105.Pregnancy diagnosis in pigs

Question 1

Pregnancy check?

Answer 1

Pregnancy check
Visual
• Simply looking at the pig
• Ultrasound check
• Identify the return pigs (max. 1 more AI)
• “Non return” sows – US at day 28-30 (identify the “silent” sows) and use real time US
• Until US check in AI cage
• Palpation of uterine artery
• Endocrine diagnosis – estron-szulphate test from day 24-26, Progesterone – often false (many CL) therefore
need of lab. background
• Histological sample from vagina to see thickness of epithel layer

Question 2

Endocrine pregnancy check?

Answer 2

Endocrine

• maternal or embryonal hormone production
• Exactly registered AI time
• Morula, BLASTOCYST – E2 production
• P4 – high cc in the time of next follicular phase – not pregnancy specific
• 20 to 100 % embryonic mortality till blastocyst stage
• Practical importance of pregnancy check from attachment

Question 3

Palpation and endocrine diagnosis pregnancy check?

Answer 3

Palpation

• Uterine artery

Endocrine diagnosis

• Estron-sulphate test from day 24-26
• Progesterone- often false (many CL)

o Need of laboratory background

Question 4

Economic principals?

Answer 4

Economic Principals

• Reduce false diagnosis therefore increase reliability
• Practical and simple method needed
• Immediate result