AVS 101 Lecture Notes - Lecture 21: Candling, Social Order, Yolk

• School: URI
• Department: Animal and Veterinary Science
• Course: AVS 101
• Professor: Anthony Mallilo

Document Summary

Avs 101 lecture 21 poultry and egg production. Us produces 187 million eggs per day. Commercial 100,000 2 million birds. Goal is not to produce as many eggs as possible. Produce with as little production costs as possible. Raised in closed, environmentally controlled houses. Control light cycle: 14-16 hrs light, 8-10 hrs of dark. Feed, water, manure, egg collection: 6-12 birds/cage (8 optimum, us allows more crowing. Mortality rate equal to or lower than floor system. Birds produce for one year then sold. Forced molting (rest period: cut down on food and light (8 hours, lose feathers, grow new ones. Membrane allows passage of gas (air for chicks) Bigger the air cell, less fresh the egg. Chalazae: prevents yolk from sticking to the shell, shock absorber, fresh egg yolk sets high, haugh meter: measures albumen in haugh units. Meat spots - only in brown eggs, pigment, not meat. A: go to processed food (cake mixes, dog food, etc. )