal protein sources are often used instead. However, technologically treated plant proteins or mixtures of proteins may also be used instead of animal proteins if the treatments employed have reduced or eliminated the anti-nutritional factors. An example of 2 new plant-based proteins are protein concentrate 56 (JPC 56) and Fish Meal Replacer Omega 3 (FMR Ω 3). Both proteins are produced by Joosten, (Ab Weert, The Netherlands), but there is no information about the digestibility of amino acids in these proteins. Therefore, an experiment was conducted to test the hypothesis that the apparent ileal digestibility (AID) and the standardized ileal digestibility (SID) of amino acids in JPC 56 and FMR Ω 3 are not different from AID and SID values in fish meal.

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Effects of copper hydroxychloride and distillers dried grains with solubles on intestinal microbial protein concentration and digestibility of energy, crude protein, and acid hydrolyzed ether extract by growing pigs

The requirement for Cu for normal metabolism by weanling pigs is 5 to 6 mg/kg, but it is common practice to include additional Cu in diets for pigs to enhance growth performance. Several modes of action for the improved growth performance have been proposed, and one proposed mode of action is the ability of Cu to alter microbial activity. The apparent total tract digestibility (ATTD) of acid hydrolyzed ether extract (AEE) is improved if Cu hydroxychloride is supplemented to high fiber diets. Therefore, an experiment was conducted to test the hypothesis that inclusion of 150 mg/kg of Cu from Cu hydroxychloride (IntelliBond CII; Micronutrients USA LLC; Indianapolis, IN) to diets fed to growing pigs improves apparent ileal digestibility (AID) and ATTD of AEE, and the AID of crude protein. The second objective was to test the hypothesis that supplementing diets with Cu hydroxychloride can reduce the concentration of microbial protein in the small intestine or in the large intestine by pigs fed a corn-soybean meal diet or a diet based on corn, soybean meal, and distillers dried grains with solubles (DDGS).

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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

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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

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Role of nutrition in promoting swine health

J. Squire, and H. H. Stein. 2019. Role of nutrition in promoting swine health. In Proc. London Swine Conference, London, ON, Canada. March 26-27, 2019. Pages 19-21. Link to full text (.pdf)

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Digestible calcium and digestible phosphorus in swine diets

Lee, S. A., L. V. Lagos, and H. H. Stein. 2019. Digestible calcium and digestible phosphorus in swine diets. In Proc. London Swine Conference, London, ON, Canada. March 26-27, 2019. Pages 63-72. Link full text(.pdf)

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Oven drying of ileal digesta from growing pigs reduces the concentration of AA compared with freeze drying and results in reduced calculated values for endogenous losses and elevated estimates for ileal digestibility of AA

Lagos L. Vanessa, and Hans H. Stein. 2019. Oven drying of ileal digesta from growing pigs reduces the concentration of AA compared with freeze drying and results in reduced calculated values for endogenous losses and elevated estimates for ileal digestibility of AA. J. Anim. Sci. 2019.97:820–828. Link to full text.

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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

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