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Pereira RG, Pires OS, Hoefle CA, Fritzen A, Fiordalisi G, Ferst JG, de Oliveira FC, Vieira AD, Mondadori RG, Maggi G, Rovani MT, Gasperin BG, Gonçalves PB, Ferreira R. GnRH analogs induce a LH peak and increase pregnancy per timed-AI in ewes. Theriogenology 2024; 215:132-137. [PMID: 38065020 DOI: 10.1016/j.theriogenology.2023.12.003] [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: 08/11/2023] [Revised: 11/23/2023] [Accepted: 12/01/2023] [Indexed: 01/06/2024]
Abstract
To date, there have been no studies testing the capacity of GnRH analogs and respective doses to induce a LH peak in sheep. In this sense, the present study aimed to evaluate the capacity of different synthetic forms and doses of GnRH in inducing LH release in sheep, and the effect of GnRH administration at timed artificial insemination (TAI) on pregnancy per timed-AI. In experiment 1, ewes (n = 40) received an intravaginal device (IVD) of medroxyprogesterone acetate (MPA; 60 mg) for 7 d and prostaglandin F2α analog on Day 5. On Day 7, the ewes were allocated randomly into one of eight groups (n = 5/group), which received a GnRH analog at a specific dose, as follows: lecirelin (12.5 or 25 μg), gonadorelin (50 or 100 μg), buserelin acetate (4.2 or 8.4 μg), or deslorelin (375 or 750 μg). Blood samples for LH determination were obtained at 0, 2, 4, and 6 h after GnRH and the IVDs were removed after the last blood collection. The maximal LH concentration induced by gonadorelin at doses of 50 μg and 100 μg (12.0 ± 2.4 ng/mL and 28.6 ± 7.1 ng/mL, respectively) was lower (P < 0.05) than serum LH induced by 8.4 μg of buserelin (78.9 ± 12.9 ng/mL), 375 μg and 750 μg of deslorelin (75.6 ± 7.4 ng/mL and 72.1 ± 10.6 ng/mL, respectively) and 12.5 μg and 25 μg of lecirelin (73.3 ± 17.8 ng/mL and 61.6 ± 5.9 ng/mL, respectively). However, the maximal LH concentration induced by 4.2 μg of buserelin (49.4 ± 5.9 ng/mL) was similar (P > 0.05) to the 100 μg of gonadorelin. The total release of LH (area under the curve - AUC) after treatment with 50 μg of gonadorelin (31.7 ± 5.9 ng h/mL) was lower (P < 0.05) than after other agonists. In a second experiment, 330 ewes were treated with IVD containing MPA for 7 d. Simultaneously with IVD removal, 250 μg of cloprostenol and 200 IU of eCG were administered. Then, ewes were assigned randomly to either no further treatment (control); or to receive 4.2 μg of buserelin acetate (GnRH group) at cervical TAI, which was performed with fresh semen 54 h after IVD withdrawal in all the animals. Higher pregnancy per timed-AI was observed for GnRH (50.3 %) compared to control (40.7 %). We conclude that buserelin acetate (8.4 μg), lecirelin (12.5 and 25 μg) and deslorelin (375 and 750 μg) induced a greater stimulatory effect on LH secretion than gonadorelin treatment. Furthermore, buserelin acetate treatment at TAI increased pregnancy per timed-AI in ewes previously treated with MPA and eCG.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Gabriel Maggi
- Universidade Federal de Pelotas, Pelotas, RS, Brazil
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Piau TB, de Queiroz Rodrigues A, Paulini F. Insulin-like growth factor (IGF) performance in ovarian function and applications in reproductive biotechnologies. Growth Horm IGF Res 2023; 72-73:101561. [PMID: 38070331 DOI: 10.1016/j.ghir.2023.101561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 11/25/2023] [Accepted: 11/30/2023] [Indexed: 12/18/2023]
Abstract
The role of the insulin-like growth factor (IGF) system has attracted close attention. The activity of IGF binding proteins (IGFBPs) within the ovary has not been fully elucidated to date. These proteins bind to IGF with an equal, or greater, affinity than to the IGF1 receptor, thus being in the main position to regulate IGF signalling, in addition to extending the half-life of IGFs within the bloodstream and promoting IGF storage in specific tissue niches. IGF1 has an important part in cell proliferation, differentiation and apoptosis. Considering the importance of IGFs in oocyte maturation, this review sought to elucidate aspects including: IGF production mechanisms; constituent members of their family and their respective functions; the role that these factors play during folliculogenesis, together with their functions during oocyte maturation and apoptosis, and their performance during luteal development. This review also explores the role of IGFs in biotechnological applications, focusing specifically on animal genetic gain.
