{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,3]],"date-time":"2026-09-03T20:45:24Z","timestamp":1788468324496,"version":"build-2803163510"},"reference-count":82,"publisher":"American Dairy Science Association","issue":"5","license":[{"start":{"date-parts":[[2021,5,1]],"date-time":"2021-05-01T00:00:00Z","timestamp":1619827200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2022,7,22]],"date-time":"2022-07-22T00:00:00Z","timestamp":1658448000000},"content-version":"vor","delay-in-days":447,"URL":"http:\/\/www.elsevier.com\/open-access\/userlicense\/1.0\/"}],"content-domain":{"domain":["journalofdairyscience.org","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["Journal of Dairy Science"],"published-print":{"date-parts":[[2021,5]]},"DOI":"10.3168\/jds.2020-19578","type":"journal-article","created":{"date-parts":[[2021,3,2]],"date-time":"2021-03-02T04:09:26Z","timestamp":1614658166000},"page":"6267-6282","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":45,"title":["Factors associated with estrous expression and subsequent fertility in lactating dairy cows using automated activity monitoring"],"prefix":"10.3168","volume":"104","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7839-9299","authenticated-orcid":false,"given":"C.M.","family":"Tippenhauer","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0809-0077","authenticated-orcid":false,"given":"J.-L.","family":"Plenio","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9696-8478","authenticated-orcid":false,"given":"A.M.L.","family":"Madureira","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8169-8900","authenticated-orcid":false,"given":"R.L.A.","family":"Cerri","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1434-7083","authenticated-orcid":false,"given":"W.","family":"Heuwieser","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3937-5777","authenticated-orcid":false,"given":"S.","family":"Borchardt","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1747","reference":[{"key":"10.3168\/jds.2020-19578_bib1","doi-asserted-by":"crossref","first-page":"2977","DOI":"10.3168\/jds.S0022-0302(06)72570-X","article-title":"Relationship of plasma nonesterified fatty acids and walking activity in postpartum dairy cows","volume":"89","author":"Adewuyi","year":"2006","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib2","doi-asserted-by":"crossref","first-page":"18","DOI":"10.1016\/j.theriogenology.2016.09.043","article-title":"High somatic cell counts and changes in milk fat and protein contents around insemination are negatively associated with conception in dairy cows","volume":"88","author":"Albaaj","year":"2017","journal-title":"Theriogenology"},{"key":"10.3168\/jds.2020-19578_bib3","doi-asserted-by":"crossref","first-page":"2738","DOI":"10.3168\/jds.S0022-0302(94)77216-7","article-title":"Endocrine and neural control of estrus in dairy cows","volume":"77","author":"Allrich","year":"1994","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib4","doi-asserted-by":"crossref","first-page":"1666","DOI":"10.3168\/jds.2013-7405","article-title":"The relationship between activity clusters detected by an automatic activity monitor and endocrine changes during the periestrous period in lactating dairy cows","volume":"98","author":"Aungier","year":"2015","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib5","doi-asserted-by":"crossref","first-page":"2452","DOI":"10.3168\/jds.2011-4653","article-title":"Effects of management and health on the use of activity monitoring for estrus detection in dairy cows","volume":"95","author":"Aungier","year":"2012","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib6","doi-asserted-by":"crossref","first-page":"411","DOI":"10.1136\/vr.102776","article-title":"Effect of signs of oestrus, disease stressors and cow activity on pregnancy rate following artificial insemination","volume":"176","author":"Bijker","year":"2015","journal-title":"Vet. Rec."