104.Most frequent disturbances of sexual maturation in gilts. ’On farm’ diagnostic methods and methods of prevention/therapy

Question 1

Cyclic disorders

Answer 1

Cyclic disorders

• During sexual maturation ….Infantile ovary or Juvenile ovary (1cm)

Question 2

Background?

Answer 2

Background
• AI or mating at 1st heating
o (2nd or 3rd, optimal weight – 60% of adult at least)
• Silent heat so we need proper heat detection
• Housing
o No free range, no area for moving, too big groups, short feeding line
• Feeding
o Fattening feed ad libitum, low protein content, low minerals, etc
• Mikooestrogenes, Fusarium toxins… – ovarian cysts (small, large, multiplex)
• Fattening is not good for breeding gilt –> after one farrowing – slaughtering
• Modern breeds ~ 40-50% gilt selection
• Long lifespan needed to make successful production

Question 3

Nutritional disorders?

Answer 3

Nutritional disorders

Mycotoxins – follicular cyst, luteal cyst

Improve diet according to deficiencies