Camelid birth and dystocia Flashcards Preview

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Flashcards in Camelid birth and dystocia Deck (24)
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1

gestation length

variable

330-365

330 to 400 days have given live births

each cria has its own gestation length

spring bred females avg 12.5 days longer

2

predicting parturition

mammary enlargement

vulvar lengthening and softening (few days)

relaxation around vulva and anus (days to weeks)

individuals hx

less reliable signs: loss of cervical plug, cria kicking

3

Time of birth

majority of cria births occur during the daylight hours

 

4

stage 1

uterine contraction & cervical dilation

1-6 hr in duration

many do not show obvious external signs

may continue to graze normally

may show vague signs of discomfort: restlessness, getting up and down, increased humming, separation, appetite decrease, attempts to urinate/defecate, may roll

5

stage 2

fetal expulsion

usually takes <30 minutes

lonnger if primiparous

>45-60 min = decreased cria survival

breaking water often not seen

dam often delivers standing

nose or feet may appear first-close together in timing

legs below or above head

feet move further out than head

legs staggered

nose at level of fetlock of most retained foot

carpus and neck out in 5-10 min

rest of fetus generally delivered quickly

healthy crias quickly attempt sternal recumbency, brief period of open mouth breathing

6

epidermal membrane

extra fetal membrane-attached at MC junctions, coronets and umbilicus

7

after birth

dam does not usually lick or clean the cria after it is born

8

normal disposition of fetus

cranial longitudinal presentation

dorsosacral position

head, neck, and forelimbs in extended posture

9

stage 3

placental expulsion

2-6 hours after delivery of cria

diffuse epithelial-chorionic placentation

no caruncles

placenta is 10-15% of cria weight

95-98% pregnancies in left horn

 

10

what do you do if placenta is retained?

oxytocin

11

uterine involution

lochia passed for up to 10 days (brown thick mucoid changes to pink/white)

fresh blood abnormal

involutio takes 3 weeks

follicles present by 7 days

breading at 10 days (21% success)

breeding at 21 days (61%)

12

what fetal HR indicate stress?

<50 

>130

13

should we induce?

long gestation can give normal crias

>370 days may have increased problems

induction >375 days = 50% chance of being stillborn

 

14

dystocia

1-5% of births

placenta detaches rapid-fetal asphixia

maternal tissues delicate-gentle intervention

15

When is there a problem?

stage 1->6 hours, excessive discomfort

stage 2-not progressing (10 mins), parts of cria don't appear when expected

16

correction of maldispositions

provide pain relief

lube

limit efforts to 15-20 minutes if C-section is an option

repel for all

head and neck displacements difficult

c-section

fetotomy NOT recommended

17

uterine torsion

pregnant females in last 3 months of gestation

signs: colic, rolling, straining, increased HR & RR, anorexic

DDx: other colic causes

Dx with rectal exam

therapy: roll mom to catch up with her uterus

18

swine gestation length

3 months, 3 weeks, 3 days

 

19

swine preparatory changes

vulva swelling in last week

mammary glands distend with colostrum last 24 hours

sow tries to nest last 12-24 hours

lies in lateral for delivery

20

stage 2 in swine

duration 1-5 hours

interval between piglets ~15 mins

 

21

normal swine fetal depositions

 

cranial longitudinal, dorsosacral position with bilatera shoulder flexion

caudal longitudinal, dorsosacral position with hindlimbs extended

22

swine parturition induction

synchronize breeding

use drugs to induce

use prostaglandin

23

swine dystocia

indications for intervention: stage 2 for 45 minutes with no piglet

45 min betweeen piglets

gestation >116 days

sow due and now off color or distressed

malodorous/abnormal vaginal discharge

24

common swine dystocia

ventral head flexion

simultaneous presentation

breech

hock flexion

S-curve uterus

full bladder or rectum