{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,14]],"date-time":"2025-05-14T01:56:42Z","timestamp":1747187802595,"version":"3.40.5"},"reference-count":16,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2019,6,7]],"date-time":"2019-06-07T00:00:00Z","timestamp":1559865600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Reprod Domestic Animals"],"published-print":{"date-parts":[[2019,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The aim of this study was to develop a resynchronization strategy before the return of oestrus in cows diagnosed as not pregnant after fixed\u2010time artificial insemination (TAI). A total of 839 cows, approximately 45\u00a0days post\u2010partum, were synchronized using TAI. On day 0, intravaginal progesterone\u2010releasing devices were inserted and 2\u00a0mg of oestradiol benzoate was administered. Eight days later (D8), the progesterone\u2010releasing devices were removed and oestradiol cypionate (0.5\u00a0mg, eCG [300\u00a0IU]) and prostaglandin (7.5\u00a0mg) were administered. All cows were inseminated between 48 and 56\u00a0hr after device removal (D10). Thirty days after TAI, cows that were not diagnosed as pregnant by ultrasound were immediately resynchronized and again inseminated at a fixed time. The hormonal protocol used in the first and second rounds of TAI was the same. The pregnancy rate after the first TAI was 52%, and after the second TAI, it was 49%. The increase in the total pregnancy rate (synchronization\u00a0+\u00a0second oestrous synchronization) compared to a single synchronization was 23.5%. In conclusion, resynchronization of oestrus and ovulation in zebu cows that had previously undergone TAI protocols is effective in increasing the reproductive efficiency.<\/jats:p>","DOI":"10.1111\/rda.13468","type":"journal-article","created":{"date-parts":[[2019,5,16]],"date-time":"2019-05-16T18:20:10Z","timestamp":1558030810000},"page":"1050-1053","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Effect of oestrous resynchronization on the reproductive efficiency of zebu cows"],"prefix":"10.1111","volume":"54","author":[{"given":"Nilson Shonholzer","family":"Faleiro","sequence":"first","affiliation":[{"name":"Centro Universit\u00e1rio da Amaz\u00f4nia Santar\u00e9m Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kedson Alessandri Lobo","family":"Neves","sequence":"additional","affiliation":[{"name":"Laboratory of Animal Biotechnology Federal University of Western Par\u00e1 (UFOPA) Santar\u00e9m Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Luciano Leite","family":"Pereira","sequence":"additional","affiliation":[{"name":"Laboratory of Animal Health (LARSANA) Federal University of Western Par\u00e1 (UFOPA) Santar\u00e9m Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Cleidson Manoel Gomes da","family":"Silva","sequence":"additional","affiliation":[{"name":"Centro Universit\u00e1rio da Amaz\u00f4nia Santar\u00e9m Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"William Gomes","family":"Vale","sequence":"additional","affiliation":[{"name":"Laboratory of Animal Biotechnology Federal University of Western Par\u00e1 (UFOPA) Santar\u00e9m Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6742-3652","authenticated-orcid":false,"given":"Antonio Humberto Hamad","family":"Minervino","sequence":"additional","affiliation":[{"name":"Laboratory of Animal Health (LARSANA) Federal University of Western Par\u00e1 (UFOPA) Santar\u00e9m Brazil"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2019,6,7]]},"reference":[{"key":"e_1_2_9_2_1","first-page":"139","article-title":"History, evolution and perspectives of timed artificial insemination programs in Brazil","volume":"9","author":"Baruselli P. 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