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Ruminant Digestive System Student Note Outline 1 Ruminants Ruminant are animals that have four complex stomach structures. This allows them to ___________, which monogastrics ___________digest A few animals with ruminant digestive systems are __________, _____________, and ____________. _________________ are usually ruminant animals. Ruminants eat quickly at first, and break it down later 5/22/2017 2 The Ruminant Stomach Four Compartments: 1st-Rumen 2nd-Reticulum rd 3 -Omasum th 4 -Abomasum 5/22/2017 3 The Digestive Tract The solid part of a ruminants food goes to the ______________ after being swallowed The liquid part of the food goes straight to the _____________ 5/22/2017 4 1st Compartment: Rumen In the rumen, food is broken down by ______________ Feed is forced back into the mouth where they chew their cud 6-8 times a day This is called ________________ 5/22/2017 5 Rumen & Reticulum There is no division between the rumen & reticulum Together the rumen & reticulum make up _____% of the stomach Reticulum Reticulum has a lining with small compartments similar to a honeycomb. Hence its nickname the “______________.” Interacts with the rumen in initiating mixing activity and provides additional storage for fermentation. Also prevents foreign materials from entering the other compartments Omasum Omasum has many folds, often referred to as ______________. Makes up 8% of the stomach Aids in the grinding action of the food Squeezes out ____________ 5/22/2017 8 Abomasum Abomasum: The ____________stomach Corresponds with the stomach of ________________________animals. Feed is mixed with gastric juice Makes up 7% of the stomach Small & Large Intestines From the abomasum, the feed enters the ____________________where nutrients are absorbed in the blood system. From the small intestine, the food passes into the _______________where the water is removed and the feed is prepared for excretion. Review 5/22/2017 Animals that have ruminant digestive systems eat forage rapidly and later regurgitate the feed, known as the _________. The regurgitated food is chewed thoroughly, swallowed and then more feed is regurgitated. This process is continued until all the feed is ________________________. 11 12 5/22/2017 13 5/22/2017
