Compare the efficiency of the digestive system. A digestive system is food that passes through the body separating the good part for use and the indigestible part for waste. There are three types of digestive systems, monogastric (carnivorous and omnivorous), hindgut fermenter, and ruminant. Monogastric includes animals such as pigs and dogs. An example of an animal that ferments in the hindgut is a horse, a rabbit, and an example of a ruminant is a cow. Comparison between a carnivore and a hindgut fermenter: The hindgut fermenter has a very similar digestive system to that of the carnivore, but has to digest large amounts of fiber and difficult-to-digest components. The hindgut fermenter is larger than in carnivores. One thing: the dog's small intestine is divided into three parts. The first part is called the duodenum, here the chemical degradation of the chime begins. It is caused by enzymes secreted by the duodenum and pancreas. Bile; which is produced by the dog's liver and stored in the gallbladder; helps break down fats and helps neutralize acid coming from the stomach. The second and third parts of the dog's small intestine are the jejunum and ileum. The surface area of ​​the jejunum and ileum increases due to the circular fold; these are circular folds; which the villi carry. Each of these villi has a capillary and a lymphatic (milky) capillary, which absorbs digested food through rich venous and capillary drainage of the intestine. While the horse's small intestine is the main organ of its digestive system. They are 70 feet long and can hold up to 12 gallons. In their small intestine, pancreatic enzymes help digest food. It will digest starches, it will digest sugars and carbohydrates. It also contains proteases that help emulsify proteins into amino acids. The horse does not have a gallbladder like the dog; this means that bile is constantly flowing into their small intestine. Bile helps break down fats and suspend them in water. The food that has then been digested will be absorbed through the walls of the small intestine and transported through the bloodstream to the small intestine. The horse being a hindgut fermenter means it is a simple single chambered stomach. The horse's stomach is very small compared to the size of the animal, making up only 10% of the capacity of the horse's digestive system. The horse's stomach is small as they tend to eat small amounts every couple of hours, which means they are pickers. In the horse's stomach, food is mixed with pepsin; this is an enzyme that helps break down proteins; hydrochloric acids which will help break down solid particles. There are also bacteria in the horse's stomach that help produce lactic acid. While the cow is a ruminant, which means it has a four-compartment stomach. The cow has 4 stomach chambers called the rumen, reticulum, omasum and abomasum. The cow may also chew its food, this is also known as cull chewing. The rumen is the largest of the four compartments; this compartment is divided into several pockets. It can hold up to 25 liters of water depending on the cow. The rumen serves as a food storage vat; this is due to the size of the rumen. The rumen absorbs volatile fatty acids and some other products whose digestion increases thanks to the good blood supply to the walls of the rumen. The pH value of the rumen is 6-7. The reticulum is a sac-like structure at the front of the cow's body cavity. It is located very close to the heart of the cow. It has a honeycomb appearance. There are no enzymes here