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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1921 1
1923 1
1926 1
1965 1
1966 1
1968 2
1969 2
1970 2
1971 3
1972 1
1973 5
1974 4
1975 13
1976 21
1977 11
1978 15
1979 14
1980 17
1981 11
1982 25
1983 26
1984 35
1985 40
1986 34
1987 30
1988 38
1989 48
1990 32
1991 26
1992 19
1993 35
1994 27
1995 21
1996 32
1997 28
1998 42
1999 38
2000 48
2001 52
2002 44
2003 50
2004 65
2005 90
2006 109
2007 108
2008 95
2009 87
2010 108
2011 109
2012 110
2013 110
2014 112
2015 108
2016 112
2017 123
2018 134
2019 128
2020 128
2021 97
2022 84
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2,609 results
Results by year
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Page 1
LRH-A3 and HCG increase pregnancy rate during timed artificial insemination in dairy cows.
Zheng P, Huang H, Li X, Huang F, Adeniran SO, Wang Z, Feng R, Zhang G. Zheng P, et al. Anim Sci J. 2021 Jan;92(1):e13549. doi: 10.1111/asj.13549. Anim Sci J. 2021. PMID: 33763962
In experiment 3, endometrial cells were treated with HCG. The results showed that TAI did not affect the pregnancy rate, while LRH-A3 and HCG increased the pregnancy rate of the cow. ...This study provided a plan for the use of LRH-A3 and HCG to increa …
In experiment 3, endometrial cells were treated with HCG. The results showed that TAI did not affect the pregnancy rate, while …
Administration of a single dose of 300 IU of human chorionic gonadotropin seven days after the onset of estrus improves pregnancy rate in dairy goats by an unknown mechanism.
Côrtes LR, Souza-Fabjan JMG, Dias DS, Martins BB, Maia ALRS, Veiga MO, Arashiro EKN, Brandão FZ, Oliveira MEF, Bartlewski PM, Fonseca JF. Côrtes LR, et al. Domest Anim Endocrinol. 2021 Jan;74:106579. doi: 10.1016/j.domaniend.2020.106579. Epub 2020 Oct 9. Domest Anim Endocrinol. 2021. PMID: 33161234
This study examined the effects of exogenous hCG administration on ovarian function and pregnancy rates in estrous-induced dairy goats during the transition into the breeding season. ...Transrectal ovarian ultrasonography (B-mode and color Doppler) was performed on …
This study examined the effects of exogenous hCG administration on ovarian function and pregnancy rates in estrous-induced dairy
Fertility and the transition dairy cow.
Roche JR, Burke CR, Crookenden MA, Heiser A, Loor JL, Meier S, Mitchell MD, Phyn CVC, Turner SA. Roche JR, et al. Reprod Fertil Dev. 2017 Jan;30(1):85-100. doi: 10.1071/RD17412. Reprod Fertil Dev. 2017. PMID: 29539306 Review.
The transition from pregnancy to lactation (i.e. the transition period) is a time of significant metabolic challenge, with a several-fold increase in a cow's requirement for energy, protein and minerals within days of calving. ...In this paper we integrate recent re …
The transition from pregnancy to lactation (i.e. the transition period) is a time of significant metabolic challenge, with a several- …
Relationship between sire predicted transmitting ability for daughter pregnancy rate and daughter's reproductive performance and milk production in Japanese dairy herds.
Koyama K, Takahashi T. Koyama K, et al. J Reprod Dev. 2020 Oct 13;66(5):445-452. doi: 10.1262/jrd.2020-048. Epub 2020 Jun 28. J Reprod Dev. 2020. PMID: 32595197 Free PMC article.
Modern genetic improvement in dairy cattle is directed towards improvement of fertility; however, reproduction traits generally exhibit a genetic antagonism with milk yield. Herein, we aimed to clarify the effects of sire predicted transmitting ability (PTA) for daughter …
Modern genetic improvement in dairy cattle is directed towards improvement of fertility; however, reproduction traits generally exhib …
