Evaluation of How Nursery Pig Performance is Affected by Fermented Corn Protein as a Replacement to Enzymatically Treated Soybean Meal Along With High or Low Branch Chain Amino Acid to Leucine Ratios

Authors

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

Keywords

nursery pig, fermented corn protein, enzymatically treated soybean meal, branch chain amino acids

Abstract

Two experiments were conducted to determine if fermented corn protein can serve as a replacement to enzymatically treated soybean meal and what the effects may be with high or low branch chain amino acids (BCAA):Leu ratios on nursery pig performance. In Exp. 1, a total of 350 barrows (200 × 400, DNA; initially 13.2 lb) were randomly allotted to 1 of 5 treatments with 5 pigs per pen and 14 replications per treatment. Dietary treatments were arranged in a 2 × 2 + 1 factorial with a control diet or diets with 5 or 10% fermented corn protein or enzymatically treated soybean meal. Pigs were fed phase 1 diets for 10 d followed by phase 2 diets for 21 d. There were no interactions observed throughout the experiment. Overall (d 0 to 31), pigs fed increasing levels of fermented corn protein had decreased (linear,P≤ 0.026) BW, ADG, and ADFI with no differences in F/G, whereas increasing enzymatically treated soybean meal had no effect on growth performance. Pigs fed enzymatically treated soybean meal had improved (P≤ 0.034) BW, ADG, and F/G compared to pigs fed fermented corn protein diets, with no effect on ADFI.

In Exp. 2, a total of 350 pigs (241 × 600, DNA; initially 26.7 lb) were used to determine the effects of fermented corn protein with high or low BCAA:Leu ratio on nursery pig growth performance. At weaning, pigs were randomly assigned to pens (5 pigs per pen). On d 24 after weaning (d 0 of the trial), pens of pigs were weighed and then allotted to treatment. Pigs were assigned to 1 of 5 dietary treatments with 14 replications per treatment. Dietary treatments were arranged in a 2 × 2 + 1 factorial. Diets consisted of 10 or 20% fermented corn protein either with high or low BCAA:Leu in addition to a control diet. There was no interaction observed between fermented corn protein concentration and BCAA:Leu. Overall (d 0 to 21), BW, ADG, ADFI, and F/G worsened (linear,P<0.001) as fermented corn protein increased in the diet. High BCAA:Leu improved (P= 0.023) F/G compared to low BCAA:Leu with no effect on BW, ADG, and ADFI. In summary, using fermented corn protein to replace enzymatically treated soybean meal in phase 1 and 2 diets of nursery pigs diminished growth performance. Increasing concentrations of fermented corn protein in phase 3 worsened growth performance and increasing BCAA:Leu only improved the feed efficiency.

Recommended Citation

Stas, Ethan B.; Chance, Jenna A.; Goodband, Robert D.; Tokach, Mike D.; Woodworth, Jason C.; DeRouchey, Joel M.; and Gebhardt, Jordan T. (2021) "Evaluation of How Nursery Pig Performance is Affected by Fermented Corn Protein as a Replacement to Enzymatically Treated Soybean Meal Along With High or Low Branch Chain Amino Acid to Leucine Ratios," Kansas Agricultural Experiment Station Research Reports: Vol. 7: Iss. 11. https://doi.org/10.4148/2378-5977.8194