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Theriogenology Research

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Katie Woodard

on 28 September 2012

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Transcript of Theriogenology Research

Elevated estrogen levels during estrus cause vasodilation resulting in the VST change.

At ovulation estrogen levels drop and VST level return to baseline.

Vulvar surface temperature rise/drop in a valid tool to predict ovulation in the sow and gilt. Conclusion Results Following thermal readings:

Estrus detection using a live boar.

Once Estrus observed:
Trans-rectal ultrasound twice daily to determine ovulation Estrus Detection &
Ovulation Infrared thermal imaging camera
used twice daily to measure:
Vulvar Surface Temperature
Gluteal Surface Temperature Thermography 25 Gilts – Synced with Altrenogest (14 days orally)
PG600 (1 injection)
27 Sows – Weaned
Control – 30 Pregnant Sows (60 days gest)

Day 0 of experiment
Sow (Day of weaning)
Gilt (Day of PG600 injection)
Control (Day 60 of gestation) Estrus Synchronization Saara C. Scolari, DVM;
Sherrie G. Clark, DVM, MS, PhD, Diplomate ACT;
Robert V. Knox, PhD;
Manoel A. Tamassia, DVM, MS, PhD, Diplomate ACT Vulvar skin temperature changes significantly during estrus in swine as determined by digital infrared thermography
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