How much soybean meal should I feed to a 10 year old quarter horse daily?
Soybean meal is considered to be a high quality protein source. To accurately determine how much soybean meal to feed to your horse, other factors such as current feeding program, activity level and workload should first be evaluated to ensure the horse's nutritional requirements are being met. This will help to determine if additional protein supplementation is warranted.
Below are a few additional resources on dietary protein requirements for horses that may be of interest.