EQUINE_NORMAL PREGNANCY

Question 1

WHEN DOES THE 1ST CLEVAGE OCCUR?

Answer 1

24 HRS POST FERTILIZATION

Question 2

MATCH THE DATES TO THE EVENT
DAY 6- 16 fixation of embryo
DAY 15- 17 CL DEGENERATION
DAY 75-175 maternal recognition
DAY 120-150 RELAXIN INCREASES

Answer 2

day 6- 16 > maternal recognition
15-17 > fixation of embryo
120-150 >CL degenerates
75- 175 > relaxin increases

Question 3

where does fixation occur?

Answer 3

flexure of a caudal horn

Question 4

how is CL lysis prevented in the initial stages of pregnancy?

Answer 4

when embryo touches endometrium it inhibits PGF2A
-aka recognition of pregnancy

Question 5

what type of placenta does the mare have?

Answer 5

non-deciduous diffuse epitheliochorial placenta

Question 6

WHEN IS THE AVERAGE TIME FOR THE PLACENTA TO PASS?

Answer 6

30 MINS TO 12 HRS
MOT COMMONLY 3 HRS

Question 7

WHAT IS THE AVERAGE WEIGHT OF THE PLACENTA?

Answer 7

4-8Kg

Question 8

WHAT ARE THE 2 MEMBRANES OF THE PLACENTA?

Answer 8

INNER- AMNION - FOAL AND UMBILLICAL CORD
OUTER- CHORIOALLANTOIS - UTERUS

Question 9

WHAT ARE THE COMMON SIGNS OF OESTROUS?

Answer 9

• EVERSION OF CLITORIS/WINKING
• FREQUENT URINATION/ SQUAD
• ELEVATING TAIL
• SQUAT TO URINATE/ BREAKING DOWN
• ACCEPT STALLION

Question 10

LIST 3 FACTORS THAT CAN AFFECT VISUAL INTERPRETATION OF SIGNS OF HEAT

Answer 10

1. FOAL AT FOOT- WON’T SHOW SIGNS
2. NORMAL BEHAVIOUR OF PARTICULAR MARE- NOT SHOW SIGNS OF HEAT OR HAVE FREQUEN FALSE HEAT
3. AGGRESSIVE STALLION- MARE KICKS AND SOWS FALSE SIGNS OF DIESTROUS

Question 11

WHAT PART OF THE CYCLE IS FSH PEAK?

Answer 11

DIESTROUS

Question 12

WHICH IS NOT TRUE FOR DIESTROUS:
A. 14-16 DAYS DURATION
B. CAN BE USED TO TRACK CYCLE
C. PROGESTERONE IS THE PREDOMINANT HORMONE
D. REMNANT SIGNS OF ESTROUS EXIST

Answer 12

D
SIGNS OF ESTROUS CEASE DURING DIESTROUS

Question 13

what is the common appearance of uterine horns in oestrous?

Answer 13

sliced orange
- alternating echogenic and non-echogenic areas

Question 14

LIST 4 DRUGS THAT CAN BE USED TO CONTROL THE EQUINE OESTROUS CYCLE

Answer 14

1. HUMAN CHORIONIC GONADOTROPIN
2. DESLORELIN
3. PROGESTAGENS
4. PROSTAGLANDINS

Question 15

WHATS THE NORMAL FRACTIONS OF EJACULATE? DESCRIBE

Answer 15

1- PRE SPERM- WATERY
2- SPERM RICH - CREAMY
3- POST SPERM - GELATINOUS

Question 16

WHERE IS THE OOCYTE FERTILIZED?

Answer 16

AMPULLA/ ISTHMUS

Question 17

WHAT’S THE ORDER OF PARTS OF THE UTERINE HORN FROM OVARY TO UTERUS?

Answer 17

INFUNDIBULUM
AMPULLA
ISTHMUS
- IN AH ISLAND :)