Typical Soyex feeding rates are 2-3kg (4.5-6.5lbs) per dairy cow per day. Since there's energy remaining in Soyex, (500g (1lb) of oil), it makes for an excellent feed in high producing dairy cow rations.
If you are feeding free or liquid oil, amount fed should be limited to 225g (.5lb) per cow per day. Unsaturated fatty acids can depress fiber digestion and rumen fermentation.
Here are some recommended feeding rates of soybean feed ingredients for comparison:
Soybean Ingredient | Feeding Rate (kg/cow/day) | Feeding Rate (lbs/cow/day) | Feed Limitations |
Roasted soybean, coarse/cracked | 2-3 | 4.4-6.6 |
high oil content |
Soyex (your expeller soymeal) |
2-3 | 4.4-6.6 |
medium oil content |
Soyex+ |
2.5-3.5 | 5.5-7.7 | medium oil content high RUP |
Extruded soybeans | 2 | 4.4 |
medium oil content |
Raw soybeans | 2 | 4.4 | high oil content low RUP higher levels can lower protein digestibility |
Answer adapted from University of Illinois Extenstion. 'Feeding Soyean as an Economic Alternative.' Authors: Mike Hutjens, Extension Dairy Specialist, University of Illinois, Urbana.