During the second half of the initial phase, the dry starter feed will provide most of the protein. However, starter feed proteins are primarily plant-based, mostly from soy, with a small portion from energy-supplying cereals. Clean protein for newborn calvesThe use of soybean meal (SBM) in protein feed is global and concerns all species at all ages. Figure 3A and Figure 3B give interesting insight on the capacity of rumen then intestine to degrade starter feed protein. Choosing the right proteins in calf starter feed is essential for optimizing rumen fermentation and developing healthy digestive function.