ANSC 3180 Lecture Notes - Lecture 11: Egg Incubation, Altricial, Precocial

• School: University of Guelph
• Department: Animal Science
• Course: ANSC 3180
• Professor: Esther Finegan

Document Summary

Enlarged reproductive organs (testes, ovary and oviduct, uterus, mammary glands) Gravid uterus growth (uterus with fetus growing) Fetal growth = ~80% growth occurs during the last 40% of gestation. Fetal growth = water content decreases, and protein, fat, and mineral content increases. Low fat content of most neonate (~2%), both precocial and altricial species. White-tailed deer (precocial: polage, plumage, sighted, mobile) Daily energy expenditure of pregnant mammals, 2. 7-3. 1 bmr (17-35% higher than non- pregnant) Total daily energy expenditure, by lactating mammals, 4-7 bmr. Milk produced by all mammals, marsupials, and monotremes. Contain igg to provide passive immunity to the neonate. To the fetus both in utero, and from colostrum. Rats and mice (16-20 days), cats, dogs. To the neonate only in colostrum (for as long as intestine is permeable to igs) Hooved mammals, perissodactyls (equid, tapirs, rhinos), and artiodactyls (pigs, hippos, camelids, ruminants) Water, minerals, protein (e. g. casein), fat, cho (lactose in eutherian mammals)