},{"key":"10.3168\/jds.2020-19578_bib7","doi-asserted-by":"crossref","first-page":"2195","DOI":"10.3168\/jds.S0022-0302(86)80653-1","article-title":"Determinants of estrous behavior in lactating Holstein cows","volume":"69","author":"Britt","year":"1986","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib8","doi-asserted-by":"crossref","first-page":"2964","DOI":"10.3168\/jds.S0022-0302(97)76262-3","article-title":"A statistical evaluation of animal and nutritional factors influencing concentrations of milk urea nitrogen","volume":"80","author":"Broderick","year":"1997","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib9","doi-asserted-by":"crossref","first-page":"355","DOI":"10.1530\/rep.0.1230355","article-title":"Characterization and biological roles of oviduct-specific, oestrogen dependent glycoprotein","volume":"123","author":"Buhi","year":"2002","journal-title":"Reproduction"},{"key":"10.3168\/jds.2020-19578_bib10","doi-asserted-by":"crossref","first-page":"5005","DOI":"10.3168\/jds.2016-12246","article-title":"Integrating an automated activity monitor into an artificial insemination program and the associated risk factors affecting reproductive performance of dairy cows","volume":"100","author":"Burnett","year":"2017","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib11","doi-asserted-by":"crossref","first-page":"11310","DOI":"10.3168\/jds.2018-15151","article-title":"Effect of estrous expression on timing and failure of ovulation of Holstein dairy cows using automated activity monitors","volume":"101","author":"Burnett","year":"2018","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib12","doi-asserted-by":"crossref","first-page":"211","DOI":"10.1016\/S0301-6226(03)00112-X","article-title":"Energy balance relationships with follicular development, ovulation and fertility in postpartum dairy cows","volume":"83","author":"Butler","year":"2003","journal-title":"Livest. Prod. Sci."},{"key":"10.3168\/jds.2020-19578_bib13","doi-asserted-by":"crossref","DOI":"10.3168\/jds.2020-18207","article-title":"Associations between genomic merit for daughter pregnancy rate of Holstein cows and metabolites postpartum and estrus characteristics","author":"Chebel","year":"2020","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib14","doi-asserted-by":"crossref","first-page":"645","DOI":"10.1016\/j.theriogenology.2015.10.002","article-title":"Expression of estrus modifies the gene expression profile in reproductive tissues on Day 19 of gestation in beef cows","volume":"85","author":"Davoodi","year":"2016","journal-title":"Theriogenology"},{"key":"10.3168\/jds.2020-19578_bib15","doi-asserted-by":"crossref","first-page":"1139","DOI":"10.1016\/S0093-691X(03)00126-2","article-title":"Heat stress and seasonal effects on reproduction in the dairy cow-A review","volume":"60","author":"De Rensis","year":"2003","journal-title":"Theriogenology"},{"key":"10.3168\/jds.2020-19578_bib16","series-title":"Veterinary Epidemiologic Research","author":"Dohoo","year":"2009"},{"key":"10.3168\/jds.2020-19578_bib17","doi-asserted-by":"crossref","first-page":"53","DOI":"10.1016\/S0167-5877(98)00139-1","article-title":"Factors affecting milk urea nitrogen and protein concentrations in Quebec dairy cows","volume":"39","author":"Eicher","year":"1999","journal-title":"Prev. Vet. Med."},{"key":"10.3168\/jds.2020-19578_bib18","doi-asserted-by":"crossref","first-page":"155","DOI":"10.1016\/j.anireprosci.2009.08.009","article-title":"Probability of pregnancy as affected by oestrus number and days to first oestrus in dairy cows of three breeds and parities","volume":"118","author":"Friggens","year":"2010","journal-title":"Anim. Reprod. Sci."},{"key":"10.3168\/jds.2020-19578_bib19","doi-asserted-by":"crossref","first-page":"3791","DOI":"10.3168\/jds.2014-8997","article-title":"The association between occurrence and severity of subclinical and clinical mastitis on pregnancies per artificial insemination at first service of Holstein cows","volume":"98","author":"Fuenzalida","year":"2015","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib20","doi-asserted-by":"crossref","first-page":"53","DOI":"10.1111\/j.1439-0531.2007.00854.x","article-title":"Factors influencing pregnancy rate and late embryonic loss in dairy cattle","volume":"43","author":"G\u00e1bor","year":"2008","journal-title":"Reprod. Domest. Anim."