Off-Season Reproductive Performance of Tsurcana Ewes Under Five Estrous Induction Protocols with Different Hormonal Profiles.

ABSTRACT: The low profitability of small-scale dual-purpose (milk-meat) farming has caused the decline of Tsurcana sheep, making hormonal reproductive optimization essential to sustain Tsurcana sheep farming. We aimed to identify an effective protocol for out-of-season estrous induction in Tsurcana micro-farms. Five protocols were tested in multiparous ewes under free-range conditions (n = 100; 20/group): T1-prostaglandin F₂α (PGF₂α) on day 9/gonadotropin-releasing hormone (GnRH) on day 12; T2-PGF₂α on day 9/pregnant mare serum gonadotropin (PMSG) on day 11; T3-PGF₂α + PMSG on day 9/GnRH on day 12; T4-PGF₂α on day 12/PMSG on day 13; T5-PMSG on day 13. The fluorogestone acetate (FGA) sponges were removed on day 9 (T1-T3), day 12 (T4), or day 13 (

SUBMITTER: Giurginca NA 

PROVIDER: S-EPMC12467678 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature