Other Flashcards
Maternal recognition of pregnancy in mares:
Oestrogens and a Protein of 40,000 D molecular weight
Special features of early pregnancy in mare:
Thin, glycoprotein capsule between Day 6-23
How long is the duration of estrus in mare?
5-7 days
When is the ovulation in mare?
24-48 hours before the end of estrus
Which hormon is the best for mare cycle synchronization?
Progestagen injection
Which organ produces eCG:
Trophoblasts cells from endometrial cups
When is it good to mate/inseminate horse?
+/- 6 hrs before after ovulation
When is the capsule development in mare?
From day 6 to day 22-26
Why is GnRH implant good for female horse?
It pushes the horse out of its transition period (induce estrous)
What do you use to shorten the spring transitional period in horses?
Light (also progestagen injection, hCG, GnRH)
What would you use/not use to induce ovulation in horse?
Use: light, progestogen, GnRH, hcG
Not use: ecG
What is a special characteristic for equine embryo development?
Capsule development from day 6 to day 22-26, implantation on 17th day and enters
uterus on day 5-6
What is capsule of the zygote?
Thin glycoprotein layer
Which organs are the protecting seals of tubular genitals in the mare?
A. The vulval lips
B. The vulval lips and the internal uterine ostium
C. The vulval lips and the internal and external uterine ostium
D. The vulval lips, the cervix and the vestibular seal
E. The vulval lips and the vestibular seal
D. The vulval lips, the cervix and the vestibular seal
Which statement is true in connection with the terciar (antral) follicles in mare?
A. The follicles are palpabe rectally in every case
B. The follicles are never palpable rectally
C. The follicles appear on the ultrasonograph as a nonechogenic area
D. The follicles cannot be examined using ultrasonography
E. The follicles can only be examined using ultrasonography
C. The follicles appear on the ultrasonograph as a nonechogenic area