Optimizing ReBreed21 II: Fertility and reproductive efficiency in different parities during a shortened breeding season in beef cattle

This study evaluated the efficiency of a rapid reinsemination program allowing timed AI (TAI) every 21d (ReBreed21) in a commercial beef cow-calf operation. Nelore females from different parities (n = 2085) were synchronized for first TAI (D0 = TAI) using an estradiol/progesterone (E2/P4) protocol a...

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Veröffentlicht in:	Theriogenology 2024-08, Vol.224, p.41-49
Hauptverfasser:	Andrade, João Paulo N., Monteiro, Pedro J.L., Prata, Alexandre B., Robl, Adelino J., Neto, José, Lippe, Beatriz, Ribeiro, Heuller S., Hartmman, Diego, Sartori, Roberto, Wiltbank, Milo C.
Format:	Artikel
Sprache:	eng
Schlagworte:	Animals beef beef cattle blood flow Bos indicus Breeding season Cattle - physiology corpus luteum cow-calf operations Doppler ultrasound equine chorionic gonadotropin estradiol Estradiol - administration & dosage Estradiol - pharmacology Estrus Synchronization - methods Female Fertility Insemination, Artificial - methods Insemination, Artificial - veterinary Nellore ovulation Parity Pregnancy pregnancy diagnosis Pregnancy Rate progesterone Progesterone - administration & dosage Progesterone - blood Progesterone - pharmacology reproductive efficiency Seasons Timed AI ultrasonography
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