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Rumen fill score (RFS) is associated with feed intake; however, it is unknown whether RFS is also related to blood parameters. Therefore, this study investigated the relationship between RFS and energy status during the prepartum period, and their associations with conception at first artificial insemination (AI) after parturition. In 42 multiparous Holstein cows, RFS assessment and blood sampling were carried out twice a week during 3 weeks of the peripartum period. Ovarian cycles until AI were evaluated by measuring milk progesterone levels. Before calving, positive correlations were observed between RFS and total cholesterol, and RFS did not change in pregnant cows at first AI after parturition, whereas in non\u2010pregnant cows, RFS decreased gradually as the calving day approached. After calving, non\u2010pregnant cows showed lower energy status compared with pregnant cows, and some non\u2010pregnant cows showed anovulation and cessation of estrous cycle. In conclusion, RFS during the close\u2010up dry period is related to real\u2010time energy status, and is associated with postpartum energy status and conception at first AI in dairy cows. \u00a9 2016 Japanese Society of Animal Science<\/jats:p>","DOI":"10.1111\/asj.12555","type":"journal-article","created":{"date-parts":[[2016,1,25]],"date-time":"2016-01-25T06:23:11Z","timestamp":1453702991000},"page":"1218-1224","source":"Crossref","is-referenced-by-count":7,"title":["Association of rumen fill score and energy status during the close\u2010up dry period with conception at first artificial insemination in dairy cows"],"prefix":"10.1111","volume":"87","author":[{"given":"Chiho","family":"Kawashima","sequence":"first","affiliation":[{"name":"Field Center of Animal Science and Agriculture  Obihiro Hokkaido Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chihiro","family":"Karaki","sequence":"additional","affiliation":[{"name":"Field Center of Animal Science and Agriculture  Obihiro Hokkaido Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Megumi","family":"Munakata","sequence":"additional","affiliation":[{"name":"Field Center of Animal Science and Agriculture  Obihiro Hokkaido Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Motozumi","family":"Matsui","sequence":"additional","affiliation":[{"name":"Department of Applied Veterinary Medicine  Obihiro Hokkaido Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Takashi","family":"Shimizu","sequence":"additional","affiliation":[{"name":"Graduate School of Animal and Food Hygiene Obihiro University of Agriculture and Veterinary Medicine  Obihiro Hokkaido Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Akio","family":"Miyamoto","sequence":"additional","affiliation":[{"name":"Graduate School of Animal and Food Hygiene Obihiro University of Agriculture and Veterinary Medicine  Obihiro Hokkaido Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Katsuya","family":"Kida","sequence":"additional","affiliation":[{"name":"Field Center of Animal Science and Agriculture  Obihiro Hokkaido Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2016,1,25]]},"reference":[{"key":"e_1_2_6_2_1","first-page":"411","article-title":"Effects of energy balance on follicular development and first ovulation in postpartum dairy cows","volume":"54","author":"Beam SW","year":"1999","journal-title":"Journal of Reproduction and Fertility. 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