},{"key":"10.3168\/jds.2020-19578_bib21","doi-asserted-by":"crossref","first-page":"3508","DOI":"10.2527\/2004.82123508x","article-title":"Effect of addition of a progesterone intravaginal insert to a timed insemination protocol using estradiol cypionate on ovulation rate, pregnancy rate, and late embryonic loss in lactating dairy cows","volume":"82","author":"Galv\u00e3o","year":"2004","journal-title":"J. Anim. Sci."},{"key":"10.3168\/jds.2020-19578_bib22","doi-asserted-by":"crossref","first-page":"1397","DOI":"10.3168\/jds.S0022-0302(01)70171-3","article-title":"Milk urea testing as a tool to monitor reproductive performance in Ontario dairy herds","volume":"84","author":"Godden","year":"2001","journal-title":"J. Dairy Sci."},{"issue":"Suppl 2","key":"10.3168\/jds.2020-19578_bib23","doi-asserted-by":"crossref","first-page":"36","DOI":"10.2527\/1997.77suppl_236x","article-title":"Strategies for managing reproduction in the heat stressed dairy cow","volume":"77","author":"Hansen","year":"1997","journal-title":"J. Anim. Sci."},{"key":"10.3168\/jds.2020-19578_bib24","doi-asserted-by":"crossref","first-page":"2422","DOI":"10.3168\/jds.S0022-0302(05)72920-9","article-title":"Effects of induced clinical mastitis during preovulation on endocrine and follicular function","volume":"88","author":"Hockett","year":"2005","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib25","doi-asserted-by":"crossref","first-page":"1001","DOI":"10.3168\/jds.S0022-0302(04)73245-2","article-title":"Relationships between milk urea and production, nutrition, and fertility traits in Israeli dairy herds","volume":"87","author":"Hojman","year":"2004","journal-title":"J. Dairy Sci."},{"issue":"Suppl. 1","key":"10.3168\/jds.2020-19578_bib26","first-page":"243","article-title":"Reproductive and metabolic responses of dairy cattle to the level and degradability of dietary protein","volume":"69","author":"Holtz","year":"1986","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib27","doi-asserted-by":"crossref","first-page":"3683","DOI":"10.3168\/jds.2011-4629","article-title":"Associations between udder health and reproductive performance in United Kingdom dairy cows","volume":"95","author":"Hudson","year":"2012","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib28","doi-asserted-by":"crossref","first-page":"4372","DOI":"10.3168\/jds.2008-1236","article-title":"Genetic and phenotypic relationships among milk urea nitrogen, fertility, and milk yield in Holstein cows","volume":"91","author":"K\u00f6nig","year":"2008","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib29","first-page":"90","article-title":"Relation between the somatic cell count and the success of first insemination in East Frisian dairy herds on the basis of logistic models analysis","volume":"78","author":"K\u00f6nig","year":"2006","journal-title":"Zuchtungskunde"},{"key":"10.3168\/jds.2020-19578_bib30","doi-asserted-by":"crossref","first-page":"4538","DOI":"10.3168\/jds.2011-4293","article-title":"Association of conception rate with pattern and level of somatic cell count elevation relative to time of insemination in dairy cows","volume":"94","author":"Lavon","year":"2011","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib31","doi-asserted-by":"crossref","first-page":"911","DOI":"10.3168\/jds.2009-2112","article-title":"Naturally occurring mastitis effects on timing of ovulation, steroid and gonadotrophic hormone concentrations, and follicular and luteal growth in cows","volume":"93","author":"Lavon","year":"2010","journal-title":"J. Dairy Sci."},{"issue":"S","key":"10.3168\/jds.2020-19578_bib32","doi-asserted-by":"crossref","first-page":"S1","DOI":"10.1262\/jrd.1056S01","article-title":"Assessing the association of the level of milk production with reproductive performance in dairy cattle","volume":"56","author":"LeBlanc","year":"2010","journal-title":"J. Reprod. Dev."