ANSC 1401 EXAM WITH 90 QUESTIONS & CORRECT
ANSWERS
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
ANSWERS
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
