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. 2021 May 9;54(2):306–311. doi: 10.1111/evj.13455

TABLE 1.

Ovulation rates after the induction of ovulation with GnRHa or hCG, in mares in early (phase 1) and late (phase 2) transition period and showing full heat or incomplete heat expression

Factor Ovulation rate (%) P value
Agent
GnRHa 11/29 (37.9%) <.001
hCG 30/33 (90.9%)
Phase
Phase 1 17/32 (53.1%) .03
Phase 2 24/30 (80.0%)
Heat expression
Full 32/41 (78.0%) .01
Incomplete 9/21 (42.9%)