},{"key":"10.3168\/jds.2020-19578_bib33","doi-asserted-by":"crossref","first-page":"1638","DOI":"10.3168\/jds.2017-13505","article-title":"Estrous detection intensity and accuracy and optimal timing of insemination with automated activity monitors for dairy cows","volume":"101","author":"LeRoy","year":"2018","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib34","doi-asserted-by":"crossref","first-page":"2071","DOI":"10.3168\/jds.2012-5874","article-title":"Factors influencing the chance of cows being pregnant 30 days after the herd voluntary waiting period","volume":"97","author":"L\u00f6f","year":"2014","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib35","doi-asserted-by":"crossref","first-page":"209","DOI":"10.1016\/j.anireprosci.2003.10.009","article-title":"Relationship between level of milk production and estrous behavior of lactating dairy cows","volume":"81","author":"Lopez","year":"2004","journal-title":"Anim. Reprod. Sci."},{"key":"10.3168\/jds.2020-19578_bib36","doi-asserted-by":"crossref","first-page":"1419","DOI":"10.1016\/j.theriogenology.2004.07.007","article-title":"Walking activity at estrus and subsequent fertility in dairy cows","volume":"63","author":"L\u00f3pez-Gatius","year":"2005","journal-title":"Theriogenology"},{"key":"10.3168\/jds.2020-19578_bib37","doi-asserted-by":"crossref","first-page":"1277","DOI":"10.3168\/jds.S0022-0302(01)70158-0","article-title":"Reproductive loss in high producing dairy cattle:Where will it end?","volume":"84","author":"Lucy","year":"2001","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib38","doi-asserted-by":"crossref","first-page":"7003","DOI":"10.3168\/jds.2015-9672","article-title":"Factors affecting expression of estrus measured by activity monitors and conception risk of lactating dairy cows","volume":"98","author":"Madureira","year":"2015","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib39","doi-asserted-by":"crossref","first-page":"3598","DOI":"10.3168\/jds.2018-15129","article-title":"Intensity of estrus following an estradiol-progesterone-based ovulation synchronization protocol influences fertility outcomes","volume":"102","author":"Madureira","year":"2019","journal-title":"J. Dairy Sci."},{"issue":"Suppl. 2","key":"10.3168\/jds.2020-19578_bib40","first-page":"874","article-title":"Factors affecting expression of estrus measured by activity monitors on ovarian dynamics and conception risk in Holstein cows","volume":"98","author":"Madureira","year":"2015","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib41","doi-asserted-by":"crossref","first-page":"2543","DOI":"10.3168\/jds.S0022-0302(01)74706-6","article-title":"Relationship of somatic cell score with fertility measures","volume":"84","author":"Miller","year":"2001","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib42","doi-asserted-by":"crossref","first-page":"139","DOI":"10.1016\/j.cvfa.2018.10.006","article-title":"Ventilation systems for adult dairy cattle","volume":"35","author":"Mondaca","year":"2019","journal-title":"Vet. Clin. North Am. Food Anim. Pract."},{"key":"10.3168\/jds.2020-19578_bib43","doi-asserted-by":"crossref","first-page":"20","DOI":"10.1016\/j.anireprosci.2013.07.004","article-title":"Effects of high somatic cell counts in milk on reproductive hormones and oestrus behaviour in dairy cows with special reference to those with concurrent lameness","volume":"141","author":"Morris","year":"2013","journal-title":"Anim. Reprod. Sci."},{"key":"10.3168\/jds.2020-19578_bib44","doi-asserted-by":"crossref","first-page":"5665","DOI":"10.3168\/jds.2010-3916","article-title":"Genetic analysis of milk urea nitrogen and relationships with yield and fertility across lactation","volume":"94","author":"Mucha","year":"2011","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib45","doi-asserted-by":"crossref","first-page":"799","DOI":"10.3168\/jds.2018-15115","article-title":"Extended lactation in high-yielding dairy cows. I. Effects on reproductive measurements","volume":"102","author":"Niozas","year":"2019","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib46","series-title":"A Guide to Environmental Research on Animals","author":"NRC","year":"1971"},{"key":"10.3168\/jds.2020-19578_bib47","doi-asserted-by":"crossref","first-page":"148","DOI":"10.3168\/jds.2014-8025","article-title":"Feeding characteristics and rumination time of dairy cows around estrus","volume":"98","author":"Pahl","year":"2015","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib48","doi-asserted-by":"crossref","first-page":"187","DOI":"10.1111\/j.1439-0442.1992.tb00172.x","article-title":"The effect of additional feeding on the fertility of high-yielding dairy cows","volume":"39","author":"Pehrson","year":"1992","journal-title":"JZentralbl Veterinarmed A."