Canine Ovulation Timing

Canine Ovulation Timing

 

Table 1. Correlation of serum progesterone concentration with significant reproductive events in the bitch. The margin of error is estimated to be about +/- 1 days.

 

Serum Progesterone (ng/ml) Event
Less than 1.0 Anestrus or proestrus
1.0 – 1.9 Ovulation minus 3 days – recommend recheck
2.0 – 2.9 Ovulation minus 2 days
3.0 – 3.9 Ovulation minus 1 day
4.0 – 10.0 Ovulation day
 –  Ovulation plus 2 days is optimal breeding day
Greater than 10.0 with cornified vaginal smear Ovulation plus 1 to 5 days

 

 

Table 2. Suggested days of cycle for insemination of bitches depending on the type of breeding management being conducted.

 

Type of Breeding Management Days to Breed or Inseminate  
Natural mating or fresh semen AI 3 to 6 days after the LH surge (i.e., 1 to 4 days after ovulation)  
Chilled fresh semen 4 to 6 days after LH surge (i.e., 2 to 4 days after ovulation)  
Frozen-thawed semen 5 to 6 days after the LH surge (i.e., 3 to 4 days after ovulation)