Estrous Cycle Determination

Question 1

Vaginal examination is most common in ______________, a visual exam will require a vaginal _____________ and light source, where a manual exam requires a sterile _______ _______________ with sterile water soluble lube

Answer 1

Horses
Speculum
OB sleeve

Question 2

After evacuating feces for good contact, what is the best way to determine a mares estrous cycle phase

Answer 2

Ultrasound per rectum

Question 3

An ultrasound per rectum can help predict ovulation time for the following year, since it allows you to visualize and ______________ the ______________ inside the ovary

Answer 3

Measure
Follicle

Question 4

Most mares ovulate when the follicle reaches….

Answer 4

35-55mm

Question 5

Visual herd checks for ovulation for observation of standing heat in cattle, swine, goats, and sheep includes
1. Females that allow others to ___________
2. ____________ hair
3. Hair missing from ___________ of tail
4. Mud/dirt on top of ________________

Answer 5

Observation of standing heat
1. Females that allow others to mount
2. Ruffled hair
3. Hair missing from head of tail
4. Mud/ dirt on top of hindquarters

Question 6

Swine assume ______________ position when ovulating for observation of standing heat, legs rigid and erect ears (_______________). Handlers can check by pressing firmly on their ______________ or walking the males by

Answer 6

Lordosis
Motionless
Back

Question 7

Grease pen on the female tail head or electronic mounting devices are two additional ways for…

Answer 7

Observation of standing heat

Question 8

Vaginal cytology is limited practice application in LA since the phases are not as ______________ as small animal

Answer 8

Specific

Question 9

__________________ _________________is used as a management tool when breeding
a large # of females

Answer 9

Estrous synchronization

Question 10

Estrous synchronization is used as a management tool when breeding
a large # of females with treatment of prostaglandins, progesterone, and estrogen compounds, what are four ways they can be administered

Answer 10

1. Individually
2. Cocktail
3. Feed additive
4. SQ (in cattle ears)