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Showing results for timed ai
Search for Timev AI instead (1 results)
The cow as an induced ovulator: timed AI after synchronization of ovulation.
Wiltbank MC, Pursley JR. Wiltbank MC, et al. Theriogenology. 2014 Jan 1;81(1):170-85. doi: 10.1016/j.theriogenology.2013.09.017. Epub 2013 Oct 2. Theriogenology. 2014. PMID: 24274420 Review.
Timed-AI after synchronization of ovulation has become one of the most used reproductive technologies developed during the past 40 years. ...Our well-cited report, published in Theriogenology in 1995, presented a method termed Ovsynch, that used GnRH and PGF2alpha t …
Timed-AI after synchronization of ovulation has become one of the most used reproductive technologies developed during the pas …
Chronic hypertension in pregnancy.
Battarbee AN, Sinkey RG, Harper LM, Oparil S, Tita ATN. Battarbee AN, et al. Am J Obstet Gynecol. 2020 Jun;222(6):532-541. doi: 10.1016/j.ajog.2019.11.1243. Epub 2019 Nov 9. Am J Obstet Gynecol. 2020. PMID: 31715148 Review.
These challenges and recent guidelines for the management of chronic hypertension are reviewed. Well-timed pregnancies are of utmost importance to reduce the risks of chronic hypertension; long-acting reversible contraceptive options are preferred. ...
These challenges and recent guidelines for the management of chronic hypertension are reviewed. Well-timed pregnancies are of utmost …
A review of current timed-AI (TAI) programs for beef and dairy cattle.
Colazo MG, Mapletoft RJ. Colazo MG, et al. Can Vet J. 2014 Aug;55(8):772-80. Can Vet J. 2014. PMID: 25082993 Free PMC article. Review.
This is a review of the physiology and endocrinology of the estrous cycle and how ovarian physiology can be manipulated and controlled for timed artificial insemination (TAI) in beef and dairy cattle. Estrus detection is required for artificial insemination (AI), bu …
This is a review of the physiology and endocrinology of the estrous cycle and how ovarian physiology can be manipulated and controlled for …
Meta-analysis of progesterone supplementation during timed artificial insemination programs in dairy cows.
Bisinotto RS, Lean IJ, Thatcher WW, Santos JE. Bisinotto RS, et al. J Dairy Sci. 2015 Apr;98(4):2472-87. doi: 10.3168/jds.2014-8954. Epub 2015 Jan 31. J Dairy Sci. 2015. PMID: 25648806 Free article. Review.
Information regarding the presence of corpus luteum (CL) at the initiation of the synchronization protocol was available for 6,883 supplemented cows and 6,879 untreated controls in 21 experiments. Studies were classified based on service number (first AI vs. resynchronized …
Information regarding the presence of corpus luteum (CL) at the initiation of the synchronization protocol was available for 6,883 supplemen …
Comparison of the effects of two shortened timed-AI protocols on pregnancy per AI in beef cattle.
Macmillan K, Gobikrushanth M, Sanz A, Bignell D, Boender G, Macrae L, Mapletoft RJ, Colazo MG. Macmillan K, et al. Theriogenology. 2020 Jan 15;142:85-91. doi: 10.1016/j.theriogenology.2019.09.038. Epub 2019 Sep 25. Theriogenology. 2020. PMID: 31581047
The objective was to compare pregnancy per AI (P/AI) between two shortened timed-AI (TAI) protocols in beef cattle. ...There was no association between P/AI and timing of AI. In summary, the J-synch protocol resulted in greater P/AI …
The objective was to compare pregnancy per AI (P/AI) between two shortened timed-AI (TAI) protocols in beef catt …
Optimizing timed AI protocols for Angus beef heifers: Comparison of induction of synchronized ovulation with estradiol cypionate or GnRH.
