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Effect of Supplemental Choline on Performance of Starting, Growing and Finishing Pigs: A Cooperative Regional Study

Abstract

Severn hundred pigs were used in experiments at eight stations to evaluate the efficacy of supplemental dietary choline during the starting, growing and finishing production phases. Increasing levels of choline chloride were added to corn-soy-lysine basal diets formulated to contain 15% crude protein (.95% lysine), 13% crude protein, (.75% lysine) and 11% crude protein (.55% lysine) for the starting, growing and finishing production phases, respectively. The addition of choline did not produce a growth response during any stage of production. Likewise, feed to gain ratios did not differ although there was a trend for choline supplementation to impair feed conversion during the growing phase. It is concluded that added choline has no beneficial effect on performance in corn-soy-lysine diets fed to pigs.

¹ The Committee during the course of this study included: L. T. Frobish, ARS; H. S. Teague, ARS: R. A. Easter, IL; T. R. Cline, IN; V. C. Speer, IA; G. L. Allee, KS; G. L. Cromwell, KY; E. R. Miller, MI; R. J. Meade, MN; T. L. Veum, MO; E. R. Peo, Jr., NE; R. L. Harrold, ND; D. C. Mahan, OH; R. C. Wahlstrom, SD; L. F. Tribble, Texas Tech; R. H. Grummer, WI, and J. A. Hoefer, MI and F. E. Regnier, IN, Administrative Advisors. Manuscript prepared by T. R. Cline.

² Appreciation is expressed to Mr. J. T. Craig, Veterinary Products Division, IMC Chemical Group Inc., Terre Haute, IN, for supplying the choline chloride.

³ Journal Paper No. 7697, Purdue Univ, Agr. Exp. Sta.

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