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ASC261 > Avian, porcine, camelid reproduction > Flashcards

Avian, porcine, camelid reproduction Flashcards

1
Q

Sex chromosomes in birds…

A

ZZ - males

ZW - females

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2
Q

All birds have 2 ? during embryological stage…

A

2 ovaries/testis

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3
Q

Testosterone in male chooks

A

bright coloured feathers

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4
Q

Vitellogenesis…

A

dev. of yolk in follicles stim. by E2

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5
Q

capon…

A

castrated rooster

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6
Q

stigma…

A

point of ovulation

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7
Q

Avian female anatomy…

A 
1 ovary (left sided)
Parts of oviduct differ in magnum & cloaca
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8
Q

Progression of egg development… important!

A

infundibulum -> magnus -> isthmus -> uterus -> vagina -> cloaca

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9
Q

Avian male anatomy…

A 
Intra-abdo testis
phallus
no accessory glands
breed via cloacal abutment
spindle shaped sperm
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10
Q

Chicken incubation?

A

21 days

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11
Q

Re porcine repro. maternal recognition…

A

embryo produces E2 -> PGF2alpha into uterine lumen -> prevent luteolysis

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12
Q

Re porcine repro. How much sperm is required in AI?

A

1 billion sperms

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13
Q

Re porcine repro. What is the incidence of dystocia?

A

< 1%

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14
Q

Re porcine repro. sows are in oestrus how many days after weaning…?

A

3-10 days post weaning

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15
Q

Re porcine repro. Diseases…

A 
stillbirth
mummification
embryonic death
infertility
leptospirosis
erysipelas
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16
Q

Re camelid repro. Ovulation..?

A 
induced ovulators
induced by
 - friction of hooked glands in cervix
 - ovulation inducing factor
 - orgling
continual follicular waves
17
Q

Re camelid repro. pregnancy always occurs…?

A

in the left side of uterus

18
Q

Re camelid repro. what is criation?

A

process of giving birth

19
Q

Re camelid repro. 4th membrane known as?

A

epidermal membrane

20
Q

Re camelid repro. Unique features…?

A

induced ovulators
persistent frenulum in males that breaks down in time
preg. always on left side of uterus
4th membrane

ASC261 (17 decks)

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