Estrus synchronization and AI

Question 1

what hormone can be used to synchronize animals

Answer 1

progesterone

Question 2

how does the ram effect work

Answer 2

causes a surge in LH, works when previously isolated females come in contact with a male

Question 3

where is the gland related to the flehmen response located

Answer 3

top of the mouth

Question 4

controlled internal drug releases

Answer 4

IUD shaped device left in animals for 12 days that release hormones into there system

Question 5

MGA
megestrol acetate

Answer 5

keeps cows from cycling in the feedlot

Question 6

how do pedometers or ear tags detect estrus

Answer 6

they identify and alert to any abnormal movement(i.e. taking more steps than usual)

Question 7

When is it more critical to properly detect estrus

Answer 7

when using frozen sperm

Question 8

when does capacitation happen

Answer 8

after ejaculation/when sperm enters female body

Question 9

what initiates capacitation

Answer 9

estrogen and uterine milk(and other substances in the female reproductive tract)

Question 10

what are artificial vaginas used for

Answer 10

semen collection(animal must be trained to use one)

Question 11

how is semen collected on an untrained animal

Answer 11

electroejaculator

Question 12

AI method used for cows

Answer 12

rectocervical (manipulation of cervix over AI gun via the rectum)

Question 13

AI method used for swine

Answer 13

Cervical (spirette enters cervix with counter clockwise rotation)

Question 14

AI method used for horse

Answer 14

vaginocervical (insemination gun into the cervix via the vagina

Question 15

how to tell if a horse is ready to be AI’d

Answer 15

35 mm follicle on ovary

Question 16

why is soy oil sometimes used in extender

Answer 16

some countries don’t allow egg yolk to be shipped internationally since its an animal protein

Question 17

what animal semen can not be frozen

Answer 17

turkey

Question 18

what animal semen is rarely frozen

Answer 18

horse

Question 19

seeder

Answer 19

‘Y’ shaped tool coated in progesterone, inserted into vagina for 12 days

Question 20

why is embryo transfer used

Answer 20

if one cow has bad genetics but good mothering

Question 21

super ovulation

Answer 21

giving extra dose of FSH so all follicles develop and produce viable oocytes instead of just one or two. used for embryo transfer

Question 22

how long after estrus should embryos be collected

Answer 22

6-8 days

Question 23

foley catheter

Answer 23

tube used to collect embryos

Question 24

PBS solution

Answer 24

flush solution used during embryo collection

Question 25

what is PBS solution made of

Answer 25

calf serum
antibiotic

Question 26

T/F it doesn’t matter what reproductive phase recipients of egg are compared to donor

Answer 26

FALSE. recipients must be in the same phase as the donor

Question 27

placentom

Answer 27

appears at day 60 of pregnancy, brown circle where placentae attaches to uterus