Peer-reviewed journal publications

1.  Perez, M. M., E. M. Cabrera, J. O. Giordano*. 2023. Effects of targeted clinical examination based on alerts from automated health monitoring systems on herd health and performance of lactating dairy cows. J. Dairy. Sci. 106:9474-9493. https://doi.org/10.3168/jds.2023-23477
2. Sitko E. M., A. Laplacette, D. Duhatschek, C. Rial, M. M. Perez, S. Tompkins, A. Kerwin, R. Domingues, M. Wiltbank, J. O. Giordano*. The ovarian function and endocrine phenotypes of lactating dairy cows during the estrous cycle were associated with genomic-enhanced predictions of fertility potential. J. Dairy Sci. (Accepted).
3. Rial C., A. Laplacette, L. Caixeta, C. Florentino, F. Peña-Mosca, J. O. Giordano*. 2023. Metabolic-digestive clinical disorders of lactating dairy cows were associated with alterations of rumination, physical activity, and lying behavior monitored by an ear-attached sensor. J. Dairy Sci. 106:9323-9344. https://doi.org/10.3168/jds.2022-23156
4. Rial C., A. Laplacette, L. Caixeta, C. Florentino, F. Peña-Mosca, J. O. Giordano*. 2023. Metritis and mastitis events in lactating dairy cows were associated with alterations of the pattern of rumination, physical activity, and lying behavior monitored by an ear-attached sensor. J. Dairy Sci. https://doi.org/10.3168/jds.2022-23157
5. Ren Y., D. Duhatschek, C. C. Bartolomeu, A. L. Laplacette, M. M. Perez, C. Rial, D. Erickson, J.O. Giordano*. 2023. An automated system for cattle reproductive management under the IoT framework. Part II: Induction of Luteinizing Hormone release after Gonadotropin Releasing Hormone delivery with e-Synch. Frontiers in Animal Science – Precision Livestock Section. Volume 4 – 2023. https://doi.org/10.3389/fanim.2023.1093857
6. Ren Y., D. Duhatschek, C. C. Bartolomeu, D. Erickson, J. O. Giordano*. 2023. An automated system for cattle reproductive management under the IoT framework. Part I: The e-Synch system and cow responses. Frontiers in Animal Science – Precision Livestock Section. Volume 4 – 2023. https://doi.org/10.3389/fanim.2023.1093851
7. Sitko E. M., M. M. Perez, G. E. Granados, M. Masello, F. Sosa Hernandez, E. M. Cabrera, E. M. Schilkowsky, F. A. Di Croce, A. K. McNeel, D. J. Weigel, and J. O. Giordano*. 2023. Effect of reproductive management programs that prioritized AI at detected estrus or timed AI on the reproductive performance of primiparous Holstein cows of different genetic merit for fertility. J. Dairy Sci. https://doi.org/10.3168/jds.2022-22673
8. Sitko E. M., F. A. Di Croce, A. K. McNeel, D. J. Weigel, and J. O. Giordano*. 2023. Effect of reproductive management programs that prioritized AI at detected estrus or timed AI on the economic performance of primiparous Holstein cows of different genetic merit for fertility. J. Dairy Sci. https://doi.org/10.3168/jds.2022-22674
9. Toledo M. Z., M. L. Stangaferro, R. Caputo Oliveira, P. L .J. Monteiro Jr., R. S. Gennari, D. Luchini, R.D. Shaver, J. O Giordano. and M. C. Wiltbank. 2023. Effects of feeding rumen-protected methionine pre- and postpartum in multiparous Holstein cows: Health disorders and interactions with production and reproduction. J. Dairy Sci. 106. Online ahead of print. https://doi:10.3168/jds.2022-21950
10. Rial C., A.L. Laplacette, and J.O. Giordano.* 2022. Effect of a targeted reproductive management program designed to prioritize insemination at detected estrus and optimize days to insemination on the reproductive performance of lactating dairy cows. J. Dairy Sci. 105:8411-8425. https://doi:10.3168/jds.2022-22082
11. Giordano J. O. *, E. M. Sitko, C. Rial, M. M. Perez and G. E. Granados. 2022. Use of multiple biological, management, and performance data for the design of targeted reproductive management strategies for dairy cows. J. Dairy Sci. 105:4669-4678. https://doi.org/10.3168/jds.2021-21476
