ANSC 160 Lecture Notes - Lecture 12: Artificial Insemination, Beef Cattle, Gilt-Edged Securities
Document Summary
Reproductive physiology: time for sows to come back into estrus is affected by weaning age. If pigs are 18-21 days old, this will occur app 4-7 days after the weaning period: with all in all out all litters are born within a 7 day period are weaned together and sows are automatically synchronized. Cross-fostering: moving young from their dam and placing them with another female for rearing, can be successful or not. Basic parts of monogastric digestive system: mouth, stomach, small intestine large intestine. Mouth: chewing and grinding of food, moisten food, saliva contains he enzyme amylase, amylase begins the breakdown of starch stomach, continues food particle breakdown, secretion, hydrochloric acid, mucus, pepsin, gastrin. Small intestine three main parts: duodenum, dueodenal cells release enzymes, secretin, pancreozymin, cholecystokinin, they trigger release of enzmes from, pancreas, lipase- hydrolyze fats and glycerides, trypsin- breakdown of proteins and polypeptides, chymotrypsin- breakdown of peptides producing amino.
