Replacing Soybean Meal with Soy Protein Concentrate in Diets Containing 12% Crude Protein Does Not Maintain Performance in Finishing Pigs from 240 to 280 lb

Authors

J. A. Soto, Kansas State University, ManhattanFollow
M. D. Tokach, Kansas State University, ManhattanFollow
S. S. Dritz, Kansas State University, ManhattanFollow
J. C. Woodworth, Kansas State University, ManhattanFollow
J. M. DeRouchey, Kansas State University, ManhattanFollow
R. D. Goodband, Kansas State University, ManhattanFollow

Keywords

soybean meal, crude protein, finishing pigs

Abstract

A total of 252 pigs (DNA 600 × 241, initially 238.8 lb) were used in a 21-d trial to determine the effects of replacing soybean meal (SBM) with soy protein concentrate (SPC) in diets containing 12% crude protein (CP) on growth performance of finishing pigs from 240 to 280 lb. Pens of 7 or 8 pigs were allotted by body weight (BW) and randomly assigned to 1 of 4 dietary treatments with 8 replications per treatment. Treatments consisted of 3 levels of SBM (10.6, 5.3, and 0%) with 12% CP and a negative control treatment with 4.0% SBM and 10% CP. Soy protein concentrate was increased as SBM decreased to maintain 12% CP. For overall growth performance, decreasing SBM marginally decreased (linear,P= 0.062) average daily gain (ADG) and worsened (linear,P= 0.061) feed efficiency (F/G). In conclusion, regardless of the 12% CP level, reducing the concentration of SBM and replacing it with SPC worsened ADG and F/G.

Recommended Citation

Soto, J. A.; Tokach, M. D.; Dritz, S. S.; Woodworth, J. C.; DeRouchey, J. M.; and Goodband, R. D. (2018) "Replacing Soybean Meal with Soy Protein Concentrate in Diets Containing 12% Crude Protein Does Not Maintain Performance in Finishing Pigs from 240 to 280 lb," Kansas Agricultural Experiment Station Research Reports: Vol. 4: Iss. 9. https://doi.org/10.4148/2378-5977.7683