12. Stangaferro M.L., Toledo M.Z., Gennari R.S., Perez M.M., Gamarra C.A., Sitko E.M., Monteiro P.L.J. Jr, Masello M., Prata A.B., Granados G.E., Van Amburgh M.E., Luchini D., Shaver R.D., Wiltbank M.C., Giordano J.O.* 2021. Effects of feeding rumen-protected methionine pre- and postpartum on reproductive outcomes of multiparous Holstein cows. J. Dairy Sci. 104:11210-11225. https://doi.org/10.3168/jds.2021-20190
13. Toledo M. Z., M. L. Stangaferro, R. S. Gennari, R. V. Barletta, M. M. Perez, R. Wijma, E. M. Sitko, G. Granados, M. Masello, M. E. Van Amburgh, D. Luchini, J. O. Giordano, R. D. Shaver, and M. C. Wiltbank. 2021. Effects of feeding rumen-protected methionine pre- and postpartum in multiparous Holstein cows: Lactation performance and plasma amino acid concentrations. J. Dairy Sci. 104:7583-7603. https://doi.org/10.3168/jds.2020-19021
14. Schilkowsky E. M., G. E. Granados, E M. Sitko, M. Masello, M. M. Perez, J. O. Giordano*. 2021. Evaluation and characterization of estrus alerts and behavioral parameters generated by an ear-attached accelerometer-based system for automated detection of estrus. J. Dairy Sci. 104:6222-6237. https://doi.org/10.3168/jds.2020-19667
15. Masello M., Y. Ren, D. Erickson, and J. O. Giordano*. 2020. An automated controlled-release device for intravaginal hormone delivery. J. Dairy Sci. Comm. 1:15-20. DOI: https://doi.org/10.3168/jdsc.2020-18816
16. Pérez M. M., R. Wijma, M. Scarbolo, E. Cabrera, F. Sosa, E. M. Sitko, and J. O. Giordano*. 2020. Lactating dairy cows managed for second and greater AI services with the Short-Resynch or day 25 Resynch program had similar reproductive performance. J. Dairy Sci. 103:10769-10783. DOI: 10.3168/jds.2020-18607
17. Masello M., M. M. Perez, G. E. Granados, M. L. Stangaferro, B. Ceglowski, M. J. Thomas, and J. O. Giordano*. 2020. Effect of reproductive management programs for first service on replacement dairy heifer economics. J. Dairy Sci. 104:471-485. https://doi.org/10.3168/jds.2020-18588
18. Masello M., E. M. Schillkowsky, Z. Lu, D. Erickson, J. Gavalchin, and J.O. Giordano*. 2020. A Lateral Flow-Based Portable Platform for Determination of Reproductive Status of Cattle. J. Dairy Sci. 103, 4743-4753. https://doi.org/10.3168/jds.2019-17517
19. Masello M., B. Ceglowski, M. J. Thomas, J. O. Giordano*. 2020. A reproductive management program aimed at increasing reinsemination of nonpregnant dairy cows at detected estrus resulted in similar reproductive performance than a program that favored timed AI. J. Dairy Sci. 103, 3719-3729. DOI: https://doi.org/10.3168/jds.2019-17585
20. Masello M., M. Scarbolo, M. V. Schneck, M. M. Perez, E. M. Schillkowsky, E. M. Sitko, F. Sosa Hernandez, E. M. Cabrera, R. M. Rossi, and J.O. Giordano*. 2020. Intravaginal instillation of prostaglandin F2α was as effective as intramuscular injection for induction of luteal regression in lactating dairy cows. J. Dairy Sci. 103:2743–2755. DOI: https://doi.org/10.3168/jds.2019-17589
21. Giordano J. O.*. 2019. Economic impact of reproductive performance in dairy herds and approaches for program selection. Clinical Theriogenology. 11:329-335. https://doi.org/10.58292/ct.v11.9528
22. Stangaferro M.L., R. W. Wijma, and J. O. Giordano*. 2019. Profitability of dairy cows submitted to the first service with the Presynch-Ovsynch or Double-Ovsynch protocol and different duration of the voluntary waiting period. J. Dairy Sci. 102:4546-4562. doi: 10.3168/jds.2018-15567.
23. Masello M., M. M. Perez, G. E. Granados, M. L. Stangaferro, B. Ceglowski, M. J. Thomas, and J. O. Giordano*. 2019. Reproductive performance of replacement dairy heifers submitted to first service with programs that favor insemination at detected estrus, timed AI, or a combination of both. J. Dairy Sci. 102:1671-1681. doi: 10.3168/jds.2018-15200.
