Lecture 17 & 18: Small Ruminant Repro

Question 0

what is the best way to induce estrus during transition or the anovulatory season?

Answer 0

progestogen/progesterone impregnated vaginal devices

- it has the best submission rate, fertility and prolificacy

Question 1

time of ovulation for sheep and goats

Answer 1

sheep: 24 - 30 hours from onset of estrus
goats: 30 - 36 hours from onset of estrus

Question 2

When AI-ing a small ruminant how much semen should you deposit where?

Answer 2

volume is in reference to the size of the cavity you inseminate.
in vagina put 400million
cervix 200million
in uterus put as much as you want

Question 3

what are indirect pregnancy tests?

Answer 3

return to estrus (doe: 21 days, sheep: 17 days)

progesterone > 1ng/ml (doe: CL throughout, ewe: luteo-placental shift @ day 50)

Question 4

which animal is NOT CL dependent throughout gestation? what is the significance of this info?

Answer 4

the ewe (sheep), after day 60 there is no CL
- this means that prostaglandins are NOT effective

• prostaglandins cause uterine contraction

Question 5

which animal is CL dependent throughout gestation?

Answer 5

doe (goat)

Question 6

which disease causes ascending infection and what is the origin of the disease?

Answer 6

lamb epididymitis

actinobacillus seminis or histophilus somni

Question 7

brucell ovis occurs in which animal and causes which disease?

Answer 7

occurs in rams and causes ram epididymitis

Question 8

is ram epididymitis unilateral or bilateral?

Answer 8

unilateral

Question 9

what is one way to dx ram epididymitis?

Answer 9

evaluating semen for WBCs and detached heads

Question 10

what disease is reportable in the US but not Fl?

Answer 10

ram epididymitis

Question 11

what causes false pregnancy in goats (does)?

Answer 11

hydrometra, mucometra, cloudburst

Question 12

what is one way to dx false pregnancy in goats?

Answer 12

bioPRYN / estrone sulfate - negative

Question 13

is vaginal prolapse more common in ewes (sheep) or does (goats)?

Answer 13

ewes (sheep)

Question 14

what is the difference between small ruminants and cows in regards to hypocalcemia?

Answer 14

in small ruminants it occurs pre-partum whereas in cows it occurs post-partum with initiation of lactation

Question 15

which diseases cause abortion and are zoonotic?

Answer 15

toxoplasmosis
enzootic abortion
vibriosis
Q fever
listeriosis
brucellosis
lepto
salmonellosis

Question 16

what iis the most significant cause of abortion in sheep?

Answer 16

campylobacteriosis vibriosis

caused by campylobacter jejuni and C. fetus

Question 17

what does blue tongue virus cause?

Answer 17

its a virus that causes hydraencephaly and edema of head and tongue (frequently a cleft palate)