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Affiliation(s)
- Tathyana Benetis Piau
- University of Brasília, Institute of Biological Sciences, Department of Physiological Sciences, Brasília, DF 70910-900, Brazil
| | - Aline de Queiroz Rodrigues
- University of Brasília, Institute of Biological Sciences, Department of Physiological Sciences, Brasília, DF 70910-900, Brazil
| | - Fernanda Paulini
- University of Brasília, Institute of Biological Sciences, Department of Physiological Sciences, Brasília, DF 70910-900, Brazil.
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Bevilaqua JR, Rodriguez MGK, Maciel GS, Vergani GB, da Fonseca JF, Bartlewski PM, Oliveira MEF. Luteal Function, Biometrics, and Echotextural Attributes in Santa Inês Ewes Superovulated with Different Total Doses of Porcine Follicle-Stimulating Hormone. Animals (Basel) 2023; 13:ani13050873. [PMID: 36899731 PMCID: PMC10000133 DOI: 10.3390/ani13050873] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 02/15/2023] [Accepted: 02/24/2023] [Indexed: 03/04/2023] Open
Abstract
Premature regression of corpora lutea (PRCL) may adversely affect the outcome of hormonal ovarian superstimulation in small ruminants, and the total dose of exogenous gonadotropins used may be one of the causes of this condition. There were two major objectives of the present study: (1) to evaluate the effects of different superovulatory doses of porcine follicle-stimulating hormone (pFSH) on the biometry, blood perfusion (Doppler), and echotextural characteristics of luteal structures; and, (2) to determine the usefulness of biometric, vascular, and echotextural luteal variables, as well as measurements of circulating progesterone (P4) concentrations for early detection of PRCL in superovulated Santa Inês ewes. Twenty-seven Santa Inês ewes received an intravaginal P4-releasing device (CIDR) from Days 0 to 8 (Day 0 = random day of the anovulatory period). An IM injection of d-cloprostenol (37.5 μg) was given at the time of the CIDR insertion and withdrawal. On Day 6, all the ewes received 300 IU of eCG IM and were divided into three treatment groups (each n = 9): G100 (100 mg); G133 (133 mg); and G200 (200 mg of pFSH) administered IM every 12 h in eight injections. Transrectal ovarian ultrasonography and jugular blood sampling for serum P4 measurements were performed on Days 11 to 15. On the day of embryo recovery (Day 15), all the ewes underwent diagnostic videolaparoscopy and were classified, based on their luteal characteristics, into three response groups: nCL (ewes with normal CL only); rCL (ewes with regressing CL only); and ewes with both nCL and rCL following the superovulatory regimen. Our present results indicate that the total pFSH doses of 100 mg and 200 mg result in similar ovulatory responses and luteal function/biometrics, although the percentage of donor ewes with nCL was greater (p < 0.05) for G100 compared with the G200 animals. An application of 133 mg of pFSH was associated with diminished luteogenesis. Lastly, circulating P4 concentrations, ultrasonographic estimates of total luteal area, and CL pixel heterogeneity (standard deviation of numerical pixel values) are promising markers of luteal inadequacy in superovulated ewes.
