Results 131 to 140 of about 708 (172)
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 Wiltbank +2 more
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Reproduction in Domestic Animals, 2018
ContentsThe objective was to compare pregnancy per artificial insemination (P/AI) with conventional (CS) or sex‐sorted semen (SS) in dairy cows subjected to one of the three timed AI protocols. Cows (n = 356) were randomly assigned to synchronization with Ovsynch (OVS), Presynch–Ovsynch (PO) or Double‐Ovsynch (DO) and inseminated on Day 77 ± 3 ...
Ebru Karakaya‐Bilen +6 more
openaire +4 more sources
ContentsThe objective was to compare pregnancy per artificial insemination (P/AI) with conventional (CS) or sex‐sorted semen (SS) in dairy cows subjected to one of the three timed AI protocols. Cows (n = 356) were randomly assigned to synchronization with Ovsynch (OVS), Presynch–Ovsynch (PO) or Double‐Ovsynch (DO) and inseminated on Day 77 ± 3 ...
Ebru Karakaya‐Bilen +6 more
openaire +4 more sources
American Association of Bovine Practitioners Conference Proceedings, 2009
The steady decrease in reproductive efficiency of dairy cattle and increase in use of synchronization protocols have generated interest in development of a synchronization program that improves pregnancy rate while decreasing the number of hormone treatments.
McArt, J. A. A. +4 more
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The steady decrease in reproductive efficiency of dairy cattle and increase in use of synchronization protocols have generated interest in development of a synchronization program that improves pregnancy rate while decreasing the number of hormone treatments.
McArt, J. A. A. +4 more
openaire +1 more source
THE INDIAN JOURNAL OF VETERINARY SCIENCES AND BIOTECHNOLOGY, 2019
The present study was conducted to investigate the efficacy of Ovsynch and Ovsynch plus protocol in postpartum (day 60) Sahiwal cows (n=18). Animals were randomly divided into three equal groups, viz., Ovsynch group Ovsynch plus group and Control group. Animals of group I (n = 6) were treated with traditional Ovsynch protocol.
J. P. Lakher +3 more
openaire +1 more source
The present study was conducted to investigate the efficacy of Ovsynch and Ovsynch plus protocol in postpartum (day 60) Sahiwal cows (n=18). Animals were randomly divided into three equal groups, viz., Ovsynch group Ovsynch plus group and Control group. Animals of group I (n = 6) were treated with traditional Ovsynch protocol.
J. P. Lakher +3 more
openaire +1 more source
The Bovine Practitioner, 1997
Ovsynch has been widely reported in the lay press and has understandably created considerable interest among dairy producers seeking better herd reproductive performance and/or elimination of heat detection. This program may produce acceptable results but, in my opinion, it is still too early to predict what results will be on your clients' farms ...
openaire +1 more source
Ovsynch has been widely reported in the lay press and has understandably created considerable interest among dairy producers seeking better herd reproductive performance and/or elimination of heat detection. This program may produce acceptable results but, in my opinion, it is still too early to predict what results will be on your clients' farms ...
openaire +1 more source
Tropical Animal Health and Production, 2008
The aim of this study was to compare the changes in hormonal profiles during ovsynch and ovsynch plus norprolac treatment in Murrah buffalo heifers following timed artificial insemination (TAI) at stressful summer months, through intensive endocrine analysis.
K S, Roy, B S, Prakash
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The aim of this study was to compare the changes in hormonal profiles during ovsynch and ovsynch plus norprolac treatment in Murrah buffalo heifers following timed artificial insemination (TAI) at stressful summer months, through intensive endocrine analysis.
K S, Roy, B S, Prakash
openaire +2 more sources
American Association of Bovine Practitioners Conference Proceedings, 2007
Reproductive efficiency is a major factor contributing to efficiency, profitability and sustainability of dairy farms. Estimates of economic loss due to reproductive inefficiencies range from $1 to 5 billion per year. Given the decreasing trend of conception rates during the past 30 years, it can be anticipated that fertility of lactating dairy cows ...
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Reproductive efficiency is a major factor contributing to efficiency, profitability and sustainability of dairy farms. Estimates of economic loss due to reproductive inefficiencies range from $1 to 5 billion per year. Given the decreasing trend of conception rates during the past 30 years, it can be anticipated that fertility of lactating dairy cows ...
openaire +1 more source
Effect of extending the interval from Presynch to initiation of Ovsynch in a Presynch-Ovsynch protocol on fertility of timed artificial insemination services in lactating dairy cows [PDF]
Journal of Dairy Science, 2016 The specific objective of this study was to determine if increasing the interval between the Presynch and Ovsynch portion of the Presynch-Ovsynch protocol (Presynch: PGF2α-14 d-PGF2α and Ovsynch: GnRH-7 d-PGF2α-56 h-GnRH-16-20 h-timed artificial insemination) from 12 to 14 d would reduce the fertility of lactating dairy cows not detected in estrus ...
Magdalena Masello +2 more
exaly +3 more sources
Efficacy of Ovsynch Program on Reproductive Performance in Dairy Cattle: A Meta-Analysis [PDF]
Journal of Dairy Science, 2005 The efficacy of the Ovsynch program in improving conception and pregnancy rates was compared with untreated controls and other synchrony programs in lactating dairy cows. This meta-analysis examined 71 treatment and control comparisons extracted from 53 research papers.
A R Rabiee, M A Stevenson, A R Rabiee
exaly +3 more sources
Ovsynch Breeding Program for Dairy Cows
The Bovine Practitioner, 2001Heat detection is the single biggest impediment to improved reproductive performance in many dairy herds. Recently, a program for synchronization of ovulation ("Ovsynch") has been developed, which allows for breeding by scheduled artificial insemination.
openaire +1 more source