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Kleemann DO, Kelly JM, Foyster KM, Swinbourne AM, Weaver AC, Walker SK. Effects of short and long - term nutrition and progesterone supplementation on the success of fixed - time artificial insemination in the ewe. Anim Reprod Sci 2024; 265:107477. [PMID: 38663150 DOI: 10.1016/j.anireprosci.2024.107477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 03/10/2024] [Accepted: 04/17/2024] [Indexed: 05/24/2024]
Abstract
The success of fixed - time artificial insemination (AI) in the ewe is variable due to poor synchrony of estrus. We examined the effects of long-term nutrition (LTN; low, medium, high - 6 months), short-term nutrition (STN; 1.0 M, 1.5 M - 14 days) and progesterone supplementation (P; single pessary, replacement on Day 9) on synchrony and reproductive outcomes. High LTN advanced (P < 0.05) estrus, increased (P = 0.06) pregnancy (range 71.1 - 81.1%) and improved (P < 0.01) litter size (range 1.30 - 1.50). STN increased (P < 0.05) pregnancy (79.0 versus 72.3%) but not litter size or timing of estrus. A LTN x STN interaction (P < 0.01) for time of estrus indicates that the effects of LTN were moderated by STN depending on the level of LTN. Pessary replacement delayed (P < 0.05) the onset of estrus, improved synchrony but did not affect pregnancy or litter size. High LTN increased (P < 0.05) the number of large (≥ 3.8 mm) and medium - size follicles (2.0 - 3.7 mm) but the diameter of large follicles tended to be reduced (P = 0.08) on Day 12. STN did not affect follicle number or size whilst P reduced (P < 0.05) the diameter of large follicles on Day 12 (4.83 versus 5.10 mm) and increased the number of medium - size follicles (3.56 versus 2.74 mm). In conclusion, both LTN and STN are major sources of variability in AI programs whilst pessary replacement has potential to reduce variability.
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Affiliation(s)
- David O Kleemann
- Turretfield Research Centre, South Australian Research and Development Institute, Holland Road, Rosedale, South Australia 5350, Australia.
| | - Jennifer M Kelly
- Turretfield Research Centre, South Australian Research and Development Institute, Holland Road, Rosedale, South Australia 5350, Australia.
| | - Kimberley M Foyster
- School of Animal and Veterinary Sciences, Roseworthy Campus, The University of Adelaide, Roseworthy, South Australia 5371, Australia.
| | - Alyce M Swinbourne
- Turretfield Research Centre, South Australian Research and Development Institute, Holland Road, Rosedale, South Australia 5350, Australia.
| | - Alice C Weaver
- Turretfield Research Centre, South Australian Research and Development Institute, Holland Road, Rosedale, South Australia 5350, Australia.
| | - Simon K Walker
- Turretfield Research Centre, South Australian Research and Development Institute, Holland Road, Rosedale, South Australia 5350, Australia.
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2
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Nakafeero A, Gonzalez-Bulnes A, Martinez-Ros P. Use of Short-Term CIDR-Based Protocols for Oestrus Synchronisation in Goats at Tropical and Subtropical Latitudes. Animals (Basel) 2024; 14:1560. [PMID: 38891607 PMCID: PMC11171354 DOI: 10.3390/ani14111560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2024] [Revised: 05/19/2024] [Accepted: 05/23/2024] [Indexed: 06/21/2024] Open
Abstract
This review aims to provide an insight into the application and efficiency of CIDR-based protocols for ES in goats raised under tropical and subtropical environments. In temperate regions, short-term CIDR treatments are replacing long-term treatments and sponges used in earlier decades. In addition, the use of co-treatments for the induction of ovulation is gradually changing from hormonal to non-hormonal methods, given the drive towards clean, green, and ethical techniques for reproductive management. Whereas the subtropical region registers ongoing research in the development of new ES protocols, there are few reports from the tropics, particularly Africa, one of the regions with the highest population of goats. Therefore, this calls for research to develop the most appropriate protocols for these regions, since the protocols currently used are largely hormonal based, as they were developed for goats at higher latitudes. Management and environmental factors determine the breeding pattern of goats at tropical latitudes rather than photoperiods, and they are the main causes of reproductive seasonality. The use of ES methods, particularly short-term CIDR-based protocols, along with artificial insemination, may have a significant impact on the productivity of goats in these regions when these factors are controlled.
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Affiliation(s)
- Angella Nakafeero
- Departamento de Produccion y Sanidad Animal, Facultad de Veterinaria, Universidad Cardenal Herrera-CEU, CEU Universities, C/Tirant lo Blanc, 7, Alfara del Patriarca, 46115 Valencia, Spain;
| | | | - Paula Martinez-Ros
- Departamento de Produccion y Sanidad Animal, Facultad de Veterinaria, Universidad Cardenal Herrera-CEU, CEU Universities, C/Tirant lo Blanc, 7, Alfara del Patriarca, 46115 Valencia, Spain;
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Brochado C, Duran BJ, Kieffer JD, Pinczak A, Menchaca A, Garcia-Guerra A. Reduced embryo yield obtained from superstimulated ewes with low circulating AMH concentration is improved by lengthening the FSH treatment. Theriogenology 2024; 218:79-88. [PMID: 38301510 DOI: 10.1016/j.theriogenology.2024.01.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 01/17/2024] [Accepted: 01/23/2024] [Indexed: 02/03/2024]
Abstract
The aim of the present study was to evaluate: 1) the association between AMH, AFC, superovulatory response and embryo yield in sheep; and 2) the effect of FSH treatment length during superstimulation of the first follicular wave on ovarian response and embryo yield, particularly in ewes with low and high AMH. The experiment was performed on 63 Polled Dorset ewes that received an ovarian superstimulatory treatment during the first follicular wave (Day 0 protocol). Ewes were administered a total dose of 240 mg of FSH distributed in six (6-dose regimen, n = 30) or eight (8-dose regimen, n = 33) decreasing doses administered 12 h apart. On Day -9 (random stage of the estrous cycle) and Day 0 (day of the first FSH dose) ovarian ultrasonography was performed and blood samples were collected for AFC and AMH determinations, respectively. A weak positive correlation between AMH and small AFC (follicles <4 mm) was observed (r = 0.23; P = 0.07), and AMH concentration was positively correlated (r = 0.29; P < 0.05) with the number of corpora lutea (CL) determined at embryo collection (i.e., 6 d after insemination). The length of FSH treatment tended (P = 0.06) to affect the ovarian response, such that the number of CL was greater in 8-dose than 6-dose treated ewes, while no differences (P > 0.10) in embryo yield outcomes were observed. For further analysis, ewes were classified into low (<7 ng/mL) and high (>10 ng/mL) serum AMH. In high AMH ewes, there were no differences (P > 0.05) in the number of CL nor embryo yield between the 6-dose and 8-dose treatment (e.g., 7.8 ± 2.4 and 8.3 ± 2.5 transferable embryos, respectively; P = 0.92). Conversely, for low AMH ewes, fertilized ova and embryo yield were greater (P ≤ 0.05) for ewes receiving the 8-dose than the 6-dose superstimulatory treatment (e.g., 8.4 ± 2.8 vs. 2.7 ± 0.9 transferable embryos, respectively, P ≤ 0.05). In conclusion, embryo production in poor responding ewes with low low circulating AMH is improved by extending the superstimulatory treatment length from 6 to 8 FSH doses.
