Feed intake

Feed preference of weanling pigs fed diets containing extruded corn ground to different particle sizes

Extrusion results in increased digestibility of energy, which is primarily due to increased gelatinization of starch. Because this process improves flavor of cereal grains, it is known that extrusion improves palatability in pig diets. Particle size reduction in cereal grains results in an improved digestibility of nutrients due to increased surface area of grains, which subsequently increases the interaction with digestive enzymes. However, because grinding changes the textural traits of grains, the palatability of feeds is low and thus feed intake of pigs is often reduced.

The feed preference of pigs may be influenced by the characteristics of feed ingredients included in diets, but it is not known if different particle size of extruded corn affects the feed preference of weanling pigs. Therefore, the objective was to test the null hypothesis that there were no effects of reducing particle size of extruded corn on feed preference by weanling pigs.

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The effect of feed intake on amino acid digestibility in growing pigs

Rayadurg, V. and H. H. Stein. 2003. The effect of feed intake on amino acid digestibility in growing pigs. J. Anim. Sci 81(Suppl. 2):72 (Abstr.) Link to abstract (.pdf)

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The effect of feeding level and physiological state on total flow and amino acid composition of endogenous protein in swine

Stein, H. H. 1998. The effect of feeding level and physiological state on total flow and amino acid composition of endogenous protein in swine. In: University of Illinois Swine Research Reports, p. 70. Link to full text (.pdf)

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Effect of feed intake on endogenous losses and amino acid and energy digestibility by growing pigs

Moter, V., and H. H. Stein. 2004. Effect of feed intake on endogenous losses and amino acid and energy digestibility by growing pigs. J. Anim. Sci. 82:3518-3528. Link to full text (.pdf)

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The effect of feeding level and physiological status on total flow and amino acid composition of endogenous protein at the distal ileum in swine

Stein, H. H., N. L. Trottier, C. Bellaver, and R. A. Easter. 1999. The effect of feeding level and physiological status on total flow and amino acid composition of endogenous protein at the distal ileum in swine. J. Anim. Sci. 77:1180-1187. Link to full text (.pdf)