ANSC 160 Lecture Notes - Lecture 2: Gastrointestinal Tract, Short-Chain Fatty Acid, Xenotransplantation
Document Summary
Swine: similar to a human, relatively small, single compartment, cannot handle large volumes of bulky forages, depend primarily on concentrated grains and similar feeds. Poultry: relatively simple, different from pigs, no teeth, gizzard, two ceca, common chamber for reproductive tract discharges (cloaca) Ruminants: cattle, sheep, goats, designed for forage utilization, four compartment stomach designed to accommodate bulky feeds (grass, hay) Rumen: largest of ruminant forestomach, contains microorganisms that breakdown complex carbohydrates, produce volatile fatty acids (vfa), amino acids and vitamins for the host animal to use. Horses: simple stomach, not a ruminant but utilizes bulky feeds, have a large well developed cecum. Animal products provide 17. 1% of total calories in the world. Animal products provide 24% of the total calories in the usa. Animal products provide 38. 5% of protein consumed in the world. Animal products provide 63% of protein consumed in the usa: meat 54, milk 32, fish 6, eggs 7%
