sheep Flashcards
(24 cards)
1) How do we name the adult female?
ewe
2) How do we name the adult intact male?
rom or tup
3) How do we name the adult neutered male?
wether
4) How do we name the young sheep?
lamb
5) Age of puberty
ewe- 6-8 months
ram - 4-6 months
6) Females are polyestrous or monoestrous?
polyestrus
7) Females are seasonal or non seasonal?
seasonal
8) When is the breeding season, if any?
short day breeders, fall-winter
9) Length of estrous cycle
17 days
10) Length of estrus period:
24 to 36 hours
11) What is the best time to do mating?
9 to 12 hours after onset of estrus
12) How do we detect the estrus period?
not easily detected, seek out ram, stand to be mounted by ram and other ewes
13) Is artificial insemination done? If yes, explain the method.
yes, vaginal insemination and intrauterine laparoscope insemination
14) What is a pessary? Give one reason for using this item in female sheep.
small solid block inserted into vagina to treat infection or as a way of contraceptive sponge = progesterone to induce estrus
15) Pregnancy length:
150 days av
16) Describe the type of placenta
cotyledonary
17) How do we detect pregnancy? Give 2 different methods.
ultrasound, rectal palpation
18) How do we name the parturition?
lambing
19) How long lasts the parturition
5 hours
litter size
1-3
what is the ram effect
ewes in anestrus are stimulated by the suddenly intro of a ram. they produce pheromones to stimulate estrus.
22) Give one species characteristic concerning the anatomy of the penis.
sigmoid flexure, glands penis, urethral process
23) Describe 2 conditions that could cause infertility in the male.
poor nutrition, heat stress
24) Discuss about the different breed types (breed categories).
wool
meat
dairy