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Affiliation(s)
| | - B J Duran
- Department of Animal Sciences, The Ohio State University, Columbus, OH, USA
| | - J D Kieffer
- Department of Animal Sciences, The Ohio State University, Columbus, OH, USA
| | - A Pinczak
- Fundación IRAUy, Montevideo, Uruguay
| | - A Menchaca
- Fundación IRAUy, Montevideo, Uruguay; Plataforma de Investigación en Salud Animal, Instituto Nacional de Investigación Agropecuaria (INIA), Montevideo, Uruguay.
| | - A Garcia-Guerra
- Department of Animal Sciences, The Ohio State University, Columbus, OH, USA.
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Lu J, Zhang X, Wang Q, Ma M, Li YF, Guo J, Wang XG, Dou TC, Hu YP, Wang KH, Qu L. Effects of exogenous energy on synthesis of steroid hormones and expression characteristics of the CREB/StAR signaling pathway in theca cells of laying hen. Poult Sci 2024; 103:103414. [PMID: 38262338 PMCID: PMC10835437 DOI: 10.1016/j.psj.2023.103414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 12/14/2023] [Accepted: 12/27/2023] [Indexed: 01/25/2024] Open
Abstract
Energy and the cAMP-response element binding protein (CREB)/steroidogenic acute regulatory protein (StAR) signaling pathway play important roles in steroid hormone production and follicular development in hens. This present study aimed to investigate the effects of exogenous energy on the synthesis of steroid hormones and the expression characteristics of the CREB/StAR signaling pathway in theca cells of laying hen. The primary theca cells of small yellow follicles were randomly divided into 6 treatments and cultured in medium with glucose concentrations of 1, 1.5, 3, 4.5, 6, and 7.5 mg/mL for 48 h. It was found that growth was robust and cell outlines were clear when cells were cultured with 1, 1.5, 3, and 4.5 mg/mL glucose, but cell viability was diminished and cell density decreased after exposure to glucose at 6 and 7.5 mg/mL for 48 h. Cell viability showed an increasing and then decreasing quadratic response to increasing glucose concentration in culture (r2 = 0.688, P < 0.001). The cell viability of theca cells cultured with 4.5 mg/mL glucose was greater than those cultured with 1, 1.5, 6, and 7.5 mg/mL glucose (P < 0.05). The concentration of estradiol in the medium containing 3 mg/mL glucose was higher than in medium containing 1, 1.5, and 6 mg/mL glucose (P < 0.05). There was an increasing and then decreasing quadratic correlation between progesterone concentrations and glucose concentrations (r2 = 0.522, P = 0.002). The concentration of progesterone in medium with 4.5 mg/mL glucose was higher than in medium with 1 and 7.5 mg/mL glucose (P < 0.05). There was an increasing and then decreasing quadratic correlation between the relative expression of CREB1 (r2 = 0.752, P < 0.001), StAR (r2 = 0.456, P = 0.002), CYP1B1 (r2 = 0.568, P < 0.001), and 3β-HSD (r2 = 0.319, P = 0.018) in theca cells of laying hens and glucose concentrations after treatment with different glucose concentrations for 48 h. After treatment with 4.5 mg/mL glucose, the expression of StAR, CYP1B1, and 3β-HSD genes were increased compared to treatment with 1, 1.5, 3, 6, and 7.5 mg/mL glucose (P < 0.001). There was an increasing and then decreasing quadratic correlation between glucose concentrations and protein expression of CREB1 (r2 = 0.819, P < 0.001), StAR (r2 = 0.844, P < 0.001), 3β-HSD (r2 = 0.801, P < 0.001), and CYP11A1 (r2 = 0.800, P < 0.001) in theca cells of laying hens. The protein expression of CREB1, StAR, and 3β-HSD in theca cells cultured with 4.5 mg/mL glucose was higher than in other groups (P < 0.001). The results indicate that the appropriate glucose concentration (4.5 mg/mL) can improve the synthesis of steroid hormones in theca cells of laying hens through the upregulation of key genes and proteins in the CREB/StAR signaling pathway.
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Affiliation(s)
- J Lu
- Jiangsu Institute of Poultry Sciences, Yangzhou 225125, China
| | - X Zhang
- Agricultural and Rural Bureau of Hanjiang District, Yangzhou 225100, China
| | - Q Wang
- Jiangsu Institute of Poultry Sciences, Yangzhou 225125, China
| | - M Ma
- Jiangsu Institute of Poultry Sciences, Yangzhou 225125, China
| | - Y F Li
- Jiangsu Institute of Poultry Sciences, Yangzhou 225125, China
| | - J Guo
- Jiangsu Institute of Poultry Sciences, Yangzhou 225125, China
| | - X G Wang
- Jiangsu Institute of Poultry Sciences, Yangzhou 225125, China
| | - T C Dou
- Jiangsu Institute of Poultry Sciences, Yangzhou 225125, China
| | - Y P Hu
- Jiangsu Institute of Poultry Sciences, Yangzhou 225125, China
| | - K H Wang
- Jiangsu Institute of Poultry Sciences, Yangzhou 225125, China
| | - L Qu
- Jiangsu Institute of Poultry Sciences, Yangzhou 225125, China.
