The stomach is relatively small (10% GIT) with a strong '''cardiac sphincter''' which prevents the animal from [[Vomiting|vomiting]]. The equine stomach is rarely empty, retention time is short and expulsion into the [[Duodenum - Anatomy & Physiology|duodenum]] stops when feeding stops. A 500kg horse can produce 30l of gastric juice in 24 hours. | The stomach is relatively small (10% GIT) with a strong '''cardiac sphincter''' which prevents the animal from [[Vomiting|vomiting]]. The equine stomach is rarely empty, retention time is short and expulsion into the [[Duodenum - Anatomy & Physiology|duodenum]] stops when feeding stops. A 500kg horse can produce 30l of gastric juice in 24 hours. |