Past Quizzes (Swine) Flashcards
define the term: gilt
a female pig who has never given birth
define the term: sow
a female pig who has given birth
define the term: barrow
a male pig who is castrated
select one external anatomical part of the pig and describe a notable feature of your selection.
the tail – typically docked because there are no nerves on he end and other pigs will nibble on it
T/F: pigs are fatter today than they were 50 years ago
false
T/F: pigs can be used as biomedical models to explore various human diseases
true
Which state has the highest total pig inventory?
Iowa
define the term: farrow-to-finish
from the time the pig is born to slaughter
define the term: SEW
Segregated Early Wean – the pigs are weaned early and may need supplemental diet
A _________ is considered a terminal breed with a red body and lop ears
duroc
A ____________ producer is focused on producing a terminally oriented animal while a _____________ producer focuses on producing elite breeding stock
commercial, seedstock
What country is the world’s leading producer of pork?
China
provide one benefit for confinement housing and one benefit for outdoor housing.
confinement – biosecurity
outdoor – nice market
T/F: Missouri is in the top 10 producing states by pig inventory
true
diagram a three breed terminal cross
A(maternal)+B(maternal)=AB(female) + C(terminal sire boar) = market animals
Crossbreeding allows producers to capitalize on ____________, creating offspring that are better than the average of the two parents for the desired trait.
heterosis
A ___________ will show more obvious physical signs of estrus such as reddening of the vulva, but a __________ is more distinct when displaying estrus behavior like locking up when in standing heat.
gilt, sow
Which will reach sexual maturity at a younger age – a gilt or a boar?
gilt 5-8 months
(—> a boar is 7-9 months)
Reproductive traits are described as a (highly/lowly) heritable trait while carcass traits are (highly/lowly) heritable traits
lowly, highly
T/F: when a gilt’s reproductive tract is underdeveloped, the vulva tends to be much larger than that on a gilt with a fully developed reproductive tract
false
T/F: exposing gilts to a boar can help the gilt reach puberty sooner
true
provide the equation for heterosis
H.V. = ((F-Pavg)/Pavg) x 100
define the term: farrowing crate
a housing unit/stall where a sow is taken to give birth and raise her piglets for about 3 weeks
define the term: gestation stall
a housing unit/stall where gilts and sows are housed while pregnant / after insemination
In what anatomical reproductive structure does the boar ejaculate in when breeding a sow or gilt?
the uterus – intrauterine insemination
What breeding method is used most in the swine industry?
artificial insemination
what are two parameters we evaluate when performing semen evaluation?
volume and concentration
other ex: motility and morphology
provide one procedure we perform when processing piglets
ear notching
other ex: iron injection, teeth clipping, tail docking, castration
When piglets are weaned they go to the ____________.
nursery
Pigs have a ____________ gestation length.
114 day
T/F: The boar has the greatest amount of total ejaculate volume compared to other livestock species
true