},{"key":"10.3168\/jds.2020-19578_bib49","doi-asserted-by":"crossref","first-page":"59","DOI":"10.1016\/j.anireprosci.2004.10.003","article-title":"Comparison of three estrus detection systems during summer in a large commercial dairy herd","volume":"87","author":"Peralta","year":"2005","journal-title":"Anim. Reprod. Sci."},{"key":"10.3168\/jds.2020-19578_bib50","doi-asserted-by":"crossref","first-page":"2237","DOI":"10.3168\/jds.2015-9903","article-title":"Expression of estrus improves fertility and decreases pregnancy losses in lactating dairy cows that receive artificial insemination or embryo transfer","volume":"99","author":"Pereira","year":"2016","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib51","doi-asserted-by":"crossref","first-page":"6647","DOI":"10.3168\/jds.2019-17867","article-title":"Associations of reproductive indices with fertility outcomes, milk yield, and survival in Holstein cows","volume":"103","author":"Pinedo","year":"2020","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib52","doi-asserted-by":"crossref","first-page":"8590","DOI":"10.3168\/jds.2017-12656","article-title":"Association between ambient temperature and humidity, vaginal temperature, and automatic activity monitoring on induced estrus in lactating cows","volume":"100","author":"Polsky","year":"2017","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib53","doi-asserted-by":"crossref","first-page":"482","DOI":"10.3168\/jds.S0022-0302(01)74498-0","article-title":"Association between milk urea nitrogen and fertility in Ohio dairy cows","volume":"84","author":"Rajala-Schultz","year":"2001","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib54","doi-asserted-by":"crossref","first-page":"219","DOI":"10.1016\/j.livsci.2014.10.013","article-title":"Simultaneous analysis of activity and rumination time, based on collar-mounted sensor technology, of dairy cows over the peri-estrus period","volume":"170","author":"Reith","year":"2014","journal-title":"Livest. Sci."},{"key":"10.3168\/jds.2020-19578_bib55","doi-asserted-by":"crossref","first-page":"6416","DOI":"10.3168\/jds.2012-5316","article-title":"Relationship between daily rumination time and estrus of dairy cows","volume":"95","author":"Reith","year":"2012","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib56","doi-asserted-by":"crossref","first-page":"748","DOI":"10.1017\/S1751731114000494","article-title":"Influence of estrus on dry matter intake, water intake, and BW of dairy cows","volume":"8","author":"Reith","year":"2014","journal-title":"Animal"},{"key":"10.3168\/jds.2020-19578_bib57","doi-asserted-by":"crossref","first-page":"889","DOI":"10.3168\/jds.2014-8366","article-title":"Variation in the interservice intervals of dairy cows in the United Kingdom","volume":"98","author":"Remnant","year":"2015","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib58","doi-asserted-by":"crossref","first-page":"1500","DOI":"10.3168\/jds.2009-2489","article-title":"Effect of bovine somatotropin (500 mg) administered at ten-day intervals on ovulatory responses, expression of estrus, and fertility in dairy cows","volume":"93","author":"Rivera","year":"2010","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib59","doi-asserted-by":"crossref","first-page":"327","DOI":"10.1016\/j.theriogenology.2010.02.016","article-title":"When is a cow in estrus? Clinical and practical aspects","volume":"74","author":"Roelofs","year":"2010","journal-title":"Theriogenology"},{"key":"10.3168\/jds.2020-19578_bib60","doi-asserted-by":"crossref","first-page":"83","DOI":"10.1530\/jrf.0.1200083","article-title":"Immediate and delayed effects of heat stress on follicular development and its association with plasma FSH and Inhibin concentration in cows","volume":"120","author":"Roth","year":"2000","journal-title":"J. Reprod. Fertil."