Avian Reproduction Flashcards
territory
Many birds of definable area they claim
- Ex) robin, pheasant, budgie
What type of nesting does budgie do?
Gregarious
- colonial, communal
cavity nests
holes in trees = nests
oriole nests
yen but with sticks
Mating
- photoperiod important!
- courtship (varies)
- artificial (turkeys)
Define photoperiod
length of day
Many birds are ___-day breeders
long-day
Artificial mating is a note for what type of birds?
turkeys
ovulation of which organ and where?
- single ovary (left side)
oviduct
- tube where occur/egg passes from ovary
- Infundibulum (funnel): fertilization
- Magnum: albumen
- Isthmus: shell membranes
- Uterus: shell gland
- UV junction: sperm host glands
- Vagina
Infundibulum (funnel) does what?
fertilization
magnumdoes what?
albumen
Isthmus does what?
shell membranes
uterus (shell gland
Oviposition from __-
cloaca
Chicken Reproductive Tract
Cloaca, shell gland, isthmus, magnum, infundibulum, follicles
paired testes at _____ temperature
deep body temperature
Male reproductive: vas deferencs
“beside ureter”
Male: lack of ___
accessory glands
phallus: generally ___
reduced
when does incubation start?
after first egg is laid, when clutch has been laid
- effect of hatchligns
who incubates?
both: 69%
Females: 25%
Males 6%
incubation Temp
100F
incubation humidity
55% RH
incubation gas exchange (ventilation)
need adequate oxygen + need to remove CO2
incubation: Turning
eggs need to be turned several times per day
natural incubation
use broody hen as example
stops laying
how to determine viability?
“candling” eggs
when does yolk sac start to enter body cavity?
19th day
Would precocial chicks be able to regulate body temperature?
They don’t, must give them heat until they’re feathered out
