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ANSC 1401 Exam #4 Questions & Correct Answers | Latest Update |Already Graded A+
Question : reproductive efficiency
Correct answer: the number of live offspring born in a given
period
Question : what is the importance of reproductive efficiency?
Correct answer: profitability (the more young born, the more
you have to sell and the more income you have)
Question : what is the effect on maintenance of reproductive
efficiency?
Correct answer: more offspring lessens the cost/unit
(offspring reduce our overhead costs per animal)
Question : what is the effect on the selection progress of
reproductive efficiency?
Correct answer: more offspring is greater opportunity for
genetic improvement (if more young to select herd replacements, we apply more selection pressure to the traits used)
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Question : what are the factors influencing reproductive
efficiency?
Correct answer: physiology of the animal, genetic potential,
nutrition, season of the year, other environmental factors
Question : factor influencing reproductive efficiency: physiology of the animal
Correct answer: hormone levels
Question : factor influencing reproductive efficiency: genetic potential
Correct answer: (for reproduction) select genetic capability
animals
Question : factor influencing reproductive efficiency: nutrition
Correct answer: (of the sire and dam) not too fat or too thin
(males produce more sperm on moderate nutrition), flushing
Question : factor influencing reproductive efficiency: season of the year
Correct answer: cattle-sheep-horses-pigs-chickens
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Question : factor influencing reproductive efficiency: other environmental factors
Correct answer: heat at 105°F, humidity → negative; cold-
animals are pretty adapted
Question : male reproductive organ: testis (testes)
Correct answer: primary sex organ of the male
Question : male reproductive organ function: gamete (sperm)
Correct answer: within the testicle, sperm are produced by the
seminiferous tubules (continue to produce sperm throughout)
Question : male reproductive organ function: endocrine
Correct answer: within the testicle, testosterone is produced
by the interstitial cells (in between seminiferous tubules)
Question : male reproductive organ: epididymis
Correct answer: long tube attached to the side of the testicle
that functions as an area for sperm maturation and storage (undergo chemical process to make fertile)
Question : male reproductive organ: vas deferens
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Correct answer: a tube that transports sperm from the
epididymis to the urethra
Question : male reproductive organ function: vasectomy
Correct answer: a portion of the vas deferent is removed
Question : male reproductive organ: ampulla
Correct answer: in animals that ejaculate rapidly (bull,
stallion, ram and buck), a reservoir is found at the point where the vas deferent joins the urethra
Question : male reproductive organ function: no ampulla
Correct answer: animals that ejaculate slowly (such as a boar
and a dog) have...
Question : male reproductive organs: accessory sex glands
Correct answer: adding to sperm calls such as nutrients,
enzymes and fluid to live longer or have more action
Question : male reproductive organ: uretha
Correct answer: large muscular canal extending from the
bladder through the full length of the penis serving as a passageway for sperm and urine