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Profitability of dairy cows submitted to the first service with the Presynch-Ovsynch or Double-Ovsynch protocol and different duration of the voluntary waiting period.
Stangaferro ML, Wijma RW, Giordano JO. Stangaferro ML, et al. J Dairy Sci. 2019 May;102(5):4546-4562. doi: 10.3168/jds.2018-15567. Epub 2019 Mar 14. J Dairy Sci. 2019. PMID: 30879804
The objective of this study was to compare cash flow and parameters of economic performance for dairy cows submitted to the first service using a combination of insemination at detected estrus and timed AI (TAI) in cows synchronized with the Presynch-Ovsynch (PSOv) protoco …
The objective of this study was to compare cash flow and parameters of economic performance for dairy cows submitted to the first ser …
Evaluation of two dairy herd reproductive performance indicators that are adjusted for voluntary waiting period.
Löf E, Gustafsson H, Emanuelson U. Löf E, et al. Acta Vet Scand. 2012 Jan 30;54(1):5. doi: 10.1186/1751-0147-54-5. Acta Vet Scand. 2012. PMID: 22289201 Free PMC article.
This problem can be alleviated by measuring the proportion of pregnant cows by specific intervals after their calving date or after a fixed time period, such as the voluntary waiting period. The aim of this study was to evaluate two reproductive performance i …
This problem can be alleviated by measuring the proportion of pregnant cows by specific intervals after their calving date or after a fixed …
Voluntary waiting period and adoption of synchronized breeding in dairy herd improvement herds.
Miller RH, Norman HD, Kuhn MT, Clay JS, Hutchison JL. Miller RH, et al. J Dairy Sci. 2007 Mar;90(3):1594-606. doi: 10.3168/jds.S0022-0302(07)71645-4. J Dairy Sci. 2007. PMID: 17297133 Free article.
Voluntary waiting period and adoption of synchronized breeding (ovulation synchronization followed by timed artificial insemination) were characterized from 33 million services of Holsteins and Jerseys in Dairy Herd Improvement herds. ...Over 65% of herds had
Voluntary waiting period and adoption of synchronized breeding (ovulation synchronization followed by timed artificial insemin
Economic performance of lactating dairy cows submitted for first service timed artificial insemination after a voluntary waiting period of 60 or 88 days.
Stangaferro ML, Wijma R, Masello M, Thomas MJ, Giordano JO. Stangaferro ML, et al. J Dairy Sci. 2018 Aug;101(8):7500-7516. doi: 10.3168/jds.2018-14484. Epub 2018 May 24. J Dairy Sci. 2018. PMID: 29803417 Free article.
The objective of this study was to evaluate the economic performance of dairy cows managed with a voluntary waiting period (VWP) of 60 or 88 d. ...As a result, a smaller proportion of multiparous cows calved again and had a subsequent lactation (-6%). The shi …
The objective of this study was to evaluate the economic performance of dairy cows managed with a voluntary waiting per …
Voluntary waiting period management practices in dairy herds participating in a progeny test program.
DeJarnette JM, Sattler CG, Marshall CE, Nebel RL. DeJarnette JM, et al. J Dairy Sci. 2007 Feb;90(2):1073-9. doi: 10.3168/jds.S0022-0302(07)71594-1. J Dairy Sci. 2007. PMID: 17235187 Free article.
A survey was mailed to approximately 4,000 herds participating in a young sire progeny test program to estimate the percentage of herds that selectively alter the voluntary waiting period (VWP) for individual cows or groups of cows. Responses were received from 673 …
A survey was mailed to approximately 4,000 herds participating in a young sire progeny test program to estimate the percentage of herds that …
Analysis of the economically optimal voluntary waiting period for first insemination.
Inchaisri C, Jorritsma R, Vos PL, van der Weijden GC, Hogeveen H. Inchaisri C, et al. J Dairy Sci. 2011 Aug;94(8):3811-23. doi: 10.3168/jds.2010-3790. J Dairy Sci. 2011. PMID: 21787918 Free article.
The voluntary waiting period (VWP) is defined as the time between parturition and the time at which the cow is first eligible for insemination. ...Longer VWP were in particular optimal for the first parity of breeds other than Holstein-Friesian, cows c …
The voluntary waiting period (VWP) is defined as the time between parturition and the time at which the cow is f …
Extending the duration of the voluntary waiting period from 60 to 88 days in cows that received timed artificial insemination after the Double-Ovsynch protocol affected the reproductive performance, herd exit dynamics, and lactation performance of dairy cows.
Stangaferro ML, Wijma R, Masello M, Thomas MJ, Giordano JO. Stangaferro ML, et al. J Dairy Sci. 2018 Jan;101(1):717-735. doi: 10.3168/jds.2017-13046. Epub 2017 Oct 18. J Dairy Sci. 2018. PMID: 29055542 Free article.
This experiment evaluated the reproductive performance, herd exit dynamics, and lactation performance of dairy cows managed with a voluntary waiting period (VWP) of 60 or 88 d. ...In conclusion, data from this experiment highlight the importance of considerin …
This experiment evaluated the reproductive performance, herd exit dynamics, and lactation performance of dairy cows managed with a …
Simulated effects on dairy cattle health of extending the voluntary waiting period with recombinant bovine somatotropin.
Allore HG, Erb HN. Allore HG, et al. Prev Vet Med. 2000 Jul 3;46(1):29-50. doi: 10.1016/s0167-5877(00)00137-9. Prev Vet Med. 2000. PMID: 10854934
Herds that had a voluntary wait period of 150 days (compared to the control herds' voluntary wait period of 50 days) were predicted to have significantly lower rates of metabolic and reproductive disorders and clinical mastitis on both cow-year and milk-yield bases. …
Herds that had a voluntary wait period of 150 days (compared to the control herds' voluntary wait period of 50 days) were pred …
Reproductive performance and herd exit dynamics of lactating dairy cows managed for first service with the Presynch-Ovsynch or Double-Ovsynch protocol and different duration of the voluntary waiting period.
Stangaferro ML, Wijma R, Masello M, Giordano JO. Stangaferro ML, et al. J Dairy Sci. 2018 Feb;101(2):1673-1686. doi: 10.3168/jds.2017-13425. Epub 2017 Dec 14. J Dairy Sci. 2018. PMID: 29248225 Free article.
The objective of this experiment was to evaluate the reproductive performance and herd exit dynamics of dairy cows managed for first service with programs varying in method of submission for insemination and voluntary waiting period (VWP) duration. ...Effects …
The objective of this experiment was to evaluate the reproductive performance and herd exit dynamics of dairy cows managed for first …
Influence of provision of concentrate at milking on voluntary cow traffic in a pasture-based automatic milking system.
Scott VE, Thomson PC, Kerrisk KL, Garcia SC. Scott VE, et al. J Dairy Sci. 2014 Mar;97(3):1481-90. doi: 10.3168/jds.2013-7375. Epub 2014 Jan 17. J Dairy Sci. 2014. PMID: 24440259 Free article.
The present study investigated the effect of providing a small feed reward as an incentive at milking on the premilking voluntary waiting time of cows milked on a prototype robotic rotary in an Australian pasture-based dairy. ...When feed was provided, …
The present study investigated the effect of providing a small feed reward as an incentive at milking on the premilking voluntary
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