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Souza-Fabjan JMG, Leal GR, Monteiro CAS, Batista RITP, Barbosa NO, Freitas VJF. In vitro embryo production in small ruminants: what is still missing? Anim Reprod 2023; 20:e20230055. [PMID: 38025995 PMCID: PMC10681138 DOI: 10.1590/1984-3143-ar2023-0055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 07/18/2023] [Indexed: 12/01/2023] Open
Abstract
In vitro embryo production (IVEP) is an extremely important tool for genetic improvement in livestock and it is the biotechnology that has grown the most recently. However, multiple ovulation followed by embryo transfer is still considered the leading biotechnology for embryo production in small ruminants. This review aimed to identify what is still missing for more efficient diffusion of IVEP in small ruminants, going through the IVEP steps and highlighting the main factors affecting the outcomes. Oocyte quality is essential for the success of IVEP and an aspect to be considered in small ruminants is their reproductive seasonality and strategies to mitigate the effect of season. The logistics for oocyte collection from live females is more complex than in cattle, and tools to simplify this collection system and/or to promote an alternative way of recovering oocytes may be an important point in this scenario. The heterogeneity of oocytes collected from growing follicles in live females or from ovaries collected from abattoirs remains a challenge, and there is a demand to standardize/homogenize the hormonal stimulatory protocols and IVM protocols for each source of oocytes. The use of sexed semen is technically possible, however the low market demand associated with the high costs of the sexing process prevents the routine use of this technique, but its higher availability is an important aspect aiming for greater dissemination of IVEP. New noninvasive approaches for embryo selection are key factors since the selection for transfer or cryopreservation is another difficulty faced among laboratories. Embryo selection is based on morphological traits, although these are not necessarily reliable in predicting pregnancy. Several issues described in this review must be considered by researchers in other to promote the diffusion of IVEP in small ruminants.
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Affiliation(s)
| | - Gabriela Ramos Leal
- Faculdade de Veterinária, Universidade Federal Fluminense, Niterói, RJ, Brasil
| | | | | | | | - Vicente José Figueirêdo Freitas
- Laboratório de Fisiologia e Controle da Reprodução, Faculdade de Veterinária, Universidade Estadual do Ceará, Fortaleza, CE, Brasil
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6
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Hayden CB, Sala RV, Pereira DC, Moreno JF, García-Guerra A. Effect of use and dosage of p-follicle-stimulating hormone for ovarian superstimulation before ovum pick-up and in vitro embryo production in pregnant Holstein heifers. J Dairy Sci 2023; 106:8110-8121. [PMID: 37641305 DOI: 10.3168/jds.2023-23576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 05/26/2023] [Indexed: 08/31/2023]
Abstract
The benefit of ovarian superstimulation using exogenous FSH before ovum pick-up (OPU) and in vitro embryo production (IVEP) has been the subject of conflicting results. The objective of the present study, therefore, was to evaluate the effect of use and dose of porcine FSH (p-FSH) before OPU/IVEP on ovarian response and embryo production in pregnant heifers. Pregnant Holstein heifers (n = 48) were randomly assigned to receive 0, 160, or 300 mg NIH-FSH-P1 in a crossover design. Ovum pick-up was performed at 49, 63, and 77 d of gestation with a 14 d "washout" between OPU sessions. Follicle ablation was performed on D 0 (p.m.) and p-FSH treatments, consisting of 4 decreasing dose injections administered 12 h apart, were initiated 36 h after follicle ablation (d 2 a.m.). Heifers underwent OPU on D 5 (a.m.), 40 h after the last p-FSH treatment, and cumulus oocyte complexes (COC) were subjected to IVEP procedures. Differences between treatment groups were evaluated using generalized linear mixed models. There were quadratic effects of treatment on both number and percentage of small (<6 mm), medium (6-10 mm), and large (>10 mm) follicles. Number and percentage of medium follicles increased with increasing p-FSH dosages, although the magnitude of the change was greater between 0 and 160 mg, than between 160 and 300 mg of p-FSH. Total number of follicles, number of COC recovered and number of viable COC increased linearly with increasing p-FSH dose. Conversely, there was no evidence for an effect of p-FSH dose on COC recovery percentage nor the percentage of viable COC. Cleavage percentage, number of cleaved oocytes, blastocyst percentage, and number of blastocysts increased linearly with increasing p-FSH dose. In conclusion, use of p-FSH before OPU resulted in greater superstimulatory response and oocyte competence which in turn increased IVEP. Furthermore, these effects were dose dependent such that use of a greater dose of p-FSH up to 300 mg progressively increased embryo yield.
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Affiliation(s)
- Cameron B Hayden
- Department of Animal Sciences, The Ohio State University, Columbus, OH 43210
| | - Rodrigo V Sala
- STgenetics, The Ohio Heifer Center, South Charleston, OH 45368
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7
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Walker SK, Kelly JM, Swinbourne AMS, Weaver AC, Kleemann DO. Ovarian follicle dynamics in ewes treated with intra-vaginal progesterone pessaries. 1. Follicle waves and parameters of the estrous cycle. Theriogenology 2023; 197:31-36. [PMID: 36463668 DOI: 10.1016/j.theriogenology.2022.11.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 10/17/2022] [Accepted: 11/24/2022] [Indexed: 11/27/2022]
Abstract
Progesterone treatment for synchrony of estrus is standard in sheep artificial insemination (AI) programs but can be associated with poor outcomes. Potential for improvement exists through a better understanding of the interactions between follicle development, luteal regression, emergence of the ovulatory follicle and timing of estrus. These interactions were examined by comparing progesterone-treated (Day 1 = day of pessary insertion) and naturally cycling ewes (Day 1 = day after estrus) at three times of the year (Autumn, Spring equinox and late Spring). Observations were made from Day 1 until the day of ovulation. Compared with the natural cycle, progesterone treatment (300 mg intra-vaginal pessary for 14 d) reduced the number of follicle waves (2.2 ± 0.18 versus 2.8 ± 0.12; P < 0.05) and increased the length of the ovulatory wave (8.6 ± 0.45 versus 6.6 ± 0.42 d; P < 0.05). The number of follicles per wave, the inter-wave interval and ovulation rate were not affected. However, progesterone treatment induced (P < 0.05) an earlier luteolysis (9.7 ± 0.51 versus 15.4 ± 0.49 d after Day 1), an earlier emergence of the ovulatory follicle (7.5 ± 0.48 versus 11.4 ± 0.46 d after Day 1) and an earlier onset of estrus (26.1 ± 2.95 versus 53.3 ± 2.84 h after Day 14). Time of year also influenced the response to progesterone treatment. In Autumn compared with the Spring equinox and late Spring, there was a reduction (P < 0.05) in follicle wave number (2.4 ± 0.21 versus 2.5 ± 0.29 versus 3.0 ± 0.20 respectively), follicles per wave (2.6 ± 0.27 versus 3.5 ± 0.25 versus 3.2 ± 0.20 respectively), ovulation rate (1.6 ± 0.12 versus 1.9 ± 0.12 versus 2.0 ± 0.10 respectively) and the inter-wave interval was longer (5.3 ± 0.40 versus 4.0 ± 0.32 versus 3.8 ± 0.27 d respectively; P < 0.05). Time of year also influenced (P < 0.05) the time of luteolysis (earliest in late Spring), emergence of the ovulatory follicle (earliest in Autumn) and onset of estrus (earliest in Autumn). It is concluded that (1) the effects of progesterone treatment on follicle waves are relatively minor, (2) the effects of treatment on timing of luteolysis, emergence of the ovulatory follicle and onset of estrus are all significant although the effects on AI outcomes remain to be determined and (3) time of year has a minimal effect on follicle waves but a more significant effect on other parameters of the estrous cycle. A better understanding of these complexities will assist in the development of improved protocols for synchrony of estrus.
