Topic 5: Industry Structure Flashcards
Year swine came to the USA
1820
State that was #1 in 1840 for production
2?
3?
TN
KY
OH
1860, who was number 1 producer state wise?
Indiana
Center of pork industry
Cincinnati AKA “Porkopolis”
Due to the waterway (OH River) that allowed easy transport
1870 no. 1?
Illinois
1880 to today no. 1?
Iowa
Center of the pork industry is what city?
Chicago
Year union stockyards closed?
1970
Life Cycle
Birth (farrowing) at about 4.25 lbs when born
Weaned at 14-35 days; 12-20lbs; avg wean day is 21 days
Nursery (nursery/feeder pigs) 7-9 weeks; 40-70 lbs
Growing/finishing 20-26 weeks; 250-280 lbs
What do you do during the grower phase?
Make selection for replacements; breed; and begin gestation and life cycle all over again
Gestate is what time
3 months, 3 weeks, 3 days
Industry structure categories
Farrowing
Isolation (bring in new animals)
Nursery
Growing/finishing
Breeding and gestation
3 ways to spread DZ
1) Direct contact: Between pigs that could be physical contact between infected pig to non infected or susceptible animal
2) Airborne: Susceptible animal comes in contact with pathogen in air
Isolate pigs to different barn
3) Indirect Contact: Susceptible pig comes in contact with a fomite on contaminated surface
Biosecurity All in All Out model (AIAO)
Keeps same pigs together
Pigs often matched by: age; weight; production stage; condition (BCS)
AIAO ideally by site (not practiced unless you have lots of $$)
Reality: Building; room; air space; pen (high dz transmission if sep by pens)
Farrow to finish
All stages of life
Traditional and historic
No change to animal ownership
A lot of work
Expensive
Not used commercially