Exam 2 - Birds/Reptile Reproduction Flashcards
difference in birds & reptiles/chelonians with development of the reproductive tract
avian - left ovary & oviduct develop, right side regresses
reptiles/chelonians - bilateral development of ovaries/oviduct
difference in birds & reptiles/chelonians with their continuous or cyclical breediing
avians - age of maturity highly variable
reptiles/chelonians - size dependent maturation
difference in birds & reptiles/chelonians with follicular development
avians - visible hierarchy of follicles
reptiles/chelonians - all follicles develop simultaneously, ovulate all at once
difference in birds & reptiles/chelonians with spaying procedures
avians - parrots cannot be spayed due to ovarian a. branching either directly off aorta or cranial renal a. (too short)
reptiles/chelonians - can be spayed
explain spaying in a parrot
cannot spay due to ovarian a branching either directly off aorta or cranial renal a. (too short)
can remove oviduct because of oviduct neuroendocrine substance that stimulates ovulation
what is a determinate layer
what species?
fail to lay additional eggs in the event of egg loss
chelonians, reptiles, budgies, most other avian orders
what is an indeterminate layer
what species?
loss of an egg stimulates a second cycle to lay another egg
psittacines, anseriformes (ducks/geese), galliformes (chickens)
a budgie is a(n) _____ layer
determinate layer
any other parrot is a(n) ____ layer
indeterminate layer
why should you NOT take away a parrots egg?
they are indeterminate layers and will continue to lay eggs = exhaustion
normal reproductive clinical signs during folliculogenesis
hypercalcemia
hyperlipidemia
large liver (esp reptiles/chelonians) - hepatic lipidosis
birds like ravens have a ____ atresia
bursting atresia
parrots have a _____ atresia
invasion atresia
where is majority of the albumen (egg white) formed
magnum
where does the ovum spend the most time?
uterus (shell gland)
