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Transcript of Ruminant System
2/25/12 The Ruminant Digestive System What is The Ruminant System? Mouth/Oral Cavity Esophagus & Liver Stomach The Esophagus is the tube that connects to the reticulum and rumen from the mouth. It only opens when chewing or vomiting. reticulum: Located next to the heart, catches metal and hardware, connects to Esophagus, Rumen, and Omasum, no enzymes secreted
Rumen: Left side of Abdomen, papillae lining, used for storage, soaking, mixing and breaking down, Fermentation. It breaks down fibrous feeds into VFAs
Omasum: Reduces particle size even smaller and absorbs some water Animals that have the Ruminant system are Cattle, sheep, goats, buffalo, bison, deer, elk, moose, and more. There are about 150 species of ruminants which include both domestic and wild species. A ruminant is a mammal that digests plant-based food by softening it within the animal's first compartment of the stomach, principally through bacterial actions, then regurgitating the semi-digested mass, now known as cud, and chewing it again. Teeth: Ruminants, such as sheep and cattle, do not have canine teeth. Ruminants also have no incisors in the upper jaw; they are replaced by a tough dental pad. Ruminants bite with the incisor teeth of the lower jaw against their dental pad to cut grass when grazing. The tongue is a muscular organ. Together with the lips, the tongue helps in prehension of food. After chewing, the tongue forms a bolus of food and pushes it back into the pharynx for swallowing. The tongue has tons of Papillae, its what gives the tongue a rough appearance. Cows use their tongue to reach out a grab things. The Major Salivary glands are parotid, sublingual, and mandibular. Salivary glands produce saliva, which facilitates mastication and swallowing of food. In ruminants, it provides a buffered fluid to neutralize the acidity in the rumen produced as a result of fermentation. They produce amylase, which converts starch into maltose The Liver is a Vital organ found in vertebrates some animals. It has a wide range of functions, including detoxification, protein synthesis, and production of biochemicals necessary for digestion. Abomasum: True stomach that secretes enzymes from walls. Glandular Stomach like monogastric fundic region. Small & Large Intestines/ Pancreas The small intestine is the part of the gastrointestinal tract following the stomach and followed by the large intestine, and is where much of the digestion and absorption of food takes place. It has three structural parts, the Duodenum, Jejunum, and lleum. The Pancreas Completes the job of breaking down protein, carbohydrates, and fats using digestive juices of pancreas combined with juices from the intestines.
Secretes hormones that affect the level of sugar in the blood.
Produces chemicals that neutralize stomach acids that pass from the stomach into the small intestine by using substances in pancreatic juice.
Contains Islets of Langerhans, which are tiny groups of specialized cells that are scattered throughout the organ The large intestine is the last part of the digestive system in vertebrate animals. Its function is to absorb water from the remaining indigestible food matter, and then to pass useless waste material from the body. End.. At the end of the digestive system, were digestive food becomes waste and held in the rectum, the rectum serves as, lets just a say a warehouse. Sooner or later it is then pushed out through the anus.