Avian, porcine, camelid reproduction Flashcards
Sex chromosomes in birds…
ZZ - males
ZW - females
All birds have 2 ? during embryological stage…
2 ovaries/testis
Testosterone in male chooks
bright coloured feathers
Vitellogenesis…
dev. of yolk in follicles stim. by E2
capon…
castrated rooster
stigma…
point of ovulation
Avian female anatomy…
1 ovary (left sided) Parts of oviduct differ in magnum & cloaca
Progression of egg development… important!
infundibulum -> magnus -> isthmus -> uterus -> vagina -> cloaca
Avian male anatomy…
Intra-abdo testis phallus no accessory glands breed via cloacal abutment spindle shaped sperm
Chicken incubation?
21 days
Re porcine repro. maternal recognition…
embryo produces E2 -> PGF2alpha into uterine lumen -> prevent luteolysis
Re porcine repro. How much sperm is required in AI?
1 billion sperms
Re porcine repro. What is the incidence of dystocia?
< 1%
Re porcine repro. sows are in oestrus how many days after weaning…?
3-10 days post weaning
Re porcine repro. Diseases…
stillbirth mummification embryonic death infertility leptospirosis erysipelas
Re camelid repro. Ovulation..?
induced ovulators induced by - friction of hooked glands in cervix - ovulation inducing factor - orgling continual follicular waves
Re camelid repro. pregnancy always occurs…?
in the left side of uterus
Re camelid repro. what is criation?
process of giving birth
Re camelid repro. 4th membrane known as?
epidermal membrane
Re camelid repro. Unique features…?
induced ovulators
persistent frenulum in males that breaks down in time
preg. always on left side of uterus
4th membrane
