POPM 4230 Lecture Notes - Lecture 1: Classless Inter-Domain Routing, Ampicillin, Retained Placenta

• School: University of Guelph
• Department: Population Medicine
• Course: POPM 4230
• Professor: Terri O' Sullivan

Document Summary

~ pregnancy rate used to be 14%, good farms are 20% or higher. Transition = 4 wks on either side of calving. ~ diseases will effect how cow displays heat. Open = not pregnant (~ can only manipulate time btw open and pregnant) Period of pregnancy = fixed = 281 days (~9 months) Most of milk produced is in the first ~120 days of lactation (~150 days of lactation total) Early embryonic death = typically w. in 1st 40 days of pregnancy: intensity, accuracy, systematic breeding. True anestrus: nutritional/ endocrine lack of lh surge, bcs. Inhospitable uterus: endometritis, heat stress, trichomonas, campylobacter, nutritional/ endocrine lack of p4, failed recognition of pregnancy, genetic/ developmental anomalies, heat stress, mastitis, bvd. Stillbirth: fetal- maternal malproportion, fetal posture, incorrect assisted delivery. Abortion: neospora, bvd, ibr, mycotic, leptospirosis, salmonellosis, iatrogenic, listeriosis, ureaplasma, toxic. Bcs (~ loss of body weight might impair cycle) ~ inflammation w. interfere w. success of pregnancy.