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Affiliation(s)
- Simon K Walker
- Turretfield Research Centre, South Australian Research and Development Institute, Rosedale, South Australia, 5350, Australia.
| | - Jennifer M Kelly
- Turretfield Research Centre, South Australian Research and Development Institute, Rosedale, South Australia, 5350, Australia.
| | - Alyce M S Swinbourne
- Turretfield Research Centre, South Australian Research and Development Institute, Rosedale, South Australia, 5350, Australia.
| | - Alice C Weaver
- Turretfield Research Centre, South Australian Research and Development Institute, Rosedale, South Australia, 5350, Australia.
| | - David O Kleemann
- Turretfield Research Centre, South Australian Research and Development Institute, Rosedale, South Australia, 5350, Australia.
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Pinheiro JBS, Figueira LM, Correia LFL, Oliveira TA, Brair VL, Barros FFPC, Ascoli FO, Batista RITP, Brandão FZ, Souza-Fabjan JMG. The coasting time affects the quality of cumulus-oocyte complexes in superstimulated ewes. Theriogenology 2023; 196:236-243. [PMID: 36434845 DOI: 10.1016/j.theriogenology.2022.11.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 11/17/2022] [Accepted: 11/17/2022] [Indexed: 11/19/2022]
Abstract
We hypothesized that the coasting time may be beneficial to the quality of cumulus-oocyte complexes recovered from live ewes, as reported in cattle. The present study assessed the effect of coasting times on the quantity and quality of cumulus-oocyte complexes (COCs) in sheep. All ewes were subjected to the "Day 0 protocol", followed by an ovarian stimulation (80 mg of pFSH in three decreasing doses), varying only the coasting time [12 (G12), 36 (G36), or 60 h (G60]. In Experiment 1, data regarding follicular population was assessed. In Experiment 2, the COC quality was checked by their morphology, brilliant cresyl blue (BCB) test, evaluation of chromatin condensation pattern, and oocyte diameter. In Experiment 3, genes related to oocyte developmental competence were evaluated in BCB + COCs. The oocytes in the G60 group had more (P < 0.05) large follicles than the other groups and oocytes with a greater diameter than the G12. Oocyte morphology was similar (P > 0.05) among groups, as well as the BCB + COCs quantity. The G60-oocytes presented a better (P < 0.05) configuration of chromatin condensation compared with the other groups and a greater (P < 0.05) gene expression of BMP15, MATER, ZAR1, and PTGS2 compared with G12, and PTGS2 and HAS2 compared with G36 group. In conclusion, 60 h of coasting time positively affects the quality of COCs recovered after subjecting ewes to the "Day 0 protocol" and ovarian superstimulation. Implementing the appropriate coasting time to a given protocol can positively impact the in vitro embryo production outcomes in sheep.
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Affiliation(s)
- Jasmine B S Pinheiro
- Faculdade de Veterinária, Universidade Federal Fluminense UFF, Niterói, RJ, Brazil
| | - Lucas M Figueira
- Faculdade de Veterinária, Universidade Federal Fluminense UFF, Niterói, RJ, Brazil
| | - Lucas F L Correia
- Faculdade de Veterinária, Universidade Federal Fluminense UFF, Niterói, RJ, Brazil
| | - Thais A Oliveira
- Faculdade de Veterinária, Universidade Federal Fluminense UFF, Niterói, RJ, Brazil
| | - Viviane L Brair
- Faculdade de Veterinária, Universidade Federal Fluminense UFF, Niterói, RJ, Brazil
| | - Felipe F P C Barros
- Departamento de Medicina e Cirurgia Veterinária, Universidade Federal Rural do Rio de Janeiro UFRRJ, Seropédica, RJ, Brazil
| | - Fabio O Ascoli
- Faculdade de Veterinária, Universidade Federal Fluminense UFF, Niterói, RJ, Brazil
| | - Ribrio I T P Batista
- Faculdade de Veterinária, Universidade Federal Fluminense UFF, Niterói, RJ, Brazil
| | - Felipe Z Brandão
- Faculdade de Veterinária, Universidade Federal Fluminense UFF, Niterói, RJ, Brazil
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9
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Progestogen supplementation during superovulation leads to higher embryo viability and TGFB1 gene expression in sheep. Anim Reprod Sci 2022; 238:106938. [DOI: 10.1016/j.anireprosci.2022.106938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 12/15/2021] [Accepted: 01/30/2022] [Indexed: 11/22/2022]
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10
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Dehkordi RS, Mirzaei A, Boostani A. Reproductive efficiency of treated Karakul ewes with short-term progesterone and hCG injections during the non-breeding and breeding seasons. Anim Reprod Sci 2022; 239:106969. [DOI: 10.1016/j.anireprosci.2022.106969] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 03/10/2022] [Accepted: 03/11/2022] [Indexed: 11/16/2022]
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11
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Zhang Y, Gong S, Su Y, Yao M, Liu X, Gong Z, Sui H, Luo M. Follicular development in livestock: Influencing factors and underlying mechanisms. Anim Sci J 2021; 92:e13657. [PMID: 34796578 DOI: 10.1111/asj.13657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 09/23/2021] [Accepted: 10/26/2021] [Indexed: 12/01/2022]
Abstract
Livestock farming development has become increasingly important in recent years. It not only provides us with meat nutrition and pet feeding but also increases the economic value by providing numerous employment opportunities, which improves our life quality. The livestock farming development depends on successful animal reproduction. As a vital process in animal reproduction, folliculogenesis and its influencing factors as well as their underlying mechanisms need to be understood thoroughly. This review is aimed at summarizing the factors such as cellular processes, gene regulation, noncoding RNAs and other endocrine or paracrine regulatory factors that affect follicular development, and their underlying mechanisms of action in livestock in order to provide novel insights for future studies. The above factors were found as significant determinants influencing the follicular development in livestock through various signaling pathways.
