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Santos GMGD, Junior LB, Silva-Santos KC, Ayres Dias JH, Dias IDS, Seneda MM, Morotti F. Conception rate and pregnancy loss in fixed-time cattle embryo transfer programs are related to the luteal blood perfusion but not to the corpus luteum size. Theriogenology 2023; 210:251-255. [PMID: 37549464 DOI: 10.1016/j.theriogenology.2023.07.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/10/2023] [Accepted: 07/31/2023] [Indexed: 08/09/2023]
Abstract
This study aimed to evaluate the effect of luteal blood perfusion and corpus luteum (CL) area on the conception rate and occurrence of pregnancy loss of recipients in a large-scale fixed-time embryo transfer (FTET) program. Multiparous Brangus cows (n = 1700) at 45 days postpartum and body condition scores (BCS) between 2.5 and 4.0 (3.0 ± 0.3) were used in this study. On a random day of the estrous cycle (day -10), the females received progesterone and estradiol based on the FTET protocol. On day 7, 1465 recipients had at least one CL and were evaluated using B-mode ultrasound for the CL area (cm2) and color Doppler for the luteal blood perfusion score (I/low-vascularization area <40% of the CL; II/medium-vascularization >45% to < 50%; and III/high-vascularization >50%). Immediately after CL evaluation, each recipient received a single fresh embryo (blastocyst stage) ipsilateral to the CL, in vitro produced from a commercial laboratory. Pregnancy diagnosis was performed at 30 days and repeated 60 days later to evaluate pregnancy loss (30-90 days). Ultrasound evaluation and embryo transfer were performed by a single technician. For data analysis, in addition to luteal blood perfusion groups, recipients were retrospectively ranked according to CL area into small (<3 cm2; 2.63 ± 0.01), medium (>3 to < 4 cm2; 3.44 ± 0.01), and large (>4 cm2; 4.77 ± 0.03). Data were analyzed using a logistic regression model (P < 0.05). The overall conception rate was 44.2% (648/1465), influenced by the luteal blood perfusion score [P = 0.03; high 48.4%a (134/277), medium 44.6%a (427/958), and low 37.8%b (87/230)] but not by CL area ranking [P = 0.37; large 41.8% (225/538), medium 45.2% (276/610), and small 46.4% (147/317)]. There was no interaction between the luteal blood perfusion score and CL area ranking (P = 0.81), and the BCS did not affect the results of this study (P = 0.51). In terms of pregnancy loss up to 90 days, there was no effect on the CL area ranking (P = 0.77), but the flow score showed an effect [P = 0.03; high 3.6%b (5/139), medium 9.3%a (44/471), and low 10.3%a (10/97)]. The conception rate and occurrence of pregnancy loss in the FTET program in beef cattle are related to luteal blood perfusion but not CL size.
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Affiliation(s)
| | | | | | | | | | | | - Fábio Morotti
- UEL - Universidade Estadual de Londrina, Londrina, PR, Brazil; UNOPAR - Universidade Pitágoras Unopar Anhanguera, Arapongas, PR, Brazil.
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Rosa CO, Marinho LSR, da Rosa PRA, De Cesaro MP, Lunardelli PA, Silva-Santos KC, Basso AC, Bordignon V, Seneda MM. Molecular characteristics of granulosa and cumulus cells and oocyte competence in Nelore cows with low and high numbers of antral follicles. Reprod Domest Anim 2018; 53:921-929. [DOI: 10.1111/rda.13189] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 03/06/2018] [Indexed: 12/20/2022]
Affiliation(s)
- CO Rosa
- Department of Veterinary Clinics; Laboratory of Biotechnology the Animal Reproduction-ReproA; State University of Londrina; Londrina Brazil
| | - LSR Marinho
- Department of Veterinary Clinics; Laboratory of Biotechnology the Animal Reproduction-ReproA; State University of Londrina; Londrina Brazil
| | - PRA da Rosa
- Department of Large Animal Clinics; Laboratory of Biotechnology and Animal Reproduction-BioRep; Federal University of Santa Maria; Santa Maria Brazil
| | - MP De Cesaro
- Department of Large Animal Clinics; Laboratory of Biotechnology and Animal Reproduction-BioRep; Federal University of Santa Maria; Santa Maria Brazil
| | | | - KC Silva-Santos
- Department of Veterinary Clinics; Laboratory of Biotechnology the Animal Reproduction-ReproA; State University of Londrina; Londrina Brazil
| | - AC Basso
- In Vitro Brasil LTDA; Mogi Mirim Brazil
| | - V Bordignon
- Department of Animal Science; McGill University; Sainte Anne de Bellevue Canada
| | - MM Seneda
- Department of Veterinary Clinics; Laboratory of Biotechnology the Animal Reproduction-ReproA; State University of Londrina; Londrina Brazil
