Camelids Flashcards
when is camelid puberty in females?
12-36mo
when is breeding in camelids?
15-18 mos for ease of parturition
60-70% mature BW
tell me the difference between domestic and wild camelids in terms of seasonality of reproduction
wild: seasonal
domestic: non-seasonal
describe the camelid reproductive cycle
no estrous cycles!!!
successive follicular waves (long periods of receptivity with short periods of non receptivity)
follicular phase repeats until ovulation occurs
growth, maintenance, and regression of each dominant follicle in camelids takes… how long?
12 days
true or false: receptivity in camelids correlates with follicle size
false! no correlation!
true or false: follicular waves continue during luteal phase in camelids
true
when is ovulation? for both copulation and induced
after copulation (42h)
hCG: 24h
what induces ovulation when male and female have sexy times?
substances in seminal plasma
tell me the relative percentages of breeding and ovulation in camelids
1 breeding = ovulation 75% of time
50% ovulate in 26-30h
24% in 30-72h
true or false: increase in # of breedings within 48h increases ovulation rate
false! it does NOT!
true or false: size of follicle at time of breeding relates to ovulatory response
true
what are the 3 main types of breeding regimens?
- field breeding (1 male, several females): breeding dates unknown
- pen breeding (1 male, 2-3 females): females may be bred too frequently
- hand breeding: keep # of breedings to a minimum, causes cervical/uterine inflammation
CL diameter is highly correlated with what?
P4 concentration
tell me what happens during the luteal phase if camelid is not pregnant?
P4 peaks 8-9 days after breeding, returns to baseline 12d after breeding if not pregnant, not receptive to male when P4 >0.5ng/ml (elevated)
when does fertilization happen after breeding?
24-36h after breeding
embryo goes into uterine body ____ after breeding
5-7 d
true or false: most embryos implant in the left horn in camelids
true
LH!
when does the CL regress in camelids?
IT DOESNT!!!! CL IS NEEDED FOR ENTIRE GESTATION
what is the gestation length in camelids?
345d
how can you dx pregnancy in camelids?
- behaviour testing
- P4 con
- transrectal US
- transabd US
how can you use P4 concentration to dx pregnancy in camelids?
not preg: <0.5ng/ml
preg alpaca: 1.5-5ng/ml
preg llama: 3-8nm/ml
how can you use transrectal US to dx preg in camelids?
only for diagnosis <45d
12-14d: anechoic space
17-18d: embryo visible
28d: heart beat
how can you use transabdominal US to dx preg in camelids?
only for diagnosis >45d
45-80d L side adjacent to udder
>80d R side
