Results 21 to 30 of about 201 (116)
Acta Veterinaria, 2022 The reproductive efficiency of the cows was monitored after two resynchronization protocols: Ovsynch (OVS) and Double Ovsynch (DOS). The research initially included 70 HF cows who entered the first synchronization protocol – Presynch.
Đorđević Milan +6 more
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Impact of presynchronization and Ovsynch on early postpartum ovarian activity and fertility of dairy cows in Libya. [PDF]
Open Vet JBackground: Reproductive efficiency affects dairy cow profitability. Ovarian function in postpartum has been better understood using ultrasound and hormonal assays.
Mariol NM +4 more
europepmc +2 more sources
158 Comparison of different presynch-based synchronization protocols in postpartum dairy cattle [PDF]
J Anim Sci, 2019 Abstract Objectives were to evaluate three timed AI presynch-based synchronization protocols in lactating Holstein-Frisian cattle. Lactating cows (n = 207) were randomly divided into one of the three treatments: 1)PG-PG-Ovsynch (n = 71), cows were subjected to PG(PGF2α;i.m) at 11-d apart.
SHAHZAD A +5 more
europepmc +3 more sources
Can GnRH Be Used to Induce Ovulation Early in Lactation and Improve Fertility in Dairy Cows?
EDIS, 2014 It is well established that early cyclicity results in increased pregnancy per artificial insemination and decreased time to pregnancy. But none of the previous studies have used synchronization programs such as the Presynch-Ovsynch as part of their ...
Klibs N. Galvão
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Efficacy of the presynch-ovsynch program on some reproductive parameters in postpartum dairy cows
Acta veterinaria, 2008 In this study, the aim was to evaluate the presynch-ovsynch protocol on the intervals from calving to first insemination, calving to pregnancy, calving to calving in postpartum lactating cows. Lactating Holstein cows (n=104, 3-5 years old, 450-500 kg BW, 27±3 kg/day average milk yield) were enrolled in the study 26-41 days postpartum.
Aköz, Mehmet +2 more
openaire +2 more sources
Jurnal Kedokteran Hewan, 2018 Penelitian ini bertujuan mengetahui peningkatan level steroid dan persentase kebuntingan sapi aceh terhadap induksi ovulasi dengan metode presynch-ovsynch.
Mulyadi Adam +6 more
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Journal of Dairy Science, 2022 : Lactating dairy cows are classified as spontaneous ovulators, in which establishment of pregnancy depends on the accuracy of detection of behavioral estrus for correct timing of artificial insemination (AI).
P.M. Fricke, M.C. Wiltbank
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EFFECT OF DOUBLE OR PRE-SYNCHRONIZATION OVSYNCH PROTOCOLS ON FOLLICULAR DYNAMICS, PROGESTERONE PROFILE AND FIRST SERVICE PREGNANCY RATE IN TIMED ARTIFICIAL INSEMINATION IN FRIESIAN COWS [PDF]
Journal of Animal and Poultry Production, 2015 Aim of this study was to determine the effect of double-Ovsynch (DO) and pre-synchronization (PS) protocols on ovarian follicular dynamics, progesterone (P4) concentration and pregnancy rate at first postpartum AI in Friesian cows.
M. Omar, M. El-Banna, M. El-Harairy
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Inseminations at estrus induced by the presynch protocol before timed artification insemination
Kansas Agricultural Experiment Station Research Reports, 2004 A controlled field study examined conception rates after two timed-AI (TAI) breeding protocols conducted on two commercial dairy farms. Estrous cycles in postpartum lactating cows were presynchronized with two injections of PGF2" given 14 days apart (Presynch) and then, after 12 days, the standard Ovsynch protocol (injection of GnRH 7 days before and ...
A.P. Phatak, Jeffrey S. Stevenson
openaire +2 more sources
Revista Científica, 2023 The objective of the field experiment was to study the effect of different protocols for estrus synchronization with timed artificial insemination (TAI) on the manifestation of clini- cal signs of estrus (CSE) and conception rates in the Bulgarian ...
Radena Nenova
doaj