
Standardized ileal digestibility of amino acids in plant protein sources, % (Source: NRC, 2012)
| Soybean meal | DDGS | Canola meal | Sunflower meal | |
| Lys | 89 | 61 | 74 | 78 | 
| Met | 90 | 82 | 85 | 89 | 
| Thr | 85 | 71 | 70 | 77 | 
| Trp | 91 | 71 | 71 | 80 | 
Monogastric Nutrition Laboratory

Standardized ileal digestibility of amino acids in plant protein sources, % (Source: NRC, 2012)
| Soybean meal | DDGS | Canola meal | Sunflower meal | |
| Lys | 89 | 61 | 74 | 78 | 
| Met | 90 | 82 | 85 | 89 | 
| Thr | 85 | 71 | 70 | 77 | 
| Trp | 91 | 71 | 71 | 80 |