24. Zolini A.M., W.G. Ortiz, E. Estrada-Cortes, M.S. Ortega, S. Dikmen, F. Sosa, J.O. Giordano, P.J. Hansen. 2019. Interactions of human chorionic gonadotropin with genotype and parity on fertility responses of lactating dairy cows. J. Dairy Sci. 102:846-856. doi: 10.3168/jds.2018-15358.
25. Stangaferro M.L., R. Wijma, M. Masello, M. J. Thomas, and J.O. Giordano*. 2018. Economic performance of lactating dairy cows submitted for first service timed artificial insemination after a voluntary waiting period of 60 or 88 days. J. Dairy Sci. 101:7500-7516. doi: 10.3168/jds.2018-14484.
26. Carvalho P. D., Santos VG, Giordano JO, Wiltbank MC, Fricke PM. 2018. Development of fertility programs to achieve high 21-day pregnancy rates in high-producing dairy cows. Theriogenology. 114:165-172. doi: https://doi.org/10.1016/j.theriogenology.2018.03.037
27. Wijma R., M. M. Pérez, M. Masello, D. G. García, M. L. Stangaferro, and J.O. Giordano*. 2018. A resynchronization of ovulation program based on ovarian structures present at nonpregnancy diagnosis reduced time to pregnancy in lactating dairy cows. J. Dairy Sci. 101:1697-1707. https://doi.org/10.3168/jds.2017-13489
28. Stangaferro M.L., R. Wijma, M. Masello, M. J. Thomas, and J.O. Giordano*. 2018. Reproductive performance and herd exit dynamics of lactating dairy cows managed for first service with the Presynch-Ovsynch or Double-Ovsynch protocol and different duration of the voluntary waiting period. J. Dairy Sci. 101:1673-1686. https://doi.org/10.3168/jds.2017-13425
29. Stangaferro M.L., R. Wijma, M. Masello, M. J. Thomas, and J.O. Giordano*. 2018. Extending the duration of the voluntary waiting period from 60 to 88 days in cows that received timed artificial insemination after the Double-Ovsynch protocol affected the reproductive performance, herd exit dynamics, and lactation performance of dairy cows. J. Dairy Sci. 101:717-735. https://doi.org/10.3168/jds.2017-13046
30. Wijma R., M.L. Stangaferro, M. Masello, G. E. Granados, and J.O. Giordano*. 2017. Resynchronization of ovulation protocols for dairy cows including or not including gonadotropin-releasing hormone to induce a new follicular wave: Effects on re-insemination pattern, ovarian responses, and pregnancy outcomes. J. Dairy Sci. 100:7613-7625. https://doi.org/10.3168/jds.2017-12550
31. Wijma R., M.L. Stangaferro, M. Masello, M. A. Elmetwally, G. E. Granados, F. Amovilli, and J.O. Giordano*. 2017. Intravaginal instillation of gonadotropin-releasing hormone analogues with an absorption enhancer induced a surge of luteinizing hormone in lactating dairy cows. J. Dairy Sci. 100:7626-7637. https://doi.org/10.3168/jds.2016-12513
32. Wijma R., M. L. Stangaferro, M. M. Kamat, S. V., T. L. Ott, and J. O. Giordano*. 2016. Embryo mortality around the period of maintenance of the corpus luteum causes alterations to the ovarian function of lactating dairy cows. Biology of Reproduction. 95:112, 1-14. https://doi.org/10.1095/biolreprod.116.142075
33. Stangaferro M.L., R. Wijma, L.S. Caixeta, M.A. Al-Abri, and J.O. Giordano*. 2016. Use of rumination and activity monitoring for the identification of dairy cows with health disorders. Part I. Metabolic and digestive disorders. J. Dairy Sci. 99:7395-7410. https://doi.org/10.3168/jds.2016-10907
34. Stangaferro M.L., R. Wijma, L.S. Caixeta, M.A. Al-Abri, and J.O. Giordano*. 2016. Use of rumination and activity monitoring for the identification of dairy cows with health disorders. Part II. Mastitis. J. Dairy Sci. 99:7411-7421. https://doi.org/10.3168/jds.2016-10908
35. Stangaferro M.L., R. Wijma, L.S. Caixeta, M.A. Al-Abri, and J.O. Giordano*. 2016. Use of rumination and activity monitoring for the identification of dairy cows with health disorders. Part III. Metritis. J. Dairy Sci. 99:7422-7433. https://doi.org/10.3168/jds.2016-11352
