Evaluation of Specialty Soybean Products and Organic Acids to Alter Nursery Dietary Acid-Binding Capacity-4 on Pig Performance and Fecal Dry Matter

Authors

Ethan B. Stas, Kansas State University, ManhattanFollow
Mike D. Tokach, Kansas State University, ManhattanFollow
Jason C. Woodworth, Kansas State University, ManhattanFollow
Joel M. DeRouchey, Kansas State University, ManhattanFollow
Robert D. Goodband, Kansas State University, ManhattanFollow
Jordan T. Gebhardt, Kansas State University, ManhattanFollow

Keywords

acid-binding capacity-4, specialty soy protein sources, nursery pig

Abstract

A total of 300 pigs (241 × 600, DNA; initially 12.4 lb) were used to evaluate specialty soybean products and organic acids to alter the acid-binding capacity-4 (ABC-4) level of the diet on nursery pig performance and fecal dry matter (DM). At weaning, pigs were allotted to 1 of 6 dietary treatments. Diet 1 was formulated with 12.0% specialty soy protein concentrate (AX3 Digest; Protekta; Plainfield, IN), 1.06% citric acid, and 0.5% fumaric acid to achieve an ABC-4 of 223 meq/kg. Diets 2 and 3 were the same as diet 1 except citric and fumaric acid were reduced by 50 and 100% to achieve an ABC-4 of 280 or 338 meq/kg, respectively. Diets 4 and 5 were formulated with 50 and 100% replacement of specialty soy protein concentrate with enzymatically treated soybean meal (HP 300; Hamlet Protein; Findlay, OH) on a SID Lys basis with 1.06% citric acid and 0.5% fumaric acid to achieve 280 and 338 meq/kg, respectively. Diet 6 was a positive control with the same formulation as diet 5 except for the addition of 2,500 ppm of Zn from ZnO to achieve a diet ABC-4 of 410 meq/kg. The dietary treatment structure facilitated the comparison of an increase in the ABC-4 level (223 to 338 meq/kg), and the method achieve the change (decreasing acidifier vs. specialty soy protein concentrate replacement diets) as well as their interactions. Pigs were fed the experimental diet for 24 d postweaning (d 0 to 24) followed by a common diet for an additional 18 d. There were no significant (P>0.05) ABC-4 method × level interactions through the duration of the study. From d 0 to 10, pigs fed increasing ABC-4 had poorer (linear,P= 0.046) F/G. Pigs fed the decreasing acidifier diets had increased (P= 0.038) fecal percentage DM on d 17 than pigs fed the soy source replacement diets. During the experimental period (d 0 to 24), pigs fed the diet with ZnO had improved (P<0.05) BW, ADG, ADFI, and F/G compared to pigs fed diets without ZnO. In summary, ZnO was able to improve nursery pig performance when experimental diets were fed. Increasing the ABC-4 level and the method to do so had minimal effects on nursery pig performance. However, further investigation is warranted to determine if a lower ABC-4 level would provide more benefit.

Recommended Citation

Stas, Ethan B.; Tokach, Mike D.; Woodworth, Jason C.; DeRouchey, Joel M.; Goodband, Robert D.; and Gebhardt, Jordan T. (2023) "Evaluation of Specialty Soybean Products and Organic Acids to Alter Nursery Dietary Acid-Binding Capacity-4 on Pig Performance and Fecal Dry Matter," Kansas Agricultural Experiment Station Research Reports: Vol. 9: Iss. 7. https://doi.org/10.4148/2378-5977.8505