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Affiliation(s)
- Júlia Ribeiro Bevilaqua
- Department of Pathology, Reproduction and One Health, School of Agricultural and Veterinarian Sciences, São Paulo State University, Jaboticabal 14884-900, SP, Brazil
| | - Mariana Garcia Kako Rodriguez
- Department of Pathology, Reproduction and One Health, School of Agricultural and Veterinarian Sciences, São Paulo State University, Jaboticabal 14884-900, SP, Brazil
| | - Giovanna Serpa Maciel
- Department of Pathology, Reproduction and One Health, School of Agricultural and Veterinarian Sciences, São Paulo State University, Jaboticabal 14884-900, SP, Brazil
| | - Gabriel Brun Vergani
- Department of Pathology, Reproduction and One Health, School of Agricultural and Veterinarian Sciences, São Paulo State University, Jaboticabal 14884-900, SP, Brazil
| | | | - Pawel Mieczyslaw Bartlewski
- Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, ON N1G 2W1, Canada
| | - Maria Emilia Franco Oliveira
- Department of Pathology, Reproduction and One Health, School of Agricultural and Veterinarian Sciences, São Paulo State University, Jaboticabal 14884-900, SP, Brazil
- Correspondence:
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Aybazov M, Selionova M, Trukhachev V, Malorodov V, Yuldashbayev Y, Easa AA. Embryo production and transplantation in non-breeding season of meat sheep breeds by stimulating superovulation with different follicle-stimulating hormone preparations. Reprod Domest Anim 2023; 58:230-237. [PMID: 36222218 DOI: 10.1111/rda.14279] [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: 08/26/2022] [Revised: 10/09/2022] [Accepted: 10/10/2022] [Indexed: 02/07/2023]
Abstract
The objective of this study was to investigate the response of Charolais and Ile-de-France meat sheep breeds to stimulate superovulation with various follicle-stimulating hormone (FSH) preparations. A total of 14 adult ewes of meat sheep breeds were used in our study as donors, including Charolais breed (n = 8) and Ile-de-France breed (n = 6). Donors ewes were randomly divided into two groups in equal numbers (first group, n = 7; second group, n = 7), every group included Charolais breed (n = 4) and Ile-de-France breed (n = 3). Ewes in the first group were treated with Folltropin-V (total dose of 200 mg per ewe, seven injections), and ewes in the second group were treated with FSH-P (total of 280 IU per ewe, six injections). Thirty-seven ewes of Edilbay breed used as recipients were divided into two groups (first group, n = 20; second group, n = 17). Our results showed that the number of corpora lutea in donor groups treated with Folltropin-V was significantly higher than in donor groups treated with FSH-P (p < .01). A greater number of embryos recovery and embryos suitable for transplantation were found in the first group compared with the second group of donors. After 30 days from transplantation, transabdominal ultrasonography showed that the presence of pregnancy in recipients groups was found in 16 recipient ewes (43.2%), in the first group of recipients were registered nine pregnant ewes of 20 recipient ewes (45.0%), and in the second group of recipients were registered seven pregnant ewes of 17 recipient ewes (41.2%). In conclusion, using Folltropin-V in Charolais and Ile-de-France meat sheep breeds is a more effective scheme for stimulating superovulation than using FSH-P.
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Affiliation(s)
- Magomet Aybazov
- Timiryazev Agricultural Academy, Russian State Agrarian University-Moscow, Moscow, Russia
| | - Marina Selionova
- Timiryazev Agricultural Academy, Russian State Agrarian University-Moscow, Moscow, Russia
| | - Vladimir Trukhachev
- Timiryazev Agricultural Academy, Russian State Agrarian University-Moscow, Moscow, Russia
| | - Victor Malorodov
- Timiryazev Agricultural Academy, Russian State Agrarian University-Moscow, Moscow, Russia
| | - Yusupjan Yuldashbayev
- Timiryazev Agricultural Academy, Russian State Agrarian University-Moscow, Moscow, Russia
| | - Ahmed A Easa
- Timiryazev Agricultural Academy, Russian State Agrarian University-Moscow, Moscow, Russia.,Department of Animal and Poultry Production, Faculty of Agriculture, Damanhour University, Damanhour, Egypt