Pregnancy rate in dairy cows treated with progesterone for six days during estrus synchronization with PGF2α.
Orozco M, Gutiérrez CG, López R, Aguilar C, Roque C, Hernández-Cerón J. Orozco M, et al. Anim Reprod Sci. 2016 Mar;166:128-32. doi: 10.1016/j.anireprosci.2016.01.012. Epub 2016 Jan 12. Anim Reprod Sci. 2016. PMID: 26833055 Clinical Trial.
The present study evaluated the effect of progesterone supplementation during a double PGF2alpha injection synchronization protocol on pregnancy per artificial insemination (P/AI) and on the incidence of twin births. Seven hundred and eighty three dairy cows were sy …
The present study evaluated the effect of progesterone supplementation during a double PGF2alpha injection synchronization protocol on pr
Investigating conception rate for beef service sires bred to dairy cows and heifers.
McWhorter TM, Hutchison JL, Norman HD, Cole JB, Fok GC, Lourenco DAL, VanRaden PM. McWhorter TM, et al. J Dairy Sci. 2020 Nov;103(11):10374-10382. doi: 10.3168/jds.2020-18399. Epub 2020 Sep 28. J Dairy Sci. 2020. PMID: 32896403 Free article.
Sire conception rate (SCR) is a phenotypic evaluation of service sire fertility that is routinely calculated for US dairy bulls. A total of 268,174 breedings were available, which included 36 recognized beef breeds and 7 dairy breeds. Most of the beef-on-d
Sire conception rate (SCR) is a phenotypic evaluation of service sire fertility that is routinely calculated for US dairy bull …
The effect of prostaglandin F(2α) administration at the time of insemination on the pregnancy rate of dairy cows.
Gabriel HG, Wallenhorst S, Dietrich E, Holtz W. Gabriel HG, et al. Anim Reprod Sci. 2011 Jan;123(1-2):1-4. doi: 10.1016/j.anireprosci.2010.11.010. Epub 2010 Nov 26. Anim Reprod Sci. 2011. PMID: 21167663 Clinical Trial.
This paper addresses the question whether the pregnancy rate of dairy cows and heifers may be affected by administering prostaglandin F(2alpha) at the time of artificial insemination. A field trial involving 1031 dairy cows and heifers distributed to a …
This paper addresses the question whether the pregnancy rate of dairy cows and heifers may be affected by administering …
Factors influencing pregnancy rate and late embryonic loss in dairy cattle.
Gábor G, Tóth F, Ozsvári L, Abonyi-Tóth Z, Sasser R. Gábor G, et al. Reprod Domest Anim. 2008 Feb;43(1):53-8. doi: 10.1111/j.1439-0531.2007.00854.x. Reprod Domest Anim. 2008. PMID: 18199259
This trial was conducted on three Hungarian dairy farms between March 2003 and April 2004. The aims of this study were to examine the effect of milk production and milk contents, the day after calving (DAC) and the sire for the pregnancy rate (PR) and late em …
This trial was conducted on three Hungarian dairy farms between March 2003 and April 2004. The aims of this study were to examine the …
Age at puberty and pregnancy rate in beef heifer genotypes with contrasting nutritional intake from 8 to 13 months of age.
Heslin J, Kenny DA, Kelly AK, McGee M. Heslin J, et al. Anim Reprod Sci. 2020 Jan;212:106221. doi: 10.1016/j.anireprosci.2019.106221. Epub 2019 Nov 28. Anim Reprod Sci. 2020. PMID: 31864491

Compared to heifers fed the MOD intake diet, heifers fed the HI intake diet were younger (P < 0.001) and had greater bodyweights (P < 0.001) at puberty but did not have a greater 6- (P = 0.41) or 12- (P = 0.32) week pregnancy rate. Dairy-bred heifers we

Compared to heifers fed the MOD intake diet, heifers fed the HI intake diet were younger (P < 0.001) and had greater bodyweights (P <

2,609 results