Casas

Rice coproducts may replace other cereals without negative impact

Casas, G. A., and H. H. Stein. 2017. Rice coproducts may replace other cereals without negative impact. National Hog Farmer, Online edition, November 30, 2017. Link to full text.

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Optimising soy protein concentrate use in pig diets

Huang, C., H. H. Stein, and G. A. Casas. 2016. Optimising soy protein concentrate use in pig diets. Pages 32-33 in Pig Progress, July 2016. Link to full text (.pdf)

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SPC for piglets: Performance and immunity

Sugui P., H. H. Stein and G. A. Casas. 2016. SPC for piglets: Performance and immunity. Pig Progress, March 2016. Link to full text.

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Increasing levels of microbial phytase increases the digestibility of energy and minerals in diets fed to pigs

Arredondo Mónica A., Gloria A. Casas, Hans H. Stein. 2019. Increasing levels of microbial phytase increases the digestibility of energy and minerals in diets fed to pigs. Anim. Feed Sci. Technol. 248: 27 - 36. Link to full text.

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Arabinoxylan is the main polysaccharide in fiber from rice coproducts, and increased concentration of fiber decreases in vitro digestibility of dry matter

Casas Gloria A., Helle N. Lærke, Knud E. Bach Knudsen, Hans H. Stein. 2019. Arabinoxylan is the main polysaccharide in fiber from rice coproducts, and increased concentration of fiber decreases in vitro digestibility of dry matter. Anim. Feed Sci. Technol. 247: 255 - 261. Link to full text.

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The level of feed intake does not influence digestibility of calcium and phosphorus in diets fed to gestating sows, but gestating sows have reduced digestibility of calcium and phosphorus compared with growing gilts

Lee, S. A., G. A. Casas, and H. H. Stein. 2018. The level of feed intake does not influence digestibility of calcium and phosphorus in diets fed to gestating sows, but gestating sows have reduced digestibility of calcium and phosphorus compared with growing gilts. Can. J. Anim. Sci. 98:591-594. Link to abstract

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Non-antibiotic feed additives in diets for pigs: A review

Yanhong Liu, Charmaine D. Espinosa, Jerubella J. Abelilla, Gloria A. Casas, L. Vanessa Lagos, Su A. Lee, Woong B. Kwon, John K. Mathai, Diego M.D.L. Navarro, Neil W. Jaworski, Hans H. Stein. 2018. Non-antibiotic feed additives in diets for pigs: A review. Anim. Nutr. 4:113-125. Link to full text (.pdf)

Ileal digestibility of amino acids in selected feed ingredients fed to young growing pigs

Casas, G. A., N. W. Jaworski, J. K. Htoo, and H. H. Stein. 2018. Ileal digestibility of amino acids in selected feed ingredients fed to young growing pigs. J. Anim. Sci. 96:2361–2370. Link to abstract

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Effects of full fat rice bran and defatted rice bran on growth performance and carcass characteristics of growing-finishing pigs

Casas, G. A., M. F. Overholt, A. C. Dilger, D. D. Boler, and H. H. Stein. 2018. Effects of full fat rice bran and defatted rice bran on growth performance and carcass characteristics of growing-finishing pigs. J. Anim. Sci. 96:2293–2309. Link to abstract

Chemical composition and digestibility of energy, dry matter, amino acids, and fiber in wheat middlings and red dog fed to growing pigs

Casas, G. A., D. A. Rodriguez, and H. H. Stein. 2018. Chemical composition and digestibility of energy, dry matter, amino acids, and fiber in wheat middlings and red dog fed to growing pigs. J. Anim. Sci. 96(Suppl. 2):175-176 (Abstr.) Link to abstract (.pdf)

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Effects of different levels of full fat rice bran or defatted rice bran on growth performance and carcass quality of pigs

Casas, G. A. and H. H. Stein. 2018. Effects of different levels of full fat rice bran or defatted rice bran on growth performance and carcass quality of pigs. J. Anim. Sci. 96(Suppl. 2):174-175 (Abstr.) Link to abstract (.pdf)

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Young Scholar Presentation: Nutritional value of rice coproducts fed to pigs

Casas, G. A. and H. H. Stein. 2018. Young Scholar Presentation: Nutritional value of rice coproducts fed to pigs. J. Anim. Sci. 96(Suppl. 2):143 (Abstr.) Link to abstract (.pdf)