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Affiliation(s)
- Yanjun Zhang
- College of Animal Science and Veterinary, Shandong Agricultural University, Tai'an, China.,Jiaxiang County Animal Husbandry and Veterinary Bureau, Jining, China
| | - Shuai Gong
- College of Animal Science and Veterinary, Shandong Agricultural University, Tai'an, China
| | - Yanping Su
- Department of Histology and Embryology, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an, China
| | - Minhua Yao
- Department of Histology and Embryology, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an, China
| | - Xiaocui Liu
- Department of Histology and Embryology, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an, China
| | - Zhaoqing Gong
- Department of Histology and Embryology, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an, China
| | - Hongshu Sui
- Department of Histology and Embryology, Shandong First Medical University & Shandong Academy of Medical Sciences, Tai'an, China
| | - Mingjiu Luo
- College of Animal Science and Veterinary, Shandong Agricultural University, Tai'an, China
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Nawaz M, Saleem M, Ullah F, Shabbir Khan G, Zahoor I, Ahmad N, Riaz A. Exogenous progesterone-dependent modulation in the follicular dynamics of Bos indicus cattle undergoing repeated ovum pick-up sessions. Reprod Domest Anim 2021; 57:55-63. [PMID: 34670003 DOI: 10.1111/rda.14028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Accepted: 10/11/2021] [Indexed: 10/20/2022]
Abstract
The objective of the present study was to evaluate the role of serum progesterone (P4) in follicular dynamics, oocytes' recovery and quality and their in vitro developmental competence during consecutive ovum pick-up (OPU) sessions in Bos indicus dairy cows. Wave-synchronized Sahiwal cattle (n = 20) were randomly divided into treatment (n = 10) and control (n = 10) groups. CIDR was used as a source of external progesterone in the treatment group. Four consecutive OPU sessions at 96-hr intervals were conducted and repeated ultrasonography at 12-hr intervals was done to monitor follicular dynamics. The viable oocytes were processed for IVC following IVM and IVF until day 7. The serum P4 concentrations in the P4 and control groups were recorded as 2.31 ± 0.059 versus.0.32 ± 0.065 ng/ml, respectively (p < .05). In the treatment group, the total number of recorded follicles was higher (p < .05; 12.05 ± 0.37 versus. 10.87 ± 0.40), whilst the growth rate (mm/day) of follicles was lower (p > .05). Per session recovered oocytes (5.31 ± 0.19 versus. 3.58 ± 0.21; p < .0001) and recovery rate (54.23 versus. 42.53%; p < .05) were also higher in the treatment group compared to control. Similarly, the viable oocytes (4.54 ± 0.187 versus. 3.06 ± 0.199) and the number of grade I and II oocytes per session (3.37 ± 0.196 versus. 2.06 ± 0.21) were higher (p < .05) in the treatment group compared with the control group. However, the nuclear maturation, cleavage, and blastocyst rate did not differ (p > .05) between the groups. Taken together, during OPU sessions, serum P4 improves oocytes' recovery and quality, whilst does not affect the in vitro developmental competence of recovered oocytes.
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Affiliation(s)
- Mudussar Nawaz
- Department of Theriogenology, Faculty of Veterinary Science, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Muhammad Saleem
- Department of Theriogenology, Faculty of Veterinary Science, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Farid Ullah
- Department of Theriogenology, Faculty of Veterinary Science, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Ghulam Shabbir Khan
- Department of Theriogenology, Faculty of Veterinary Science, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Imran Zahoor
- Department of Livestock Production, Faculty of Animal Production and Technology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Nasim Ahmad
- Department of Theriogenology, Faculty of Veterinary Science, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Amjad Riaz
- Department of Theriogenology, Faculty of Veterinary Science, University of Veterinary and Animal Sciences, Lahore, Pakistan
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Qi J, Li J, Wang Y, Wang W, Zhu Q, He Y, Lu Y, Wu H, Li X, Zhu Z, Ding Y, Xu R, Sun Y. Novel role of CXCL14 in modulating STAR expression in luteinized granulosa cells: implication for progesterone synthesis in PCOS patients. Transl Res 2021; 230:55-67. [PMID: 33129993 DOI: 10.1016/j.trsl.2020.10.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 10/15/2020] [Accepted: 10/24/2020] [Indexed: 12/19/2022]
Abstract
Polycystic ovary syndrome (PCOS) is one of the most common endocrine disorders in reproductive-age women. Reduced progesterone levels are associated with luteal phase deficiency in women with PCOS. The levels of C-X-C motif chemokine ligand-14 (CXCL14) were previously reported to be decreased in human-luteinized granulosa (hGL) cells derived from PCOS patients. However, the function of CXCL14 in hGL cells and whether CXCL14 affects the synthesis of progesterone in hGL cells remain unclear. In the present study, the levels of CXCL14 were reduced in follicular fluid and hGL cells in PCOS patients, accompanied by decreased progesterone levels in follicular fluid and decreased steroidogenic acute regulatory (STAR) expression in hGL cells. CXCL14 administration partially reversed the low progesterone production and STAR expression in hGL cells obtained from PCOS patients. In primary hGL cells, CXCL14 upregulated STAR expression and progesterone production. CXCL14 activated the phosphorylation of cyclic adenosine monophosphate response element-binding protein (CREB) and CREB inhibitor attenuated the modulation of StAR expression by CXCL14. P38 and Jun N-terminal kinase (JNK) pathways were also activated by CXCL14 and inhibition of p38 and JNK attenuated the increase of phosphorylation of CREB, STAR expression and progesterone production caused by CXCL14. Our findings revealed the novel role of CXCL14 in upregulation of STAR expression and progesterone synthesis through CREB phosphorylation via activation of p38 and JNK pathways in hGL cells. This is likely contributing to the dysfunction in steroidogenesis in granulosa cells from PCOS patients.
