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Year Number of Results
1997 1
1998 1
2000 4
2002 1
2004 3
2005 6
2006 2
2007 4
2010 2
2011 1
2012 1
2013 2
2014 4
2015 3
2016 4
2017 6
2018 5
2019 4
2020 1
2021 2
2022 1
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Page 1
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 …
Effects of extended voluntary waiting period from calving until first insemination on body condition, milk yield, and lactation persistency.
Burgers EEA, Kok A, Goselink RMA, Hogeveen H, Kemp B, van Knegsel ATM. Burgers EEA, et al. J Dairy Sci. 2021 Jul;104(7):8009-8022. doi: 10.3168/jds.2020-19914. Epub 2021 Apr 15. J Dairy Sci. 2021. PMID: 33865580 Free article.
This study first investigated the effects of 3 different voluntary waiting periods (VWP) from calving until first insemination on body weight, body condition, milk yield, and lactation persistency. Second, individual cow characteristics in early lactation were ident …
This study first investigated the effects of 3 different voluntary waiting periods (VWP) from calving until first insemination …
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 …
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 …
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 …
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 Free article.
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 …
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 …
Expression and detection of estrus in dairy cows: the role of new technologies.
Fricke PM, Carvalho PD, Giordano JO, Valenza A, Lopes G Jr, Amundson MC. Fricke PM, et al. Animal. 2014 May;8 Suppl 1:134-43. doi: 10.1017/S1751731114000299. Epub 2014 Mar 28. Animal. 2014. PMID: 24680286 Free article. Review.
Despite the widespread adoption of hormonal synchronization protocols that allow for timed artificial insemination (AI), detection of estrus plays an important role in the reproductive management program on most dairies in the United States. Increased physical activity is …
Despite the widespread adoption of hormonal synchronization protocols that allow for timed artificial insemination (AI), detection of estrus …
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 …
50 results