ANSC 1401 EXAM 4 Study Guide
Questions with All Solved Solutions
2026-2027 Updated.
reproductive efficiency - Answer the number of live offspring born in a given period
profitability (the more young born, the more you have to sell and the more income you have) -
Answer what is the importance of reproductive efficiency?
more offspring lessens the cost/unit (offspring reduce our overhead costs per animal) - Answer
what is the effect on maintenance of reproductive efficiency?
more offspring is greater opportunity for genetic improvement (if more young to select herd
replacements, we apply more selection pressure to the traits used) - Answer what is the effect
on the selection progress of reproductive efficiency?
physiology of the animal, genetic potential, nutrition, season of the year, other environmental
factors - Answer what are the factors influencing reproductive efficiency?
physiology of the animal - Answer factor influencing reproductive efficiency:
hormone levels
genetic potential - Answer factor influencing reproductive efficiency:
(for reproduction) select genetic capability animals
nutrition - Answer factor influencing reproductive efficiency:
(of the sire and dam) not too fat or too thin (males produce more sperm on moderate
nutrition), flushing
season of the year - Answer factor influencing reproductive efficiency:
cattle-sheep-horses-pigs-chickens
other environmental factors - Answer factor influencing reproductive efficiency:
heat at 105°F, humidity → negative; cold- animals are pretty adapted
testis (testes) - Answer male reproductive organ:
, primary sex organ of the male
gamete (sperm) function - Answer male reproductive organ function:
within the testicle, sperm are produced by the seminiferous tubules (continue to produce sperm
throughout)
endocrine function - Answer male reproductive organ function:
within the testicle, testosterone is produced by the interstitial cells (in between seminiferous
tubules)
epididymis - Answer male reproductive organ:
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)
vas deferens - Answer male reproductive organ:
a tube that transports sperm from the epididymis to the urethra
vasectomy - Answer male reproductive organ function:
a portion of the vas deferent is removed
ampulla - Answer male reproductive organ:
in animals that ejaculate rapidly (bull, stallion, ram and buck), a reservoir is found at the point
where the vas deferent joins the urethra
no ampulla - Answer male reproductive organ function:
animals that ejaculate slowly (such as a boar and a dog) have...
accessory sex glands - Answer male reproductive organs:
adding to sperm calls such as nutrients, enzymes and fluid to live longer or have more action
uretha - Answer male reproductive organ:
large muscular canal extending from the bladder through the full length of the penis serving as
a passageway for sperm and urine
penis - Answer male reproductive organ:
organ of copulation in the male and passageway for urine and semen (through the uretha); 2
types: fibroelastic, vascular
Questions with All Solved Solutions
2026-2027 Updated.
reproductive efficiency - Answer the number of live offspring born in a given period
profitability (the more young born, the more you have to sell and the more income you have) -
Answer what is the importance of reproductive efficiency?
more offspring lessens the cost/unit (offspring reduce our overhead costs per animal) - Answer
what is the effect on maintenance of reproductive efficiency?
more offspring is greater opportunity for genetic improvement (if more young to select herd
replacements, we apply more selection pressure to the traits used) - Answer what is the effect
on the selection progress of reproductive efficiency?
physiology of the animal, genetic potential, nutrition, season of the year, other environmental
factors - Answer what are the factors influencing reproductive efficiency?
physiology of the animal - Answer factor influencing reproductive efficiency:
hormone levels
genetic potential - Answer factor influencing reproductive efficiency:
(for reproduction) select genetic capability animals
nutrition - Answer factor influencing reproductive efficiency:
(of the sire and dam) not too fat or too thin (males produce more sperm on moderate
nutrition), flushing
season of the year - Answer factor influencing reproductive efficiency:
cattle-sheep-horses-pigs-chickens
other environmental factors - Answer factor influencing reproductive efficiency:
heat at 105°F, humidity → negative; cold- animals are pretty adapted
testis (testes) - Answer male reproductive organ:
, primary sex organ of the male
gamete (sperm) function - Answer male reproductive organ function:
within the testicle, sperm are produced by the seminiferous tubules (continue to produce sperm
throughout)
endocrine function - Answer male reproductive organ function:
within the testicle, testosterone is produced by the interstitial cells (in between seminiferous
tubules)
epididymis - Answer male reproductive organ:
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)
vas deferens - Answer male reproductive organ:
a tube that transports sperm from the epididymis to the urethra
vasectomy - Answer male reproductive organ function:
a portion of the vas deferent is removed
ampulla - Answer male reproductive organ:
in animals that ejaculate rapidly (bull, stallion, ram and buck), a reservoir is found at the point
where the vas deferent joins the urethra
no ampulla - Answer male reproductive organ function:
animals that ejaculate slowly (such as a boar and a dog) have...
accessory sex glands - Answer male reproductive organs:
adding to sperm calls such as nutrients, enzymes and fluid to live longer or have more action
uretha - Answer male reproductive organ:
large muscular canal extending from the bladder through the full length of the penis serving as
a passageway for sperm and urine
penis - Answer male reproductive organ:
organ of copulation in the male and passageway for urine and semen (through the uretha); 2
types: fibroelastic, vascular
