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Reproduction in Swine
From ANS 316 Species 1 Lecture
5
Veterinary Medicine
Undergraduate 3
06/07/2013

Additional Veterinary Medicine Flashcards

 


 

Cards

Term
Estrus
Definition
  • Ovulation occurs over a 6-8 hr period with a high fertilization rate
  • 95-100% of the ova ovulated are fertilized
  • Compared to cow and mare who have fertilization rate between 60-85%
Term

Estrual Behavior

 

Definition
  • Female will seek out boar
  • may attempt to mount boar or other female
  • will stand for mounting
  • swollen and reddened vulva
  • induction of mating posture by applying back pressure
Term
Embryonic Mortality Rate
Definition
  • High mortality rate despite high rate of fertilization
  • 35% of embryos resulting from fertilization die during pregnancy
  • Majority of embryonic death occurs by day 25 of pregnancy
Term
Postpartum etsrus
Definition

40% of sows will experience an estrus 2-3 days after parturition

 

 

Anovulatory- hence, not a fertile estrus

Term
True lactational anestrus
Definition
  • Sows experience a true lactational anestrus where no estrous cycles occur while the piglets are nursing
  • removal of the piglets will cause a fertile estrus within 3-7 days of weaning
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