CORRECT ANSWERS
How many different segregation can heterogeneous ✅✅correct answ-4 different
Multi-genetic traits ✅✅correct answ-Traits controlled by multiple genes
Breeding value ✅✅correct answ-Sum of all individual genetic effects
Non-additive value ✅✅correct answ-Particular combination of genes
How often to record animals produce record offspring ✅✅correct answ-Almost never
What can pigs be used for ✅✅correct answ-Companion animals, entertainment, transportation,
or food
Genes flow ________ from one another ✅✅correct answ-Independently
Gene ✅✅correct answ-Unit of heredity that transfers from parents to offspring
Locu ✅✅correct answ-Location on chromosomes that a gene resides
Allele ✅✅correct answ-One of two or more alternative forms of a gene that can be found at a
single location (version)
How many litters can a pig have per year ✅✅correct answ-2.5 litter/ year
Swines eat large amounts of __________ ✅✅correct answ-Grain & roughage
What is the term for multiple births per farrowing ✅✅correct answ-Multiparous
,What is the purpose of feed stock producer ✅✅correct answ-Focused on producing elite
commercial costumers
T/F: Commercial producers are focused on producing terminally oriented animal to fit a system?
✅✅correct answ-True
What are the two types of confinement and which is more popular? ✅✅correct answ-Total and
partial. Total is becoming more popular
Why is total confinement more popular? ✅✅correct answ-Better bio-security, better health,
better efficiency, decrease environmental destruction.
Duroc ✅✅correct answ-Various shades of red, lop ears, terminal breed, come from berkshire
Chester white ✅✅correct answ-White, floppy ears
Berkshire ✅✅correct answ-Black with white legs, tails, and nose, erect ears
Hampshire ✅✅correct answ-Black with white belt, erect ears, terminal breed
Landrace ✅✅correct answ-White, large flop ears, very prolific, ears can cause blindness
Poland china ✅✅correct answ-Descended from Berkshire, black with six white parts, lop ears
Spots ✅✅correct answ-Black & white, efficient gains
Yorkshire ✅✅correct answ-White, erect ears
Pietrain ✅✅correct answ-Spots, erect ears, and muscles
Tamworth ✅✅correct answ-Red, erect ears, heritable breed
, Meishan ✅✅correct answ-Most prolific breed, fat
What heritable traits benefit from cross breed? ✅✅correct answ-Lowly heritable
Why crossbreed? ✅✅correct answ-To capitalize on hybrid vigor & combine desirable traits from
different breeds.
Heterosis (H.V.). Define and give formula ✅✅correct answ-Superiority of crossbred offspring
compared to avg of parents. H.V= ((F1-Pavg)/Pavg)
Rotational cross vs terminal cross ✅✅correct answ-Rotational cross= generally use offspring to
replace current pigs in use
Terminal cross= all progeny are marketed
What coat colors are dominate? ✅✅correct answ-White> black & red, black >red
What color is produced when black and white are mixed? ✅✅correct answ-Roan, white with
black spots
Types of performance data ✅✅correct answ-Sow productivity index (SPI)= # of offspring
Growth rate (ADG) = days given weight
Feed efficiency = how well feed is converted to gain
Loin eye are
Genetic data
Performance vs progeny testing ✅✅correct answ-Performance testing= data on individuals that
you plan to use
Progeny testing= data on the offspring of boar/gilt of interest
Name three types of waste management ✅✅correct answ-Gutter flush, manure pit, and
mechanical scrapper