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Affiliation(s)
- Jia Qi
- Center for Reproductive Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China
| | - Jiaxing Li
- Center for Reproductive Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China
| | - Yuan Wang
- Center for Reproductive Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China
| | - Wangsheng Wang
- Center for Reproductive Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China
| | - Qinling Zhu
- Center for Reproductive Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China
| | - Yaqiong He
- Center for Reproductive Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China
| | - Yao Lu
- Center for Reproductive Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China
| | - Hasiximuke Wu
- Center for Reproductive Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China
| | - Xinyu Li
- Center for Reproductive Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China
| | - Zhenyi Zhu
- Center for Reproductive Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China
| | - Ying Ding
- Center for Reproductive Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China
| | - Rui Xu
- Center for Reproductive Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China
| | - Yun Sun
- Center for Reproductive Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China; Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China.
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14
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Gonzalez-Bulnes A, Menchaca A, Martin GB, Martinez-Ros P. Seventy years of progestagen treatments for management of the sheep oestrous cycle: where we are and where we should go. Reprod Fertil Dev 2021; 32:441-452. [PMID: 31972122 DOI: 10.1071/rd18477] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Accepted: 08/10/2019] [Indexed: 01/08/2023] Open
Abstract
Management of the ovine oestrous cycle is mainly based on the use of exogenous hormones to mimic or enhance (progesterone and its analogues) or manipulate (prostaglandin F2α and its analogues) the activity of the corpus luteum, combined with the application of other hormones mimicking the pituitary secretion of gonadotrophins (e.g. equine chorionic gonadotrophin). These protocols have been applied without major change for decades but, now, there are two reasons to reconsider them: (1) our greatly improved knowledge of the dynamics of ovarian physiology, following the application of transrectal ultrasonography, indicates that modification of the protocols may improve fertility yields and (2) increasing concerns about animal health and welfare, food safety and the environmental impact of the treatments, as evidenced by public opinion and therefore market forces. Here, we offer an overview of these issues, introduce an updated protocol and suggest ways for future improvements to the protocols.
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Affiliation(s)
- Antonio Gonzalez-Bulnes
- Departamento de Reproduccion Animal, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria, Avenida, Puerta de Hierro, s/n, 28040, Madrid, Spain; and Departamento de Toxicologia y Farmacologia, Facultad de Veterinaria, Universidad Complutense de Madrid, Ciudad Universitaria, s/n, 28040, Madrid, Spain; and Corresponding author.
| | - Alejo Menchaca
- Instituto de Reproducción Animal Uruguay, Fundación Instituto de Reproduccion Animal del Uruguay, Camino Cruz del Sur 2350, Montevideo, Uruguay; and Programa de Posgrado, Facultad de Veterinaria, Universidad de la República, Avenida Lasplaces, 1550, Montevideo, Uruguay
| | - Graeme B Martin
- Institute of Agriculture, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia
| | - Paula Martinez-Ros
- Departamento de Produccion y Sanidad Animal, Facultad de Veterinaria, Universidad Cardenal Herrera- Centro de Estudios Universitarios (CEU), CEU Universities, C/ Tirant lo Blanc, 7. 46115 Alfara del Patriarca Valencia, Spain
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15
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Souza-Fabjan JMG, Batista RITP, Correia LFL, Paramio MT, Fonseca JF, Freitas VJF, Mermillod P. In vitro production of small ruminant embryos: latest improvements and further research. Reprod Fertil Dev 2021; 33:31-54. [PMID: 38769678 DOI: 10.1071/rd20206] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024] Open
Abstract
This review presents the latest advances in and main obstacles to the application of invitro embryo production (IVEP) systems in small ruminants. This biotechnology is an extremely important tool for genetic improvement for livestock and is essential for the establishment of other biotechnologies, such as cloning and transgenesis. At present, the IVEP market is almost non-existent for small ruminants, in contrast with the trends observed in cattle. This is probably related to the lower added value of small ruminants, lower commercial demand and fewer qualified professionals interested in this area. Moreover, there are fewer research groups working on small ruminant IVEP than those working with cattle and pigs. The heterogeneity of oocytes collected from growing follicles in live females or from ovaries collected from abattoirs remains a challenge for IVEP dissemination in goats and sheep. Of note, although the logistics of oocyte collection from live small ruminant females are more complex than in the bovine, in general the IVEP outcomes, in terms of blastocyst production, are similar. We anticipate that after appropriate training and repeatable results, the commercial demand for small ruminant invitro -produced embryos may increase.
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Affiliation(s)
- Joanna M G Souza-Fabjan
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, Niterói-RJ, CEP 24230-340, Brazil; and Corresponding author
| | - Ribrio I T P Batista
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, Niterói-RJ, CEP 24230-340, Brazil
| | - Lucas F L Correia
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, Niterói-RJ, CEP 24230-340, Brazil
| | - Maria Teresa Paramio
- Departament de Ciencia Animal i dels Aliments, Facultat de Veterinaria, Universitat Autonoma de Barcelona, 08193 Cerdanyola del Valles, Barcelona, Spain
| | - Jeferson F Fonseca
- Embrapa Caprinos e Ovinos, Rodovia MG 133, km 42, Campo Experimental Coronel Pacheco, Coronel Pacheco-MG, CEP 36155-000, Brazil
| | - Vicente J F Freitas
- Laboratório de Fisiologia e Controle da Reprodução, Universidade Estadual do Ceará, Fortaleza-CE, CEP 60714-903, Brazil
| | - Pascal Mermillod
- Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement (INRAE), UMR7247, Physiologie de la Reproduction et des Comportements, Nouzilly, France
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16
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Bragança GM, Batista RITP, Souza-Fabjan JMG, Alfradique VAP, Arashiro EKN, Pinto PHN, Santos JDR, Camargo LSA, Menchaca A, da Fonseca JF, Brandão FZ. Exogenous progestogens differentially alter gene expression of immature cumulus-oocyte complexes in sheep. Domest Anim Endocrinol 2021; 74:106518. [PMID: 32711283 DOI: 10.1016/j.domaniend.2020.106518] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 06/04/2020] [Accepted: 06/24/2020] [Indexed: 11/29/2022]
Abstract
This study evaluated the role of progesterone (P4) and medroxyprogesterone acetate (MAP) on the molecular status of immature cumulus-oocyte complexes (COCs) and the implications for oocyte quality in sheep. The number of viable COCs per ewe and the rate of COCs screened for developmental competence by brilliant cresyl blue positive (BCB+) were similar (P > 0.05), respectively, across treatments (P4: 7.7 ± 0.7 and 4.7 ± 1.2; MAP: 5.7 ± 1.0 and 3.5 ± 2.3; and control: 5.7 ± 1.1 and 3.6 ± 2.4). The COCs' gene expression was altered by exogenous progestogens compared with the control group: markers of steroidogenic pathway (FSH receptor [FSHr], LH receptor [LHr], and estradiol receptor α) and of quality (zygote arrest 1, growth differentiation factor 9, and B-cell lymphoma 2) were in abundance in P4 (P < 0.05). In addition, reelin protein (RELN) was downregulated, and Bcl-2 was upregulated in MAP (P < 0.05). In the P4 vs MAP comparison, FSHr, LHr, and RELN genes were upregulated (P < 0.05) in the P4 group. In conclusion, P4 and MAP promoted dissimilar effects on transcriptome profiling of immature BCB-selected COCs, possibly due to the differences in the chemical structure of progestogens and concentrations of serum P4. Exogenous P4 impacted positively on the profile of genes related to oocyte quality.
