Application of timed artificial insemination protocols to grazing Japanese black cattle with long open period

To investigate the viability of timed artificial insemination (TAI) protocols in grazing Japanese Black cattle with long open period, ovarian status and progesterone and estradiol-17 β profiles of the animals during the protocol were monitored. In 1998, prosta-glandin F2a (PG) was administered to 36...

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Veröffentlicht in:	Journal of Veterinary Medical Science 2003, Vol.65(4), pp.459-464
Hauptverfasser:	Osawa, T. (Iwate Univ., Morioka (Japan). Faculty of Agriculture), Morishige, D, Ohta, D, Kimura, Y, Miyake, Y
Format:	Artikel
Sprache:	eng
Schlagworte:	Animals ARTIFICIAL INSEMINATION BEEF CATTLE Cattle - physiology Corpus Luteum - physiology Dinoprost - administration & dosage Estradiol - blood Estrus Synchronization Female Fertility Agents, Female - administration & dosage Fertilization - physiology Gonadotropin-Releasing Hormone - administration & dosage hormonal profile HORMONES Insemination, Artificial - methods Insemination, Artificial - veterinary Ovary - physiology OVULATION Pregnancy Pregnancy Rate Progesterone - blood SYNCHRONIZATION synchronization of ovulation Time Factors timed AI
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