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Dias JH, Vergani GB, Gonçalves JD, Oliveira TA, Penitente-Filho JM, Pereira VSA, Esteves SN, Garcia AR, Batista RITP, Oliveira MEF, Souza-Fabjan JMG, Fonseca JF. Different doses of pFSH are effective to promote follicular growth, superovulatory response, and embryo yield in White Dorper ewes. Small Rumin Res 2023. [DOI: 10.1016/j.smallrumres.2023.106914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Bruno-Galarraga MM, Fernandez J, Lacau-Mengido IM, Gonzalez-Bulnes A, Gibbons A, Cueto M. A simple method to select high superovulatory responder goats. Theriogenology 2023; 195:187-191. [DOI: 10.1016/j.theriogenology.2022.10.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 10/24/2022] [Accepted: 10/25/2022] [Indexed: 11/06/2022]
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Use of logistic models to evaluate the response of superovulation treatment and embryo production in Santa Inês ewes. Trop Anim Health Prod 2022; 54:276. [PMID: 36070151 DOI: 10.1007/s11250-022-03310-8] [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: 07/29/2021] [Accepted: 08/31/2022] [Indexed: 10/14/2022]
Abstract
The study aimed to verify the influence of the FecGE mutation in superovulated ewes and to evaluate the probability of logistic models to determine the response capacity of these ewes to superovulatory treatment. Santa Inês ewes (n = 29) were genotyped for the FecGE mutation and separated for their genotype group in carriers of the mutant E allele (FecGE/E, FecG+/E) and non-carrier (FecG+/+) alleles. The ewes underwent hormonal treatment for superovulation. Aside from the genotypes, variables included in the statistical model were reproductive status (empty, early lactation, or late lactation), age (> or < 6 years), and number of births (nulliparous, primiparous, multiparous). The carriers of the mutation could be discriminated from the non-carriers based on the number of corpora lutea, rate of frozen embryos, and fecundity. Recovery rate was significantly higher (P < 0.05) in FecGE/E (94.31%) compared to FecG+/E (63.15%) and FecG+/+ (61.90%) (P < 0.05), whereas fecundity rate of FecG+/+ ewes (50.76%) was significantly higher than FecG+/E (18.96%) and FecGE/E (32.53%) (P < 0.05). We determined in this study that the response to superovulation and embryo production can be discriminated between FecGE/E and FecG+/E ewes in relation to the FecG+/+ genotype. Logistic models that included reproductive status and mutation, or reproductive status and age, or reproductive status and number of births were effective in predicting the response to superovulatory treatment.
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Towards Improving the Outcomes of Multiple Ovulation and Embryo Transfer in Sheep, with Particular Focus on Donor Superovulation. Vet Sci 2022; 9:vetsci9030117. [PMID: 35324845 PMCID: PMC8953989 DOI: 10.3390/vetsci9030117] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 02/22/2022] [Accepted: 03/01/2022] [Indexed: 02/05/2023] Open
Abstract
Considerable improvements in sheep multiple ovulation and embryo transfer (MOET)protocols have been made; however, unlike for cattle, MOET is poorly developed in sheep, and thus has not been broadly applicable as a routine procedure. The tightly folded nature of the ewe cervix, the inconsistent ovarian response to various superovulatory treatments, and the requirement of labor to handle animals, particularly during large-scale production, has limited the implementation of successful MOET in sheep. Moreover, several extrinsic factors (e.g., sources, the purity of gonadotrophins and their administration) and intrinsic factors (e.g., breed, age, nutrition, reproductive status) severely limit the practicability of MOET in sheep and other domestic animals. In this review, we summarize the effects of different superovulatory protocols, and their respective ovarian responses, in terms of ovulation rate, and embryo recovery and transfer. Furthermore, various strategies, such as inhibin immunization, conventional superovulation protocols, and melatonin implants for improving the ovarian response, are discussed in detail. Other reproductive techniques and their relative advantages and disadvantages, such as artificial insemination (AI), and donor embryo recovery and transfer to the recipient through different procedures, which must be taken into consideration for achieving satisfactory results during any MOET program in sheep, are also summarized in this article.
