Sheep intestine Sheep Intestine can be converted to many valuable products. Once cleaned, the intestines can be used as natural casings for foods such as sausages and frankfurters. This type of casing provides an economical and safe packing material for these popular foods. A high value by-product of the intestines are instrument strings. Though labor intensive, this product can be sold at a high price. Sheep intestines provide a critical product for the veterinary field. Once processed, the intestines are made into suture material. By using natural sutures from sheep, veterinarians avoid complications such as immune responses, which arise from synthetic sutures. Also, these sutures are less invasive because the body reabsorbs them over time.