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ANSC 108 FINAL EXAM.
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ANSC 108 FINAL EXAM.
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ANSC 108 FINAL EXAMBe able to explain why poultry consumption has increased recently - ANS-Several
production and marketing practices have helped bring about a steady increase in per
capita consumption of broilers over the past several years.
Be able to label parts of a steer - ANS-IN BOOK
Be able to set up the first part of a ration balancing equation - ANS-% CP feed 1 (x) + %
CP feed 2 (y)= lbs CP per day
mcal DE feed 1 (x) + mcal DE feed 2 (y) = mcal DE per day
Be able to trace the path of feed from ingestion to defecation in monogastric (pig) -
ANS-mouth-->esophagus-->stomach-->small intestine (duodenum, jejunum, illeum),
large intestine (cecum, colon, rectum)
Be familiar with and able to label the female reproductive tract - ANS-IN BOOK
Be familiar with antemortem inspection and the classifications - ANS-Look at animals
that live within 24 hours of harvest. Classified as US passed, US suspect or US
condemned
Be familiar with break and spool joints - ANS-A break joint is the joint on fore legs at the
lower end of the meta carpals that will "break" when bentA spool joint is a break joint
after a year +, where the feet on the forelimb are removed
Be familiar with egg quality and know what is the best - ANS-AA - 1/8"A - 3/16"B - No
limit
- size and shape of the yolk
- distinctness of yolk shadow outline
- defects and germ development
Be familiar with factors that affect tenderness - ANS-Breed type, locomotive vs support
muscles, quality grade effects, degree of doneness, age
Be familiar with feed conversion in broilers - ANS-1.9:1
, Be familiar with heat regulation of the testes and the mechanisms for it - ANS-the
temperature of testes should be around 4 degrees Celcius below body temperature.
1. increased temp- sperm cell abnormality and/or death
2. decreased fertility
-scrotum (tunica dartos muscle will contract when temperature falls- skin wrinkles)
-cremaster muscle (temp falls and muscle contracts- pulls testes closer to the body)
-pampiniform plexus (complex network of blood vessels that cool the blood entering the
testes)
Be familiar with muscle score in hogs - ANS-3 = very thick, 2 = moderately thick, 1 =
thin
Be familiar with offal items and which is the most valuable - ANS-Blood, feet and
shanks, hide or pelt (most valuable), viscera, head, liver, heart
Be familiar with PSE - ANS-Pale, soft, exudative - it is unacceptable in quality
Be familiar with regurgitation - ANS-Controlled vomiting to reprocess food in the mouth.
Be familiar with the accessory glands - ANS-contribute to fluid volume of semen
(seminal plasma)
buffers, nutrients, and other substances needed to assure optimum motility and fertility
of semen
1. vesicular glans (seminal vesicles) "knobby appearance" "cluster of grapes" nutrients
and buffering
2. prostate gland
produces thin, watery fluid to cleanse the urethra before ejaculation
urine is highly detrimental to sperm
3. Bulbourethral glands (cowper's glands) account for gel-like portion of semen in boars
helps force semen from urethra at time of ejaculation
Be familiar with the average dressing percentage of lambs and be able to use it to
calculate carcass weight - ANS-52%, Dressing percentage (DP) = (carcass weight/live
weight) x 100
Be familiar with the concept of vertical integration. - ANS-Is the control by a single
management of two or more stages of production. (80% broilers produced by top 10)
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