Infertility in beef herds

Question 1

What is reproductive success?

Answer 1

pregnancy > 90%, within breeding season and > 90% viable offspring.

Question 2

What are the three parameters for measuring success in in herd fertility?

Answer 2

Breeding Season Length - Cows 60 days, Heifers 45 days, start breeding 2-3 weeks before cows.
Calving Distribution - 60 to 70% in first cycle, 85% in second, 95% in third.
Pregnancy % - Cows at 60 days 95%
- Heifers at 45 days 85%