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Affiliation(s)
- G M Bragança
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro 24320-340, Brazil.
| | - R I T P Batista
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro 24320-340, Brazil
| | - J M G Souza-Fabjan
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro 24320-340, Brazil
| | - V A P Alfradique
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro 24320-340, Brazil
| | - E K N Arashiro
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro 24320-340, Brazil
| | - P H N Pinto
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro 24320-340, Brazil
| | - J D R Santos
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro 24320-340, Brazil
| | - L S A Camargo
- Embrapa Gado de Leite, Rua Eugênio do Nascimento, 610, Juiz de Fora, Minas Gerais 36038-330, Brazil
| | - A Menchaca
- Fundacion IRAUy, Cno. Cruz del Sur 2250, Montevideo 12200, Uruguay
| | - J F da Fonseca
- Embrapa Caprinos e Ovinos, Estrada Sobral/Groaíras, km 04, CP 145, Sobral, Ceará 62010-970, Brazil
| | - F Z Brandão
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro 24320-340, Brazil
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17
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Año-Perello A, Santos-Jimenez Z, Encinas T, Martinez-Ros P, Gonzalez-Bulnes A. Use of GnRH for Synchronization of the Follicular Wave in Assisted Reproductive Technologies in Sheep: A Preliminary Study. Animals (Basel) 2020; 10:E1208. [PMID: 32708594 PMCID: PMC7401646 DOI: 10.3390/ani10071208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 06/28/2020] [Accepted: 07/13/2020] [Indexed: 11/16/2022] Open
Abstract
The present study aimed to set up a short-term protocol for synchronization of follicular wave emergence in sheep, concomitant with estrus synchronization, which would improve ovarian response in assisted reproductive technologies. Administration of a single GnRH dose, concomitant with the insertion of a progesterone-loaded CIDR device, caused regression of gonadotrophin-dependent follicles ≥4 mm in all the GnRH-treated sheep and in around 80% of the controls treated only with CIDR (p < 0.05). Similar percentages of ewes lost all follicles (around 70%) or only the largest one (around 30%) in both groups. Hence, 54.1% and 70% of the sheep lost all large follicles and initiated a new follicular wave in the control and GnRH groups, respectively (p < 0.05). The remaining sheep showed follicles that were still not dependent of luteinizing hormone (LH). So, in fact, all the sheep had non-dominant follicles after treatment. In conclusion, a treatment including GnRH at CIDR insertion would offer a time- and cost-efficient protocol for inducing follicular turnover and synchronizing a new follicular wave at any stage of the estrous cycle.
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Affiliation(s)
- Aina Año-Perello
- Departamento de Produccion y Sanidad Animal, Facultad de Veterinaria, Universidad Cardenal Herrera-CEU, CEU Universities, C/ Tirant lo Blanc, 7. 46115 Alfara del Patriarca Valencia, Spain; (A.A.-P.); (A.G.-B.)
| | - Zurisaday Santos-Jimenez
- Departamento Ciencias Medico Veterinarias, Universidad Autónoma Agraria Antonio Narro, Torreón, 25315 Coahuila, Mexico;
- Departamento de Farmacologia y Toxicologia Facultad de Veterinaria, UCM, Ciudad Universitaria s/n, 28040 Madrid, Spain;
| | - Teresa Encinas
- Departamento de Farmacologia y Toxicologia Facultad de Veterinaria, UCM, Ciudad Universitaria s/n, 28040 Madrid, Spain;
| | - Paula Martinez-Ros
- Departamento de Produccion y Sanidad Animal, Facultad de Veterinaria, Universidad Cardenal Herrera-CEU, CEU Universities, C/ Tirant lo Blanc, 7. 46115 Alfara del Patriarca Valencia, Spain; (A.A.-P.); (A.G.-B.)
| | - Antonio Gonzalez-Bulnes
- Departamento de Produccion y Sanidad Animal, Facultad de Veterinaria, Universidad Cardenal Herrera-CEU, CEU Universities, C/ Tirant lo Blanc, 7. 46115 Alfara del Patriarca Valencia, Spain; (A.A.-P.); (A.G.-B.)
- Departamento de Farmacologia y Toxicologia Facultad de Veterinaria, UCM, Ciudad Universitaria s/n, 28040 Madrid, Spain;
- Departamento de Reproduccion Animal, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Avda. Puerta de Hierro s/n. 28040-Madrid, Spain
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18
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Bragança GM, Souza-Fabjan JMG, Ribeiro LS, Brair VL, Côrtes LR, Souza CV, Batista RITP, Fonseca JF, Menchaca A, Brandão FZ. Exogenous progestogen does not affect first-wave follicle populations and oocyte quality during ovarian stimulation with FSH in sheep. Domest Anim Endocrinol 2020; 72:106369. [PMID: 31445776 DOI: 10.1016/j.domaniend.2019.06.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Revised: 05/19/2019] [Accepted: 06/04/2019] [Indexed: 11/20/2022]
Abstract
The effect of short-term administration of medroxyprogesterone acetate (MPA) or natural progesterone (P4) during ovarian stimulation with FSH on oocyte recovery was investigated in Santa Inês ewes. Ewes were treated with an intravaginal sponge containing MPA for 6 d; GnRH was applied 36 h after sponge removal and FSH was given in 3 injections (40, 24, and 16 mg, respectively) every 12 h after (D0, approximate ovulation time). At the first FSH dose, the ewes received either a new MPA sponge (n = 10) or a controlled device for internal release impregnated with P4 (n = 10) or did not receive any device (n = 10). Ovarian dynamics were assessed every 12 h by transrectal ultrasonography from D-3 to D2. Oocytes were recovered by laparoscopic ovum pick-up (LOPU) on D2 and graded by morphologic quality. The number of small, medium, and large follicles at D0 and D2 (ultrasound examinations), number of both follicles aspirated and oocytes recovered at LOPU, recovery rate, and oocyte grade did not differ (P > 0.05) among treatments. Thus, the short-term use of MPA or P4 during ovarian stimulation did not affect the first-wave follicle population or morphologic quality of oocytes. We would suggest that, in this protocol, the use of exogenous progestin is unnecessary.
