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Onset of oestrus and periovulatory events in sheep exposed to 5 and 14 days of CIDR treatment with and without eCG
Author(s) -
Uriol Marta,
MartinezRos Paula,
Rios Alejandro,
Encinas Teresa,
GonzalezBulnes Antonio
Publication year - 2019
Publication title -
reproduction in domestic animals
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.546
H-Index - 66
eISSN - 1439-0531
pISSN - 0936-6768
DOI - 10.1111/rda.13537
Subject(s) - ovulation , estrous cycle , insemination , artificial insemination , estrus synchronization , medicine , zoology , endocrinology , andrology , biology , pregnancy , hormone , sperm , genetics
The present study supports that 5‐day short‐term CIDR treatments without administration of eCG are equally effective for inducing oestrus behaviour, preovulatory LH discharge and ovulation in sheep than classical protocols based on 14‐day treatments plus eCG at CIDR withdrawal. However, the implementation of a 5‐day protocol without eCG for fixed‐time artificial insemination would be adapted to a later timing of ovulation ( p < .05).