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Nutrient composition and digestibility of energy and nutrients in wheat middlings and red dog fed to growing pigs

Casas, G. A., D. A. Rodriguez, and H. H. Stein. 2018. Nutrient composition and digestibility of energy and nutrients in wheat middlings and red dog fed to growing pigs. J. Anim. Sci. 96:215-224. Link to full text

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Effects of different levels of full fat or defatted rice bran on growth performance and carcass quality of pigs

Rice bran is the main coproduct of the production of white rice for human consumption, and is used in livestock diets around the world. Rice bran can be full fat (FFRB), with 14 to 25% fat, or defatted (DFRB), containing 3 to 5% fat.

The type of fat in the diet affects the quality of fat in the pig, because pigs deposit fatty acids in approximately the same proportions as they exist in the diet. A high consumption of unsaturated fat can inhibit the pig's own synthesis of fat, which tends to be more saturated. The amount of unsaturated fatty acids  in fat can be expressed using the iodine value (IV), where high IVs correspond to more unsaturated fat. Increased IV in pig fat can lead to softer bellies, which are less valuable due to reduced shelf life, increased susceptibility to oxidative damage, and reduced belly sliceability.

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Gestating sows have greater digestibility of energy in full fat rice bran and defatted rice bran than growing gilts regardless of level of feed intake

Casas, G. A. and H. H. Stein. 2017. Gestating sows have greater digestibility of energy in full fat rice bran and defatted rice bran than growing gilts regardless of level of feed intake. J. Anim. Sci. 95:3136-3142. Link to full text (.pdf)

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The ileal digestibility of most amino acids is greater in red dog than in wheat middlings when fed to growing pigs

Casas, G. A. and H. H. Stein. 2017. The ileal digestibility of most amino acids is greater in red dog than in wheat middlings when fed to growing pigs. J. Anim. Sci. 95:2718-2725. Link to full text (.pdf)

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Effect of particle size of soy protein concentrate on amino acid digestibility and concentration of metabolizable energy and effects of soy protein concentrate on growth performance of weanling pigs

Casas, G. A., C. Huang, and H. H. Stein. 2017. Effect of particle size of soy protein concentrate on amino acid digestibility and concentration of metabolizable energy and effects of soy protein concentrate on growth performance of weanling pigs. J. Anim. Sci. 95(Suppl. 5):148 (Abstr.) Link to abstract (.pdf)

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Effects of feeding level and physiological stage on digestibility of gross energy and nutrients and concentration of digestible and metabolizable energy in full fat rice bran and defatted rice bran fed to gestating sows and growing gilts

Casas, G. A. and H. H. Stein. 2017. Effects of feeding level and physiological stage on digestibility of gross energy and nutrients and concentration of digestible and metabolizable energy in full fat rice bran and defatted rice bran fed to gestating sows and growing gilts. J. Anim. Sci. 95(Suppl. 5):78 (Abstr.) Link to abstract (.pdf)

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Nutritional value of soy protein concentrate ground to different particle sizes and fed to pigs

Casas, G. A., C. Huang, and H. H. Stein. 2017. Nutritional value of soy protein concentrate ground to different particle sizes and fed to pigs. J. Anim. Sci. 95:827-836. Link to full text (.pdf)

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Digestibility of energy and nutrients in wheat middlings and red dog fed to pigs

Wheat middlings and red dog are two coproducts of the wheat milling process that are used as sources of energy and protein in animal feed. Wheat middlings are granular particles of the wheat endosperm, bran and germ. Red dog consists mainly of the aleurone layer that lies between the bran and the endosperm, along with small particles of bran, germ, and flour. It is often used in extrusion mixtures and as a pellet binder. The composition of wheat middlings varies from mill to mill because of the different conditions under which they are produced.

Wheat and wheat co-products contain more non-starch polysaccharides (NSP) than other grains commonly fed to pigs. Because pigs lack the enzymes needed to digest NSPs, this may affect the digestibility of energy and nutrients. An experiment was conducted to determine the apparent total tract digestibility (ATTD) of gross energy (GE), dry matter (DM), and organic matter (OM), and the concentration of digestible energy (DE) and metabolizable energy (ME) in ten sources of wheat middlings as well as one source of red dog.

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