Silva EP, Wiltbank MC, Machado AB, Gambin LS, Dias MM, Chaiben MFC, Bernardi ML, Borges JBS. Silva EP, et al. Theriogenology. 2018 Nov;121:7-12. doi: 10.1016/j.theriogenology.2018.07.019. Epub 2018 Jul 27. Theriogenology. 2018. PMID: 30125829
This study compared estradiol cypionate (ECP) or GnRH as ovulation inducers at the end of a timed AI (TAI) protocol in Angus heifers. On day 0, heifers (n = 415), between 22 and 24 months of age, were treated with an intravaginal 1 g progesterone (P4) insert and 2 m …
This study compared estradiol cypionate (ECP) or GnRH as ovulation inducers at the end of a timed AI (TAI) protocol in Angus h …
Administration of PGF2alpha at the moment of timed-AI using sex-sorted or conventional semen in suckled nelore cows with different intensity of estrus behavior.
Diniz JHW, Peres RFG, Teixeira ACB, Riveros JAN, Noronha IM, Martins CFG, Oliveira CS, Pohler KG, Pugliesi G, Oliveira LZ. Diniz JHW, et al. Theriogenology. 2021 Oct 15;174:169-175. doi: 10.1016/j.theriogenology.2021.08.023. Epub 2021 Aug 21. Theriogenology. 2021. PMID: 34455244 Free article.
The aim of this work was to evaluate pregnancy rates (PR) and ovulatory characteristics of Nelore cows receiving PGF2alpha at the time of AI (artificial insemination) in a progesterone(P4)/estradiol-based timed-AI protocol. ...All cows received a 12.5 mg (IM) …
The aim of this work was to evaluate pregnancy rates (PR) and ovulatory characteristics of Nelore cows receiving PGF2alpha at the time of …
Modifications of the G6G timed-AI protocol improved pregnancy per AI and reduced pregnancy loss in lactating dairy cows.
Heidari F, Dirandeh E, Ansari Pirsaraei Z, Colazo MG. Heidari F, et al. Animal. 2017 Nov;11(11):2002-2009. doi: 10.1017/S1751731117000520. Epub 2017 Mar 15. Animal. 2017. PMID: 28294091 Free article.
In dairy cows, subjected to a G6G protocol, objectives were to determine effects of (1) extending the interval from prostaglandin F2alpha (PGF2alpha) to gonadotropin-releasing hormone (GnRH) during presynchronization; and (2) adding a second PGF2alpha treatment before artificial …
In dairy cows, subjected to a G6G protocol, objectives were to determine effects of (1) extending the interval from prostaglandin F2alpha (P …
Economic comparison of an ear tag automated activity monitor for estrus detection with timed-AI in Holstein heifers.
Macmillan K, Boyda A, Gobikrushanth M, Plastow G, Colazo MG. Macmillan K, et al. Theriogenology. 2021 Nov;175:155-162. doi: 10.1016/j.theriogenology.2021.09.009. Epub 2021 Sep 16. Theriogenology. 2021. PMID: 34555714
Sensitivity analyses were also conducted to determine the effect of pregnancy per AI (P/AI), outsourcing AI, AAM tag cost and herd size on the net outcome. ...For the first AI, the P/AI was less in the TAI compared to the AAM group; however, the …
Sensitivity analyses were also conducted to determine the effect of pregnancy per AI (P/AI), outsourcing AI, AAM tag co …
Reproductive management in buffalo by artificial insemination.
Neglia G, de Nicola D, Esposito L, Salzano A, D'Occhio MJ, Fatone G. Neglia G, et al. Theriogenology. 2020 Jul 1;150:166-172. doi: 10.1016/j.theriogenology.2020.01.016. Epub 2020 Jan 20. Theriogenology. 2020. PMID: 31982156 Review.
Protocols that synchronize the time of ovulation enable fixed timed AI, avoiding estrous detection. Factors to consider when selecting an AI protocol include animal category (heifers, primiparous or pluriparous), reproductive status (cyclic or anestrus), and …
Protocols that synchronize the time of ovulation enable fixed timed AI, avoiding estrous detection. Factors to consider when s …
1,240 results