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Morotti F, Moretti R, dos Santos GMG, Silva-Santos KC, Ramos Cerqueira PH, Seneda MM. Ovarian follicular dynamics and conception rate in Bos indicus cows with different antral follicle counts subjected to timed artificial insemination. Anim Reprod Sci 2018; 188:170-177. [DOI: 10.1016/j.anireprosci.2017.12.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2017] [Revised: 11/24/2017] [Accepted: 12/01/2017] [Indexed: 10/18/2022]
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Machado FZ, Bergamo LZ, Bizarro-Silva C, Morotti F, Silva-Santos KC, Seneda MM. Cell proliferation in ovarian follicles from Bos taurus indicus females with different antral follicle count. Anim Reprod 2017. [DOI: 10.21451/1984-3143-ar929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Santos GMGD, Silva-Santos KC, Barreiros TRR, Morotti F, Sanches BV, de Moraes FLZ, Blaschi W, Seneda MM. High numbers of antral follicles are positively associated with in vitro embryo production but not the conception rate for FTAI in Nelore cattle. Anim Reprod Sci 2016; 165:17-21. [DOI: 10.1016/j.anireprosci.2015.11.024] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 11/07/2015] [Accepted: 11/30/2015] [Indexed: 11/26/2022]
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Silva-Santos KC, Santos GMGD, Siloto LS, Santos JTD, Oliveira ERD, Machado FZ, Rosa CO, Seneda MM. The correlation between the number of antral follicles and ovarian reserves (preantral follicles) in purebred Bos indicus and Bos taurus cows. Anim Reprod Sci 2014; 151:119-25. [DOI: 10.1016/j.anireprosci.2014.10.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 09/12/2014] [Accepted: 10/15/2014] [Indexed: 10/24/2022]
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Silva-Santos KC, Ferreira CR, Santos GMG, Eberlin MN, Siloto LS, Rosa CO, Marcantonio TN, Seneda MM. MALDI-MS Lipid Profiles of Oocytes Recovered by Ovum Pickup fromBos indicusand 1/2indicus×tauruswith High vs Low Oocyte Yields. Reprod Domest Anim 2014; 49:711-8. [DOI: 10.1111/rda.12352] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Accepted: 05/14/2014] [Indexed: 11/29/2022]
Affiliation(s)
- KC Silva-Santos
- Laboratório de Biotecnologia da Reprodução Animal (ReproA); DCV-CCA-Universidade Estadual de Londrina (UEL); Londrina Brazil
| | - CR Ferreira
- ThoMSon Mass Spectrometry Laboratory; Institute of Chemistry; University of Campinas; Londrina Brazil
| | - GMG Santos
- Laboratório de Biotecnologia da Reprodução Animal (ReproA); DCV-CCA-Universidade Estadual de Londrina (UEL); Londrina Brazil
| | - MN Eberlin
- ThoMSon Mass Spectrometry Laboratory; Institute of Chemistry; University of Campinas; Londrina Brazil
| | - LS Siloto
- Laboratório de Biotecnologia da Reprodução Animal (ReproA); DCV-CCA-Universidade Estadual de Londrina (UEL); Londrina Brazil
| | - CO Rosa
- Laboratório de Biotecnologia da Reprodução Animal (ReproA); DCV-CCA-Universidade Estadual de Londrina (UEL); Londrina Brazil
| | - TN Marcantonio
- Laboratório de Biotecnologia da Reprodução Animal (ReproA); DCV-CCA-Universidade Estadual de Londrina (UEL); Londrina Brazil
| | - MM Seneda
- Laboratório de Biotecnologia da Reprodução Animal (ReproA); DCV-CCA-Universidade Estadual de Londrina (UEL); Londrina Brazil
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Silva-Santos KC, Santos GMG, Koetz Júnior C, Morotti F, Siloto LS, Marcantonio TN, Urbano MR, Oliveira RL, Lima DCM, Seneda MM. Antral Follicle Populations and Embryo Production -In VitroandIn Vivo -ofBos indicus-taurusDonors from Weaning to Yearling Ages. Reprod Domest Anim 2014; 49:228-32. [DOI: 10.1111/rda.12255] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Accepted: 10/07/2013] [Indexed: 11/30/2022]
Affiliation(s)
- KC Silva-Santos
- Laboratório de Biotecnologia da Reprodução Animal (ReproA); DCV-CCA-Universidade Estadual de Londrina (UEL); Londrina Brazil
| | - GMG Santos
- Laboratório de Biotecnologia da Reprodução Animal (ReproA); DCV-CCA-Universidade Estadual de Londrina (UEL); Londrina Brazil
| | - C Koetz Júnior
- Faculdade de Medicina Veterinária; Universidade Norte do Paraná (UNOPAR); Arapongas Brazil
| | - F Morotti
- Laboratório de Biotecnologia da Reprodução Animal (ReproA); DCV-CCA-Universidade Estadual de Londrina (UEL); Londrina Brazil
| | - LS Siloto
- Laboratório de Biotecnologia da Reprodução Animal (ReproA); DCV-CCA-Universidade Estadual de Londrina (UEL); Londrina Brazil
| | - TN Marcantonio
- Laboratório de Biotecnologia da Reprodução Animal (ReproA); DCV-CCA-Universidade Estadual de Londrina (UEL); Londrina Brazil
| | - MR Urbano
- Departamento de Estatística (DSTA)-CCE; Universidade Estadual de Londrina (UEL); Londrina Brazil
| | - RL Oliveira
- Laboratório de Biotecnologia da Reprodução Animal (ReproA); DCV-CCA-Universidade Estadual de Londrina (UEL); Londrina Brazil
| | - DCM Lima
- Faculdade de Medicina Veterinária; Universidade Norte do Paraná (UNOPAR); Arapongas Brazil
| | - MM Seneda
- Laboratório de Biotecnologia da Reprodução Animal (ReproA); DCV-CCA-Universidade Estadual de Londrina (UEL); Londrina Brazil
