As seen in Table 1, SoyPass has now higher degradation rates of crude protein (kdCP) and NDF (kdNDF) while the other three have the same values for iCP, kdCP, iNDF and kdNDF. Decorticated soybean meal usually has higher crude protein and lower NDF. The CP content varies with the origin.
For Swedish conditions, the soybean meal to be used has a new feed code: 18-33. It is the soybean meal from the company Denofa, which guarantees that the product is non-GM. The old code for common soybean meal is still in the feedstuff table (feed code 2-53) and depending on the origin, the crude protein content may vary a lot, e.g. the soybean meal from Eastern Europe has often lower crude protein. The most common soybean meal used in Denmark is decorticated (feed code 2-54) that has higher content of crude protein and lower NDF. Processed soybean meal, so-called SoyPass (feed code 18-9), has a lower proportion of soluble crude protein and lower degradation rate of crude protein and NDF compared to the common soybean meal.