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50 Cards in this Set
- Front
- Back
The degree to which the crossbred offspring out performs its purebred parents is:
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hybrid vigor
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An animal that has extremely straight hind legs is best described as being:
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post-legged
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A method of animal identification that uses very low temperature to change pigment color of the skin is:
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freeze brand
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The gestation time for cattle is:
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283 days
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Which trait has the highest heritability estimate in cattle?
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post weaning rate of gain
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The average age of puberty in sheep is:
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6 months
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A cattle producer that produces breeding stock including bulls and females for cow-calf operations is commonly called a:
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seedstock/purebreed breeder
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The most important factor when formulating a ration for livestock is:
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total digestive nutrients
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The gestation time for sheep is:
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148 days
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Heifers most commonly reach puberty at the average age of:
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7 months
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Estrus in cattle usually occurs every:
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21 days
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EPD stands for:
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expected progeny difference
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A market where cattle are sold by public bidding, with the animals going to the highest bidder is known as a(n):
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auction
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In swine, a male that has been castrated before reaching sexual maturity is called a:
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barrow
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A system that is used for trading contracts for future delivery of cattle is known as:
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futures market
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In 1985, a one dollar per head checkoff for every head of beef sold in the United States
was established as a result of the passage of the: |
Beef Promotion and Research Act
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The process of placing sperm in the female reproductive tract by some other means than natural mating is known as:
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artificial insemination
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The process of preparing calves for the stress of being moved into the feedlot is called:
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preconditioning
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The rate or percentage of animals becoming pregnant.
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conception rate
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The removal of all or part of the tail from sheep is referred to as:
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docking
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A method of animal identification that is a puncture in the skin of numbers or letters is
known as: |
tattoo
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A selective form of breeding in which the sire and dam are related which some refer to as
a mild form of inbreeding is called: |
linebreeding
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The average daily gain for growing cattle on full feed.
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3 lb/per day
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Which of the following traits is considered undesirable when judging market lambs?
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early maturing
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Cattle are in a class of animals which consume only plant products known as:
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herbivores
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The gestation time for swine is:
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114 days
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When evaluating swine performance data, litter weights are adjusted to a standard of how
many days? |
21 days
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The most common swine identification system is:
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ear notching
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The mating of animals of different family lines within the same breed is:
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outcrossing
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The testes produce sperm cells and the male sex hormone:
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testosterone
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The age at which an animal reaches sexual maturity is:
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puberty
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The length of the estrus cycle for a ewe is:
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14-20 days
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The estrus cycle in swine occurs:
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every 21 days
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The process of taking food nutrients through the intestinal wall is:
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absorption
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The reflex and response that an animal has at birth is:
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instinct
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The normal body temperature of sheep and swine is:
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Above 102 degrees F
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Sheep and cattle both have multiple stomachs referred to as a(n):
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ruminant
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The growth and development of animals prior to birth.
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prenatal
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A permanent change in the genotype of an offspring from that of its parents.
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mutation
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An impairment that affects the performance of the vital life functions.
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disease
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The most common sheep identification system is:
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ear tags
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What hormone is produced primarily by the ovaries in female animals?
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estrogen
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Cattle have how many pairs of chromosomes?
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30
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The use of living organisms or their products (livestock production) is also known as:
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biotechnology
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External fat on a lamb carcass is measured between which two ribs?
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12 & 13
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The tube that carries air to an animal’s lungs.
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trachea
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The use of liquid nitrogen for storage of semen and embryos.
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cryopreservation
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The expected yield of a hog with a USDA quality grade of No. 1 is:
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60.4% or greater
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The most important wholesale cut of lamb is:
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leg
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The age of the beef animal and the amount of marbling in the carcass affect the
________ of the carcass. |
quality grade
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