POUL 4060 Lecture Notes - Lecture 19: Antibody, Ovulation, Riboflavin

• School: University of Georgia
• Department: Poultry Science
• Course: POUL 4060
• Professor: Davis

Document Summary

If bacteria make it to the yolk, they will eat all the nutrients in the yolk and produce gas, making the egg explode, no embryo, no offspring. Non-hierarchical white follicles have a high water % and low lipid %. In large preovulatory follicles, they have 45% water component and 37% lipid component. Protein evenly splits between the yolk and albumen whereas lipid is all concentrated in the yolk. Proteins and lipids for growth: color: carotenoids antioxidants, maternal antibodies. The more cells you have/developed, the lower survivability rate of embryo. Yolk is formed in the liver and transported to the developing follicle. Color of egg yolk: most birds are diurnal, at night, yolk synthesis is continued. Yolk membranes: 4 layers- 2 from ovary, 2 from oviduct, vitellin membrane or oolemma (8 nm, 10-9)- innermost layer, classical phospholipid bilayer, added before ovulation. Ipvl (4mm, 10-6)- loose intermeshed network of fibers- zp proteins.