},{"key":"10.3168\/jds.2020-19578_bib61","doi-asserted-by":"crossref","first-page":"487","DOI":"10.1017\/S1357729800051845","article-title":"Declining fertility in dairy cattle: changes in traditional and endocrine parameters of fertility","volume":"70","author":"Royal","year":"2000","journal-title":"Anim. Sci."},{"key":"10.3168\/jds.2020-19578_bib62","doi-asserted-by":"crossref","first-page":"2831","DOI":"10.3168\/jds.S0022-0302(02)74370-1","article-title":"High feed intake increases liver blood flow and metabolism of progesterone and estradiol-17\u03b2 in dairy cattle","volume":"85","author":"Sangsritavong","year":"2002","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib63","first-page":"387","article-title":"Applying nutrition and physiology to improve reproduction in dairy cattle","volume":"67","author":"Santos","year":"2010","journal-title":"Soc. Reprod. Fertil. Suppl."},{"key":"10.3168\/jds.2020-19578_bib64","doi-asserted-by":"crossref","first-page":"1407","DOI":"10.3168\/jds.S0022-0302(01)70172-5","article-title":"Influence of subclinical mastitis during early lactation on reproductive parameters","volume":"84","author":"Schrick","year":"2001","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib65","doi-asserted-by":"crossref","first-page":"1050","DOI":"10.1016\/j.theriogenology.2014.01.029","article-title":"Impact of heat stress on conception rate of dairy cows in the moderate climate considering different temperature-humidity index thresholds, periods relative to breeding, and heat load indices","volume":"81","author":"Sch\u00fcller","year":"2014","journal-title":"Theriogenology"},{"key":"10.3168\/jds.2020-19578_bib66","doi-asserted-by":"crossref","first-page":"48","DOI":"10.1016\/j.theriogenology.2017.07.004","article-title":"Impact of heat stress on estrus expression and follicle size in estrus under field conditions in dairy cows","volume":"102","author":"Sch\u00fcller","year":"2017","journal-title":"Theriogenology"},{"key":"10.3168\/jds.2020-19578_bib67","doi-asserted-by":"crossref","first-page":"7500","DOI":"10.3168\/jds.2018-14484","article-title":"Economic performance of lactating dairy cows submitted for first service timed artificial insemination after a voluntary waiting period of 60 or 88 days","volume":"101","author":"Stangaferro","year":"2018","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib68","doi-asserted-by":"crossref","first-page":"4296","DOI":"10.3168\/jds.2013-7873","article-title":"Ovulation timing and conception risk after automated activity monitoring in lactating dairy cows","volume":"97","author":"Stevenson","year":"2014","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib69","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.anireprosci.2003.08.009","article-title":"Use of Ovsynch in dairy herds: Differences between primiparous and multiparous cows","volume":"81","author":"Tenhagen","year":"2004","journal-title":"Anim. Reprod. Sci."},{"key":"10.3168\/jds.2020-19578_bib70","doi-asserted-by":"crossref","first-page":"1527","DOI":"10.1016\/S0093-691X(03)00141-9","article-title":"Influence of stage of lactation and milk production on conception rates after timed artificial insemination following Ovsynch","volume":"60","author":"Tenhagen","year":"2003","journal-title":"Theriogenology"},{"key":"10.3168\/jds.2020-19578_bib71","first-page":"115","article-title":"Experiences with creating a precision dairy farming ontology (DFO) and a knowledge graph for the data integration platform in agriOpenLink","volume":"6","author":"Tomic","year":"2015","journal-title":"Agr\u00e1rinform. F."},{"key":"10.3168\/jds.2020-19578_bib72","doi-asserted-by":"crossref","first-page":"7115","DOI":"10.3168\/jds.2012-5639","article-title":"Assessment of an accelerometer system for detection of estrus and treatment with gonadotropin-releasing hormone at the time of insemination in lactating dairy cows","volume":"95","author":"Valenza","year":"2012","journal-title":"J. Dairy Sci."},{"issue":"Suppl. 1","key":"10.3168\/jds.2020-19578_bib73","first-page":"79","article-title":"Possible causes for the diminished expression of estrus behaviour","volume":"30","author":"Van Eerdenburg","year":"2008","journal-title":"Vet. Q."