36. Wijma R., M.L. Stangaferro, and J.O. Giordano*. 2016. Circulating progesterone dynamics after intravaginal instillation of prostaglandin-F2α to lactating dairy cows. Theriogenology 85:1660-1668. https://doi.org/10.1016/j.theriogenology.2016.01.025
37. Giordano J.O. *, M.J. Thomas, G. Catucuamba, M.D. Curler, M. Masello, M.L. Stangaferro, and R. Wijma. 2016. Reproductive management strategies to improve the fertility of cows with a suboptimal response to resynchronization of ovulation. J. Dairy Sci. 99:2967-2978. https://doi.org/10.3168/jds.2015-10223
38. Giordano J.O. *, M.J. Thomas, G. Catucuamba, and M.D. Curler. 2016. Effect of extending the interval from Presynch to initiation of Ovsynch in a Presynch-Ovsynch protocol on fertility of timed artificial insemination services in lactating dairy cows. J. Dairy Sci. 99:746-757. https://doi.org/10.3168/jds.2015-10083
39. Giordano J.O. *, R.D. Watters, R. Wijma, and M.L. Stangaferro. 2015. Reproductive performance of lactating dairy cows after resynchronization with Ovsynch or a program aimed to maximize artificial insemination in estrus and fertility of timed artificial inseminations based on ovarian structures. J. Dairy Sci. 98:2488-501. https://doi.org/10.3168/jds.2014-8961
40. Wiltbank M.C., A.H. Souza, P.D. Carvalho, A.P. Cunha, J.O. Giordano, P.M. Fricke, G.M. Baez, and M.G. Diskin. 2014. Physiological and practical effects of progesterone on reproduction in dairy cattle. Animal. 8(Suppl. 1):70-81. https://doi.org/10.1017/s1751731114000585
41. Fricke P.M., P.D. Carvalho, J.O. Giordano, A. Valenza, G. Lopes, and M.C. Amundson. 2014. Expression and detection of estrus in dairy cows: the role of new technologies. Animal. 8(Suppl. 1):134-143. https://doi.org/10.1017/s1751731114000299
42. Fricke P.M., J.O. Giordano, A. Valenza, G. Lopes Jr, M.C. Amundson, and P.D. Carvalho. 2014. Reproductive performance of lactating dairy cows managed for first service using timed artificial insemination with or without detection of estrus using an activity-monitoring system. J. Dairy Sci. Mar 12. pii: S0022-0302(14)00190-8. doi: 10.3168/jds.2013-7366.
43. Pereira R.V., L.S. Caixeta, J.O. Giordano, C.L. Guard, and R.C. Bicalho. 2013. Reproductive performance of dairy cows resynchronized after pregnancy diagnosis at 31 ± 3 d after AI compared to resynchronization at 31 ± 3 d after AI with pregnancy diagnosis at 38 ± 3 d after AI. J. Dairy Sci. 96:7630-7639. doi: 10.3168/jds.2013-6723.
44. Bilby T.R., R.G.S. Bruno, K.J. Lager, R.C. Chebel, J.G.N. Moraes, P.M. Fricke, G. Lopes Jr., J.O. Giordano, J.E.P. Santos, F.S. Lima, J.S. Stevenson, and S.L. Pulley. 2013. Supplemental progesterone and timing of resynchronization on pregnancy outcomes in lactating dairy cows. J. Dairy Sci. 96:7032-7042. doi: 10.3168/jds.2013-6960.
45. Cabrera V.E., and J.O. Giordano 2013. Economic Analysis Tools for Dairy Reproduction Programs. Dairy eXtension. http://www.extension.org/pages/69997/evaluating-the-economic-value-of-changing-the-reproductive-management-program-for-a-specific-dairy-fa#.UnkRgflju-0.
46. Giordano J.O. *, M.C. Wiltbank, P.M. Fricke, S. Bas, R. Pawlisch, J.N. Guenther, and A.B. Nascimento. 2013. Effect of increasing GnRH and PGF2α dose during Double-Ovsynch on ovulatory response, luteal regression, and fertility of lactating dairy cows. Theriogenology. 80:773-783. https://doi.org/10.1016/j.theriogenology.2013.07.003
47. Lopes Jr. G., J.O. Giordano, A. Valenza, M.M. Herlihy, J.N. Guenther, M.C. Wiltbank, P.M. Fricke. 2013. Effect of timing of initiation of resynchronization and presynchronization with gonadotropin-releasing hormone on fertility of resynchronized inseminations in lactating dairy cows. J Dairy Sci. 96:3788-98. doi: 10.3168/jds.2012-6429.
