Can Horses Fake a Pregnancy

1
(No Transcript)
2
Whats a false pregnancy anyway?

• A horse shows symptoms of pregnancy but there is
  no baby!

3
Lets review reproduction!

• 21 day ESTROUS CYCLE is controlled by hormones

Hypothalamus - GnRH
Pituitary - FSH
Ovaries - Estrogen
Pituitary - LH
Corpus Luteum - Progesterone
Uterus - PGF2a
How can this change in a false pregnancy?
4
Physiologically

• Initially pregnant
• embryo loss

Ovaries

• Never pregnant
• defective ovulation

Uterus
5
Nutritionally

• Digestive Upset
• - Bloat
• - Too much feed/protein
• - Stress

• Mycotoxins
• -Zearalenone
• estrogen-like response in mares (estrogenism)

YKNOW, I WASNT BOWLEGGED UNTIL YOU GOT FAT!
6
Psychologically.
New Mare
7
Foalproof detection

• Rectal Palpation of Corpus Luteum

• Ultrasound

8
(No Transcript)