abomasum. This is the only compartment (also called the true stomach) with a glandular lining. Hydrochloric acid and digestive enzymes, needed for the breakdown of feeds, are secreted into the abomasum. The abomasum is comparable to the stomach of the non-ruminant
The main function of the abomasum is to digest protein from both feed and ruminal microbes. Gastric juices, produced in abomasum, accomplish this. The pH value in this part of the digestive system is 2–3.