SHARING OPTIONS: Feeding 200g to 300g/head/day is typically sufficient to boost colostrum quality where silage quality is quite poor. The level of protein in the diet of the cow for the last few weeks prior to calving will have a huge influence on both the amount and quality of the colostrum the cow produces. While feeding soya for the final two to three weeks prior to calving is a great way to increase the overall protein level of the diet and therefore colostrum quality, there are certain situations where the benefit of feeding soya pre-calving should be questioned.