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Ciornei ŞG, Drugociu D, Ciornei L, Roşca P. Ovarian response to P4-PGF-FSH treatment in Suffolk sheep and P4-PGF-PMSG synchronization in cross-bred ewes, for IVD and ET protocol. Vet Med Sci 2022; 8:726-734. [PMID: 35037413 PMCID: PMC8959288 DOI: 10.1002/vms3.705] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Background The success of an embryo transfer protocol in sheep depends on many factors, but the choice of drugs for the desired superovulation as well as the conception rate (CR) are most essential. Reproductive activity in sheep is characterized by a seasonality influenced by several factors such as photoperiod, latitude, temperature, nutrition and breed. Reproductive seasonality and nutritional condition are the main factors that influence embryo production in sheep. In sheep, some anatomical peculiarities limit the application of traditional reproductive biotechnologies used in cattle. Objectives The aim of this study was to conclude on the effectiveness of a wider on farm in vivo embryo transfer development programme in Suffolk sheep by streamlining hormone therapies and optimizing technique. Methods A total number of 60 sheep and three rams were included in this study, divided into two groups (receptors and donors). Donor Suffolk sheep were treated for superovulation using the P4‐PGF‐FSH multiple ovulation embryo transfer (MOET) protocol, while the cross‐bred recipients’ group was synchronized with P4‐PGF‐PMSG. Results On the first day after superovulation, all ovaries had more than five dominant follicles, while corpora lutea were later observed in 83.3% sheep. The recovery rate was 83.3%, while 72.9% embryos were transferable. Embryos were transferred directly into recipients. Fertility after 30 days was 68.57%, lambing rate was 91.6% and CR was 62.85%. This study showed that veterinary drugs (P4, FSH, LH, PMSG, PGF) used for superovulation optimized by us were capable of producing by this improved technique the optimization of the reproduction indices at embryo‐transfer (ET) and to be able to be used successfully. Conclusions The application of an MOET protocol has a positive effect in the production of in vivo embryo production (IVD) embryos in Suffolk sheep and can guarantee the success of embryo transfer activity to ewes with lower genetic merit. Our research aimed at representing a model for sheep farms for a rapid improvement of productive traits.
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Affiliation(s)
- Ştefan Gregore Ciornei
- Faculty of Veterinary Medicine, Department of Clinics, Reproduction, Iasi University of Life Sciences (IULS), Iasi, Romania
| | - Dan Drugociu
- Faculty of Veterinary Medicine, Department of Clinics, Reproduction, Iasi University of Life Sciences (IULS), Iasi, Romania
| | - Liliana Ciornei
- Faculty of Veterinary Medicine, Department of Clinics, Reproduction, Iasi University of Life Sciences (IULS), Iasi, Romania
| | - Petru Roşca
- Faculty of Veterinary Medicine, Department of Clinics, Reproduction, Iasi University of Life Sciences (IULS), Iasi, Romania
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Kolling A, Brilhante G, Drechmer J, Santos L, Silva B, Ramos A. Relationship between superovulation and embryo production with ovarian follicular population before superovulatory treatment in Brazilian Bergamasca sheep. ARQ BRAS MED VET ZOO 2021. [DOI: 10.1590/1678-4162-12105] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
ABSTRACT The objective of this study was to quantify the superovulatory response and embryo production of Brazilian Bergamasca sheep and to evaluate the link to the follicular condition before superovulatory treatment, as a reference for selection of donors with potential for superovulation. Follicular population of twenty-three sheep was evaluated by ultrasound during metestrus phase of the estrous cycle and divided into groups of low, medium and high follicular population. Subsequently, they were synchronized, superovulated with 133mg of pFSH, mated and subjected to embryo collection. The superovulatory response (9.0±3.3 vs 10.7±6.2 vs 13.8±7.1) and embryo production (4.0±3.8 vs 2.6±2.0 vs 1,8±4.0) were similar between groups (P>0.05). There was a positive correlation between the number of follicles during the metestrus phase and the number of corpus luteum with premature regression (PLR) (0.52) and a negative correlation between the recovery rate and PLR (-0.44) (P<0.05). The sheep that presented PLR had more follicles during metestrus (16.9±7.8 vs 12.7±3.2) and lower embryo recovery rate (38.8±29.3 vs 72.2±29.9) than those with functional CLs (P<0.05). Follicular quantification during metestrus phases was unable to identify donors with high embryo production. Animals with PLR had a larger follicular population during metestrus and lower embryo recovery rate.
