Effects of increasing crystalline amino acids in sorghum- or corn-based diets on nursery pig growth performance
| Autor: | Márcio A D Gonçalves, Steven S. Dritz, J.E. Nemechek, Kyle E. Jordan, Michael D. Tokach, Jason C Woodworth, Joel M. DeRouchey, Robert D. Goodband |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
chemistry.chemical_classification
Methionine biology Computer Networks and Communications Soybean meal Lysine Fortification Sorghum biology.organism_classification Feed conversion ratio Amino acid chemistry.chemical_compound chemistry Agronomy Hardware and Architecture Food science Threonine Software |
| Zdroj: | Kansas Agricultural Experiment Station Research Reports. :77-82 |
| ISSN: | 2378-5977 |
| Popis: | A total of 300 pigs (PIC 1050; initially 23.3 lb BW) were used in a 21-d study to compare the effects of increasing crystalline amino acids in sorghumand corn-based diets on nursery pig growth performance. Treatments with 5 pigs per pen and 10 pens per treatment were arranged in a 2 × 3 factorial with main effects of grain source (sorghum vs. corn) and crystalline amino acid supplementation (low, medium, or high). Amino acid ratios to lysine as well as standardized ileal digestibility coefficients used were set by NRC (20123). Because replacing increasing amounts of soybean meal with crystalline amino acids changes the NE of the diet, all diets were formulated to the same Lys:NE ratio. The lysine concentration in the diets was formulated at 95% of the pig’s estimated requirement to ensure that the other amino acids, on a ratio to lysine, would not be underestimated. The grain sources and soybean meal were analyzed for amino acid profile and diets formulated from these concentrations. The low amino acid fortification contained L-lysine HCl and DL-methionine. The medium amino acid fortification contained L-lysine HCl, DL-methionine, and L-threonine, and the high amino acid fortification contained L-lysine HCl, DL-methionine, L-threonine, and L-valine. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|