ADSC 3600 Lecture Notes - Lecture 7: Dry Ice, Weaning, Birth Weight

• School: University of Georgia
• Department: Animal and Dairy Sciences
• Course: ADSC 3600
• Professor: Wilcox

Document Summary

Dry ice and liquid nitrogen can be used to freeze brand cattle. We used dry ice in lab though since it"s a little safer: used: dry ice and alcohol, hold for 40-45 seconds; if cow moves and you come off, add 5 seconds for every time it comes off. With epd, we"re looking at phenotype and estimate the genotype with the epd. Everything is based on a contemporary group (aka a group of animals raised together: same sex, same herd, same year) (on quiz) It"s a forecast of what you will get: more information better forecast, you can take the epd of the cow and the bull, divide by two, and then you get the pedigree of the calf. You make an equation for every animal in the breeds: ga herd (sire a calves) vs tx herd (sire c calves) sire b calves. Weaning weight (direct: bull a (50+) and bull b (40+) = difference is (+10)