},{"key":"10.3168\/jds.2020-19578_bib74","doi-asserted-by":"crossref","first-page":"1150","DOI":"10.3168\/jds.S0022-0302(02)74177-5","article-title":"The relationship between estrous behavioral score and time of ovulation in dairy cattle","volume":"85","author":"Van Eerdenburg","year":"2002","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib75","doi-asserted-by":"crossref","first-page":"57","DOI":"10.1016\/0168-1591(96)01068-4","article-title":"Sexual activities and oestrus detection in lactating Holstein cows","volume":"50","author":"Van Vliet","year":"1996","journal-title":"Appl. Anim. Behav. Sci."},{"key":"10.3168\/jds.2020-19578_bib76","doi-asserted-by":"crossref","first-page":"6624","DOI":"10.3168\/jds.2018-15205","article-title":"Genomic merit for reproductive traits. I: Estrous characteristics and fertility in Holstein heifers","volume":"102","author":"Veronese","year":"2019","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib77","doi-asserted-by":"crossref","first-page":"190","DOI":"10.1095\/biolreprod.107.060558","article-title":"Polyunsaturated fatty acids in male and female reproduction","volume":"77","author":"Wathes","year":"2007","journal-title":"Biol. Reprod."},{"key":"10.3168\/jds.2020-19578_bib78","doi-asserted-by":"crossref","first-page":"3492","DOI":"10.3168\/jds.S0022-0302(04)73484-0","article-title":"Protein level for alfalfa and corn silage-based diets: II. Nitrogen balance and manure characteristics","volume":"87","author":"Wattiaux","year":"2004","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib79","doi-asserted-by":"crossref","first-page":"17","DOI":"10.1016\/j.theriogenology.2005.10.003","article-title":"Changes in reproductive physiology of lactating dairy cows due to elevated steroid metabolism","volume":"65","author":"Wiltbank","year":"2006","journal-title":"Theriogenology"},{"key":"10.3168\/jds.2020-19578_bib80","doi-asserted-by":"crossref","first-page":"754","DOI":"10.1017\/S1751731114000342","article-title":"Central genomic regulation of the expression of oestrous behaviour in dairy cows: A review","volume":"8","author":"Woelders","year":"2014","journal-title":"Animal"},{"key":"10.3168\/jds.2020-19578_bib81","doi-asserted-by":"crossref","first-page":"2462","DOI":"10.3168\/jds.S0022-0302(03)73840-5","article-title":"Estimation of genetic parameters for concentrations of milk urea nitrogen","volume":"86","author":"Wood","year":"2003","journal-title":"J. Dairy Sci."},{"key":"10.3168\/jds.2020-19578_bib82","doi-asserted-by":"crossref","first-page":"1943","DOI":"10.1016\/j.theriogenology.2006.05.013","article-title":"Factors affecting walking activity at estrus during postpartum period and subsequent fertility in dairy cows","volume":"66","author":"Y\u00e1niz","year":"2006","journal-title":"Theriogenology"}],"container-title":["Journal of Dairy Science"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0022030221002253?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0022030221002253?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0022030221002253","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,11,8]],"date-time":"2024-11-08T22:01:21Z","timestamp":1731103281000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0022030221002253"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,5]]},"references-count":82,"journal-issue":{"issue":"5","published-print":{"date-parts":[[2021,5]]}},"alternative-id":["S0022030221002253"],"URL":"https:\/\/doi.org\/10.3168\/jds.2020-19578","relation":{},"ISSN":["0022-0302"],"issn-type":[{"value":"0022-0302","type":"print"}],"subject":[],"published":{"date-parts":[[2021,5]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Factors associated with estrous expression and subsequent fertility in lactating dairy cows using automated activity monitoring","name":"articletitle","label":"Article Title"},{"value":"Journal of Dairy Science","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.3168\/jds.2020-19578","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a9 2021 American Dairy Science Association\u00ae.","name":"copyright","label":"Copyright"}]}}