Comparative Evaluation of Ovsynch and Double Ovsynch Protocols with Single and Double Insemination in Holstein Dairy Cows: Reproductive Performance and Cost Analysis [PDF]
AnimalsThis study investigated the reproductive and economic costs of four estrus synchronization protocols in multiparous Holstein dairy cows: Ovsynch with one or two artificial inseminations (AIs), and Double Ovsynch with one or two AIs.
Daniel Ionut Berean +2 more
doaj +4 more sources
Reproductive Efficiency of Low-Fertility Dairy Cows Submitted to Presynch-Ovsynch or Double-Ovsynch Scheme for First Service. [PDF]
Animals (Basel)Reproductive efficiency has a major impact on the profitability of dairy operations. Focusing on improving the reproductive performance of cows with expected reduced fertility is desired; however, further research is needed in this area. The objectives of this study were to identify a subpopulation of cows with suboptimal fertility and evaluate whether
Mendonça LGD +4 more
europepmc +6 more sources
The Fertility Outcomes of Egyptian Buffalo Cows after Ovsynch and Presynch-Ovsynch Protocols [PDF]
Journal of Applied Veterinary Sciences, 2023 The present study aimed to compare the reproductive outcomes after the blind application of the standard Ovsynch and Presynch Ovsynch protocols on Egyptian Buffaloes (Bubalus bubalis) during the breeding season. Fifty multiparous Egyptian buffalo cows of
Mahmoud Othman +3 more
doaj +2 more sources
Impact of presynchronization and Ovsynch on early postpartum ovarian activity and fertility of dairy cows in Libya [PDF]
Open Veterinary JournalBackground: Reproductive efficiency affects dairy cow profitability. Ovarian function in postpartum has been better understood using ultrasound and hormonal assays.
Najmi M. Mariol +4 more
doaj +3 more sources
Efficacy of a modified Double-Ovsynch protocol for the enhancement of reproductive performance in Hanwoo cattle [PDF]
Animal Bioscience, 2023 Objective We aimed to evaluate the efficacy of a modified Double-Ovsynch protocol vs artificial insemination following estrus detection (AIED) for the enhancement of reproductive performance in Hanwoo cattle.
Jae Kwan Jeong +2 more
doaj +2 more sources
Increased fertility in lactating dairy cows resynchronized with Double-Ovsynch compared with Ovsynch initiated 32 d after timed artificial insemination [PDF]
Journal of Dairy Science, 2012 The objective was to determine if using a Double-Ovsynch protocol [DO; Pre-Resynch: GnRH-7 d-PGF(2α)-3 d-GnRH, 7 d later Breeding-Resynch: GnRH-7 d-PGF(2α)-56 h-GnRH-16 h-timed artificial insemination (TAI)] to resynchronize ovulation after a previous TAI would increase synchrony and pregnancies per AI (P/AI) compared with an Ovsynch protocol initiated
Milo Charles Wiltbank
exaly +3 more sources
When Implementing the Presynch-11/Ovsynch Reproductive Management Program, the Fertility of Lactating Dairy Cows Improved When They Received Timed Artificial Insemination Compared with the Inclusion of Estrus Detection [PDF]
AnimalsArtificial insemination 12 h following observed standing estrus is a standard estimate of the fertility levels of cattle. The main objective of this study was to determine if controlling ovarian development with a fertility program could alter the ...
Jaimie Marie Strickland +3 more
doaj +2 more sources
The effects of presynch-10 and ovsynch on some endometrial tolland nod-like receptor gene expressions in repeat breeder cows [PDF]
Kafkas Universitesi Veteriner Fakültesi Dergisi, 2019 Subclinical endometritis (SE) is one cause of repeat breeder syndrome (RBS). When endometrial cells come into contact with antigens during inflammatory events like endometritis, they act like innate immune system cells.
Ali Reha AĞAOĞLU +8 more
doaj +2 more sources
Effect of a progesterone-releasing intravaginal device (PRID) for 8 days during a modified Ovsynch protocol on pregnancy outcomes in lactating Holstein cows [PDF]
JDS Communications, 2023 Our objective was to evaluate the effect of a progesterone-releasing intravaginal device (PRID) in a 7-d Ovsynch protocol on pregnancy per artificial insemination (P/AI) and pregnancy loss, compared with a standard 7-d Ovsynch protocol without ...
M. Hölper +4 more
doaj +2 more sources
Success of several programed AI-breeding protocols including ovsynch [PDF]
Kansas Agricultural Experiment Station Research Reports, 1996 In Experiment 1, four programmed AIbreeding treatments were tested. The so-called OvSynch program, which requires no heat detection before a fixed-time insemination, decreased conception rates compared with a similar treatment in which inseminations
Kobayashi, Y. +2 more
core +4 more sources