Summary Animal health, welfare and management

A snapshot of the summary - Animal health, welfare and management

• Lactation

• Why did the milk production of dairy cows increase so much?

  More knowledge of food
• How does bad fertility effect the health of the cow indirectly?

  Farmers will replace the cow that won't get pregnant.
• Why is welfare and health of animals important?

  • Economics and sustainability
  • Intrinsic value
  • Anthropomorism
  • Comparitive neurophysiology

• Consequences of lactation for reproductive parameters of sows and cattle

• What happens in course of lactation in pigs?

  • LH pool restores
  • Antral follicle pool develops
  • Pre- ovulatory LH surge mechanism develops
  • Endometrium recovers/regenerates
• Why does the oocyte quality decrease?

  • LH pool didn't restore due to NEB
  • Antral follicle pool did not develop enough 
• What are the consequences if the antral follicle pool does not develop enough?

  • No bigger follicles --> Not enough oestradiol --> No LH surge --> No ovulation
    
  • Low quality CL after ovulation --> less pogesterone --> less embryo growth
• What is the consequence of a decreasing oocyte quality?

  Smaller litters
• What are NEB associated hormones?

  Insulin, Leptin, IGF-1, (sow) NEFA, urea (cow)
• What do NEB associated hormones affect of the reproduction system?

  Ovaria and hypothalamus
• How can you prevent lactational consequences for fertility in sows?

  • Stimulate feed intake
  • Weaning management