48. Giordano J.O., J.L. Edwards, F.A. Di Croce, D. Roper, N.R. Rohrbach, A.M. Saxton, G.M. Schuenemann, T.M. Prado, and F.N. Schrick. 2013. Ovulatory follicle dysfunction in lactating dairy cows after treatment with Folltropin-V at the onset of luteolysis. Theriogenology. 79:1210-1217. doi: https://doi.org/10.1016/j.theriogenology.2013.02.020
49. Giordano J.O., P.M. Fricke, and V.E. Cabrera. 2013. Economics of resynchronization strategies including chemical tests to identify nonpregnant cows. Journal of Dairy Science. 96:949-961. doi: 10.3168/jds.2012-5704.
50. Valenza A. *, J.O. Giordano*, G. Lopes Jr.*, L. Vincenti, M.C. Amundson, and P.M. Fricke. 2012. Assessment of an accelerometer system for detection of estrus and treatment with gonadotropin-releasing hormone at the time of insemination in lactating dairy cows. J. Dairy Sci. 95:7115-7527. doi: 10.3168/jds.2012-5639. *Co-first authors
51. Herlihy M.M., J.O. Giordano, A.H. Souza, H. Ayres, R.M. Ferreira, A. Keskin, A.B. Nascimento, J.N. Guenther, J.M. Gaska, S.J. Kacuba, M.A. Crowe, S.T. Butler, and M.C. Wiltbank. 2012. Presynchronization with Double-Ovsynch improves fertility at first postpartum artificial insemination in lactating dairy cows. J. Dairy Sci. 95:7003-7014. doi: 10.3168/jds.2011-5260.
52. Giordano J.O., Kalantari A.S., P.M. Fricke, M.C. Wiltbank, and V.E. Cabrera. 2012. A daily herd Markov-chain model to study the reproductive and economic impact of reproductive programs combining timed artificial insemination and estrus detection. J. Dairy Sci. 95:5442-5460. https://doi.org/10.3168/jds.2011-4972
53. Giordano J.O., M.C. Wiltbank, J.N. Guenther, M.S. Ares, G. Lopes Jr., M.M. Herlihy, and P.M. Fricke. 2012. Effect of presynchronization with human Chorionic Gonadotropin (hCG) or GnRH 7 d before resynchronization of ovulation on fertility in lactating dairy cows. J. Dairy Sci. 95:5612-25. https://doi.org/10.3168/jds.2011-5035
54. Giordano J.O., J.N. Guenther, G. Lopes Jr., M.M. Herlihy, A.B. Nascimento, P.M. Fricke, and M.C. Wiltbank. 2012. Effect of progesterone on magnitude of the luteinizing hormone surge induced by two different doses of gonadotropin-releasing hormone in lactating dairy cows. J. Dairy Sci. 95:3781-93. https://doi.org/10.3168/jds.2011-5155
55. Giordano J.O., M.C. Wiltbank, and P.M. Fricke. 2012. Humoral immune response in lactating dairy cows after repeated exposure to human chorionic gonadotropin. Theriogenology. 78:218-224. https://doi.org/10.1016/j.theriogenology.2012.02.003
56. Giordano J.O., J.N. Guenther, G. Lopes Jr., and P.M. Fricke. 2012. Changes in serum pregnancy-associated glycoproteins, pregnancy specific protein B, and progesterone concentrations after induction of pregnancy loss in lactating dairy cows. J. Dairy Sci. 95:683-697. https://doi.org/10.3168/jds.2011-4609
57. Giordano J.O., M.C. Wiltbank, S. Bas, A.P. Cunha, R.A. Pawlisch, J.N. Guenther, and P.M. Fricke. 2012. Increased fertility in lactating dairy cows resynchronized with Double-Ovsynch compared with Ovsynch initiated 32 d after timed artificial insemination. J. Dairy Sci. 95:639-653. https://doi.org/10.3168/jds.2011-4418
58. Giordano J.O., P.M. Fricke, M.C. Wiltbank, and V.E. Cabrera. 2011. An economic decision-making support system for selection of reproductive management programs on dairy farms. J. Dairy Sci. 94:6216-6232. https://doi.org/10.3168/jds.2011-4376