ANSC 108: Swine
How does swine AI works? - ANS-1. Detection of heat is most important
2. Clean vulva
3. Insert spirette
4. Turn spirette counter-clockwise to lock into cervix to prevent leakage of semen
5. Allow semen to flow into uterus mostly by gravity, with only light additional pressure
6. Once semen is deposited, rotate spirette clockwise to remove
How much do piglets weigh at birth? - ANS-2-3 pounds
How much do piglets weigh at weaning? - ANS-13-15 pounds
How much do pigs weigh after the Nursery stage? - ANS-50-60 pounds
In which swine production stage do pigs stay the longest? - ANS-Finishing stage (6
months)
What are advantages of high-investment production (like confinement barn)? -
ANS-Easily controlled environment, specialization of labor, barns are kept more
sanitary, economies of scale, adopt technologies easier, develop foreign markets
What are advantages of low-investment production (like pasture and hoop)? -
ANS-Small building and equipment cost, reduced fixed costs, more flexibility
What are disadvantages of high-investment production (like confinement barn)? -
ANS-Extremely high initial investment, industry and public perceptions, maintaining
efficient labor force
What are disadvantages of low-investment production (like pasture and hoop)? -
ANS-Control disease/parasites, no environmental control, sanitary concerns, extensive
labor, slow growth
What are Needle Teeth? - ANS-Set of eight very sharp teeth in swine that are usually
cut off one to three day old piglets to prevent injury to other piglets and sow's teats
What are pigs' main source of feed? - ANS-Corn and soybean meal
What are pigs' primary source of protein? - ANS-Soybean meal
, What are some underline problems? - ANS-Inadequate number and poor spacing of
teats and pin, inverted or blunt nipples
What are the 6 steps involved with piglet maintenance? - ANS-Clip teeth, cut naval
cords, drugs (iron), dock tails, ear notches, castration
What are the four processes in Market Hog swine operations? - ANS-Terminal Markets,
Auctions, Sell directly to packers, Marketing chain
What are the four stages of swine production? - ANS-Breeding/Gestation, Farrowing,
Nursery, Grower and Finisher
What are the indications of farrowing? - ANS-Restlessness, swelling of vulva, fullness of
udders, milk letdown, fluid presence from vulva
What are the requirements for piglet care in a farrowing pen? - ANS-Heat
lamp/thermoneutral zone
What are the signs of estrus in a pig? - ANS-Stands to be mounted, rigid stance, erect
ears, swollen vulva, nervous
What are the three types of crossbreeding systems? - ANS-Rotational, Terminal,
Rotaterminal
What are the three types of Swine Operations? - ANS-Farrow-Finish, Grower-Finisher,
Seedstock
What are the top swine producing countries? - ANS-China, European Union, United
States, Brazil, Russia
What are the top swine producing states? - ANS-Iowa, Minnesota, North Carolina,
Illinois, Indiana
What do farrowing pens do? - ANS-Used one week before birthing; house sows during
parturition
What do the left vs right notches in the ears mean? - ANS-Left = individual pig #
Right = litter #
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