Effects of increasing energy or lysine in soybean meal-based diets on early and late finishing pig performance
Animal nutritionEnergyMacronutritional bundleSoy mealSwine
Parent Project:
This is the first year of this project.
Lead Principal Investigator:
Bob Goodband, Kansas State University
Co-Principal Investigators:
Project Code:
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Institution Funded:
Brief Project Summary:
Soybean meal (SBM) has been shown to have positive impacts on finishing pig growth performance. In one USB supported project, (USB 1930-352-0509 Determining the Productive Energy Content of Soybean Meal), we observed that SBM contains greater amounts of net energy (NE) than previously estimated. In our next project (2240-352-0514-L, Maximum allowable soybean meal levels in swine diets), improvements in average daily gain and feed efficiency were observed with increasing amounts of SBM in the diet, even when the SBM energy levels were adjusted. Therefore, we believe the next logical step is to evaluate if this improved performance is due to SBM’s greater energy content or a Lys:Calorie ratio response. We will formulate a negative control diet with low SBM levels and a positive control diet with high SBM levels, both assuming SBM to have NE = 100% of corn. The third and fourth diets will have low SBM levels with SBM assumed to have 78% the NE of corn. The third diet will contain added fat to equal the diet NE in the positive and negative control diets. The fourth dietary treatment will have increased lysine to determine if the lost performance of low SBM diets is because of a lower L
Information And Results
Project Summary

Project Objectives

Project Deliverables

Progress Of Work

Final Project Results

Using caloric efficiency, soybean meal is estimated to contain 94% of the Net Energy of corn based on results of the early finishing study and 125% of the Net Energy of corn based on results of the late finishing study.

Benefit To Soybean Farmers

Results of this study show that soybean meal has more Net Energy than traditional reference book values. This can help increase the value of soybean meal for swine producers. These results help confirm results of previous and current USB projects.

The United Soybean Research Retention policy will display final reports with the project once completed but working files will be purged after three years. And financial information after seven years. All pertinent information is in the final report or if you want more information, please contact the project lead at your state soybean organization or principal investigator listed on the project.