Swine (Exam 2) Flashcards
Where are most commercial pigs located?
North Carolina
Iowa
Minnesota
Where are most feral pigs located?
Texas
California
Why are many larger swine enterprises relocating to remote (low human population density) sites? Where is a common relocation site?
Oklahoma panhandle
Isolated to mitigate odor and dust complaints from humans & achieve isolation from other pig herds to protect against certain infectious diseases
Define: Wild Boars
Male or female members that have never been domesticated
Not present outside captivity in the US
Define: Feral Pigs
Commercial pigs that have escaped/been released from farms to live in the wild
Closest breed to domestic pigs in terms of genetics
Living and feeding conditions represent those of wild boars
Define: Commercial Pigs
Domesticated pigs
Smaller breeds
What are environmental concerns associated with wild boars and feral pigs?
Cause environmental issues = invasive species
Destroy forest, cause erosion through digging, and can displace wildlife
What are infectious disease concerns associated with wild boars and feral pigs?
Means of carrying new infectious agents into commercial swine herds (especially small farms that have outdoor operations)
Identify warm piglets based on body posture and behavior
Not piled on each other, but close
Identify chilled piglets based on body posture and behavior
Piled on top of each other, lethargy, back hunched, dirty, shivering
Difficulty walking, limping, or getting traction to start walking
Patchy hair loss, hair standing on end
Describe all-in-all-out facility management
Common practice in most swine herds
Pigs of a given age brought into unit at same time, filled to capacity (all in)
When pigs complete this stage, entire facility is emptied (all out
Empty facility is steam-cleaned, disinfected, and dried before new group of pigs brought in
What is the goal of all-in-all-out management?
Greatly reduce role of environment as a reservoir for pathogenic infectious agents on pig farms
What is the trend of housing in the swine industry?
Trend towards large, confined pool of pigs which creates new challenges for infection control
What do modern swine operations look like?
Pigs housed in enclosed building for protection from health, predators, and separated by age to limit disease spread (ALL IN ALL OUT)
What is an SPF operation?
Threat of new infections promoted development of specialized and strict biosecutiry/disease control guidelines for specific herds that wish to achieve particular high degree of biosafety status
Farm has implemented very strict biosecurity practices for several years - facility and personnel isolation, rodent and bird control, disease monitoring, maintenance of closed herds
What are SPF pigs used for?
Test documentation that pigs on site do not harbor specific infectious disease agents (e.g. respiratory pathogens, swine dysentery)
Pigs desirable as new stock for new farms, breeding stock for farms with specific disease control measures in place, or farms that have depopulated because of infectious disease outbreaks
What are the 4 biggest food safety issues for the swine industry?
Salmonella spp.
Campylobacter spp.
E. coli 0157:H7
Trichinella spiralis
*Higher risk with ground products than cut products
*Reduce risk by cooking product until grey inside - no pink
What do gestation crates look like?
Iron cages that allow the sow to lie down and stand up, but not to turn around
Compare gestation crates to pens and free stalls (nutrition)
GC & FS: tailor feed to each sow without dominant sows stealing food from submissive ones
Compare gestation crates to pens and free stalls (safety)
GC & FS: prevent fighting among sows
Pens: sows normally don’t congregate in larger groups in nature and co-mingling of large numbers of sows in pens = serious bite wounds
Compare gestation crates to pens and free stalls (welfare)
GC: not great, resulting in changes in pork industry due to consumer concerns
FS/Pens: better because they can walk around
FS: channels to walk around, gated area to eat, tag reader feeds appropriate amount, individual stalls to rest in (70%)
What is the consequence of co-mingling all sows?
Behavioral traits cause harm
Naturally dont congregate - submissive sow typically vacates if dominant one is around = minimize fighting
Severe biting
What is a farrowing crate, when is it used?
1 week before birth, moved to these crates = metal cage within a pen
Prevents the sow from laying down on piglets = designed to protect piglets from crushing
Piglets free to move in creep area that surrounds the farrowing crate
Why are farrowing crates safer for piglets than open stalls (pigstys)?
Prevents crushing of piglets