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Sanches BV, Marinho LSR, Filho BDO, Pontes JHF, Basso AC, Meirinhos MLG, Silva-Santos KC, Ferreira CR, Seneda MM. Cryosurvival and pregnancy rates after exposure of IVF-derived Bos indicus embryos to forskolin before vitrification. Theriogenology 2013; 80:372-7. [PMID: 23746692 DOI: 10.1016/j.theriogenology.2013.04.026] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Revised: 03/19/2013] [Accepted: 04/10/2013] [Indexed: 10/26/2022]
Abstract
In vitro-produced (IVP) bovine embryos are more sensitive to cryopreservation than their in vivo counterparts due to their higher lipid concentrations, whereas Bos indicus IVP embryos are even more sensitive than Bos taurus IVP embryos. To examine the effects of a lipolytic agent, before vitrification of Bos indicus IVP embryos, on embryo survival, viability, and pregnancy rates, two experiments were conducted. In experiment 1, Bos indicus (Nelore) embryos were produced from abattoir-derived ovaries and allocated into two groups. In the treatment group, 10 μM of forskolin was added to the in vitro culture medium on Day 5 and incubated for 48 hours. On Day 7 of culture, IVP-expanded blastocysts from both the control (n = 101) and treatment (n = 112) groups were vitrified with ethylene glycol and DMSO via the Cryotop procedure. Although there was no significant difference between the rates of blastocoel reexpansion and hatching of the embryos exposed to forskolin (87.5% and 70.5%, respectively) compared with the control embryos (79.2% and 63.3%, respectively), the numerically superior rates of the embryos exposed to forskolin led to another experiment. In experiment 2, blastocysts produced from the ovum pick up were exposed or not exposed to the lipolytic agent and vitrified as in experiment 1. Embryos treated with forskolin had higher pregnancy rates than the control group (48.8% vs. 18.5%). In view of these results, 1908 Bos indicus embryos were produced from ovum pick up, exposed to the lipolytic agent, and blastocysts were transferred to recipients, and the pregnancy rates of the embryos of various breeds were compared. The mean pregnancy rate obtained was 43.2%. All data were analyzed by chi-square or by binary logistic regression (P ≤ 0.05). In conclusion, treatment with forskolin before vitrification improved cryotolerance of Bos indicus IVP embryos, resulting in good post-transfer pregnancy rates.
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Affiliation(s)
- B V Sanches
- In Vitro Brasil Ltda, Mogi Mirim, São Paulo, SP, Brazil
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Silva-Santos KC, Santos GMG, Siloto LS, Hertel MF, Andrade ER, Rubin MIB, Sturion L, Melo-Sterza FA, Seneda MM. Estimate of the population of preantral follicles in the ovaries of Bos taurus indicus and Bos taurus taurus cattle. Theriogenology 2011; 76:1051-7. [PMID: 21722949 DOI: 10.1016/j.theriogenology.2011.05.008] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2010] [Revised: 05/06/2011] [Accepted: 05/06/2011] [Indexed: 10/18/2022]
Abstract
The number of oocytes recovered from Bos taurus indicus females subjected to ovum pick-up averaged two to four times greater compared to Bos taurus taurus females. The objective of the present study was to test the hypothesis that this difference in oocyte yield was due to more preantral follicles in the ovaries of Bos indicus females. Ovaries (n = 64) from Nelore (Bos indicus) fetuses (n = 10), heifers (n = 12), and cows (n = 10), and Aberdeen Angus (Bos taurus) fetuses (n = 10), heifers (n = 12), and cows (n = 10) were cut longitudinally into halves, fixed, and processed for histological evaluation. The number of preantral follicles was estimated by counting them in each histological section, using the oocyte nucleus as a marker and employing a correction factor. The average number of preantral follicles in the ovaries of Bos indicus vs Bos taurus was (mean ± SD) 143,929 ± 64,028 vs 285,155 ± 325,195 for fetuses, 76,851 ± 78,605 vs 109,673 ± 86,078 for heifers, and 39,438 ± 31,017 vs 89,577 ± 86,315 for cows (P > 0.05). The number of preantral follicles varied greatly among individual animals within the same category, as well as between breeds. In conclusion, we inferred that the higher oocyte yield from Bos indicus females was not due to a greater ovarian reserve of preantral follicles. Therefore, mechanisms controlling follicle development after the preantral stage likely accounted for differences between Bos indicus and Bos taurus females in number of oocytes retrieved at ovum pick-up.
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Affiliation(s)
- K C Silva-Santos
- Laboratório de Reprodução Animal, DCV-CCA-UEL, Londrina, PR, Brazil
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