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Affiliation(s)
- G M Bragança
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro CEP 24320-340, Brazil.
| | - J M G Souza-Fabjan
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro CEP 24320-340, Brazil
| | - L S Ribeiro
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro CEP 24320-340, Brazil
| | - V L Brair
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro CEP 24320-340, Brazil
| | - L R Côrtes
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro CEP 24320-340, Brazil
| | - C V Souza
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro CEP 24320-340, Brazil
| | - R I T P Batista
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro CEP 24320-340, Brazil
| | - J F Fonseca
- Embrapa Caprinos e Ovinos, Estrada Sobral/Groaíras, km 04, CP 145, Sobral, Ceará CEP 62010-970, Brazil
| | - A Menchaca
- Fundacion IRAUy, Cno. Cruz del Sur, 2250 CP, Montevideo 12200, Uruguay
| | - F Z Brandão
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil, 64, Niterói, Rio de Janeiro CEP 24320-340, Brazil
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19
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Chantepie L, Bodin L, Sarry J, Woloszyn F, Plisson-Petit F, Ruesche J, Drouilhet L, Fabre S. Genome-Wide Identification of a Regulatory Mutation in BMP15 Controlling Prolificacy in Sheep. Front Genet 2020; 11:585. [PMID: 32636872 PMCID: PMC7317000 DOI: 10.3389/fgene.2020.00585] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 05/14/2020] [Indexed: 12/30/2022] Open
Abstract
The search for the genetic determinism of prolificacy variability in sheep has evidenced several major mutations in genes playing a crucial role in the control of ovulation rate. In the Noire du Velay (NV) sheep population, a recent genetic study has evidenced the segregation of such a mutation named FecL L . However, based on litter size (LS) records of FecL L non-carrier ewes, the segregation of a second prolificacy major mutation was suspected in this population. In order to identify this mutation, we have combined a case/control genome-wide association study with ovine 50k SNP chip genotyping, whole genome sequencing, and functional analyses. A new single nucleotide polymorphism (OARX:50977717T > A, NC_019484) located on the X chromosome upstream of the BMP15 gene was evidenced to be highly associated with the prolificacy variability (P = 1.93E-11). The variant allele was called FecX N and shown to segregate also in the Blanche du Massif Central (BMC) sheep population. In both NV and BMC, the FecX N allele frequency was estimated close to 0.10, and its effect on LS was estimated at +0.20 lamb per lambing at the heterozygous state. Homozygous FecX N carrier ewes were fertile with increased prolificacy in contrast to numerous mutations affecting BMP15. At the molecular level, FecX N was shown to decrease BMP15 promoter activity and supposed to impact BMP15 expression in the oocyte. This regulatory action was proposed as the causal mechanism for the FecX N mutation to control ovulation rate and prolificacy in sheep.
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Affiliation(s)
| | | | | | | | | | | | | | - Stéphane Fabre
- GenPhySE, Université de Toulouse, INRAE, ENVT, Castanet-Tolosan, France
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20
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Aller JF, Abalos MC, Acuña F, Cancino AK. Plasma steroid profiles and ovarian response in llamas treated with eCG for superovulation combined with exogenous progesterone during early luteal phase. Anim Reprod Sci 2019; 208:106108. [PMID: 31405462 DOI: 10.1016/j.anireprosci.2019.106108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 06/03/2019] [Accepted: 06/24/2019] [Indexed: 11/29/2022]
Abstract
The objective of this study was to evaluate the effects of plasma progesterone (P4) concentrations during eCG-ovarian follicular superstimulatory treatment performed in early luteal phase and estradiol concentrations during peri-ovulatory period on ovarian response, number and embryo quality. On Day -2, females (n = 75) having a follicle ≥7 mm were treated with GnRH to induce ovulation. On Day 0, females that had ovulations (n = 54) were treated with 1000 IU eCG and were assigned to one of two treatments: (1) intravaginal device (ID) containing 0.5 g P4 (P4 group) and (2) no ID (Control group). On Day 5, females were administered PGF2α and the ID was removed. On Day 7 and 8, females were mated and embryo recovery was performed 7 or 8 days later. Blood samples were collected from Day 0 to 9. Number (± SD) of follicles ≥7 mm on day of mating was greater (P = 0.04) in the control (9.7 ± 4.2) than P4-treated (6.7 ± 4.9) group; number of corpora lutea did not differ (5.5 ± 3.1 and 5.2 ± 3.4 respectively). Ovulation rate was greater (P < 0.01) in the P4-group (77.4%; 130/168) than control group (53.3%; 135/253). Number of embryos with an excellent grade (grade 1) tended to be greater (P = 0.07) in the P4-group (82.4%; 42/51) than control group (65.4%; 36/55). It was concluded that supplementation with exogenous P4 during eCG treatment in early luteal phase inhibits excessive follicular growth, increases ovulation rate and improves embryo quality.
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Affiliation(s)
- Juan F Aller
- Instituto Nacional de Tecnología Agropecuaria (INTA), Estación Experimental Agropecuaria Balcarce, 7620, Balcarce, Argentina.
| | - Marcos C Abalos
- INTA, Estación Experimental Agropecuaria Abra Pampa, Argentina
| | - Francisco Acuña
- INTA, Estación Experimental Agropecuaria Abra Pampa, Argentina
| | - Andrea K Cancino
- INTA, Estación Experimental Agropecuaria Bariloche, 8400, Bariloche, Argentina
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