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Affiliation(s)
| | - G.C. Brilhante
- Faculdades Integradas da União Educacional do Planalto Central, Brazil
| | | | | | - B.D.M. Silva
- Embrapa Recursos Genéticos e Biotecnologia, Brazil
| | - A.F. Ramos
- Embrapa Recursos Genéticos e Biotecnologia, Brazil
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Brasil OO, Moreira NH, Conceição FFCDBD, Souto PLG, Silva CMGD, Ramos AF. Synchronization of follicular wave emergence does not improve embryonic yield in superovulated ewes. Anim Reprod 2021; 18:e20210084. [PMID: 35035542 PMCID: PMC8747934 DOI: 10.1590/1984-3143-ar2021-0084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 12/03/2021] [Indexed: 11/30/2022] Open
Abstract
The present study aimed to investigate the effects of a combination of progesterone with different doses of E-17β on following end points: (1) ovarian follicular dynamics and emergence of a new follicular wave, and (2) superovulatory response and embryo yield. In Experiment 1, 28 ewes were randomly divided into four groups (n = 7) to receive either 2.0 mg, 1.0 mg, 0.5 mg or none E-17β one day after insertion of a progesterone device. The different doses of estradiol similarly delayed the moment of follicular emergence (overall mean = 3.1 ± 1.0 days vs. control group = 0.86 ± 1.0 days; P < 0.01), but the emergence of the new wave showed greater synchronization with the 0.5 mg dosage of E-17β. In Experiment 2, sixty-two donor ewes received an internal progesterone release device (day -1) for 7 d and 1 d after the insertion of this device (day 0) were allocated randomly to receive 0.5 mg of E-17β or only the vehicle (control group). Superstimulation was initiated on day 3 with the administration of 133 mg of pFSH in eight decreasing doses. Contrary to expectations, the protocol with the administration of 0.5 mg E-17β did not improve the percentage of donors with > 2 CL, the number of CL and the production of embryos (P > 0.05). It was concluded that the combination of progesterone and 0.5 mg E-17β was more efficient in synchronizing the emergence of the new follicular wave, however this approach seems to be unnecessary in ewe’s superovulation programs.
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Magalhães LC, Lopes Júnior ES, Leite Guimarães ADS, Miranda MDS, Souza TTDS, do Monte APO, Silva AADA, Sampaio LS, Nascimento TVC, Felix de Sousa PH, l Maia Nogueira D, Cordeiro MF. Comparison between Day 0 and traditional protocols for estrus synchronization and multiple ovulation in crossbred hair sheep. JOURNAL OF APPLIED ANIMAL RESEARCH 2019. [DOI: 10.1080/09712119.2019.1687307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Livia Correia Magalhães
- Laboratory of Physiology and Reproduction Control, State University of Ceará, Fortaleza, Brasil
| | - Edilson Soares Lopes Júnior
- Laboratory of Physiology and Biotechnology of Animal Reproduction, Federal University of São Francisco Valley, Petrolina, Brazil
| | - Aionne de Souza Leite Guimarães
- Laboratory of Physiology and Biotechnology of Animal Reproduction, Federal University of São Francisco Valley, Petrolina, Brazil
| | | | - Thais Thatiane dos Santos Souza
- Laboratory of Physiology and Biotechnology of Animal Reproduction, Federal University of São Francisco Valley, Petrolina, Brazil
| | - Alane Pains Oliveira do Monte
- Laboratory of Physiology and Biotechnology of Animal Reproduction, Federal University of São Francisco Valley, Petrolina, Brazil
| | - Ana Arlete de Amorim Silva
- Laboratory of Physiology and Biotechnology of Animal Reproduction, Federal University of São Francisco Valley, Petrolina, Brazil
| | - Ludmila Souza Sampaio
- Laboratory of Physiology and Biotechnology of Animal Reproduction, Federal University of São Francisco Valley, Petrolina, Brazil
| | | | - Pedro Humberto Felix de Sousa
- Faculty of Agricultural Engineering, Department of Technology and Social Sciences, State University of Bahia, Juazeiro, Brazil
| | - Danie l Maia Nogueira
- Animal Production and Reproduction Sector, Brazilian Agricultural Research Corporation, Embrapa Tropical Semiarid, Petrolina, Brazil
| | - Mabel Freitas Cordeiro
- Laboratory of Physiology and Biotechnology of Animal Reproduction, Federal University of São Francisco Valley, Petrolina, Brazil
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Garcia Kako Rodriguez M, Serpa Maciel G, Ramirez Uscategui RA, Correia Santos VJ, Perecin Nociti R, Del Aguila da Silva P, Rossi Feliciano MA, Zandonadi Brandão F, Ferreira Fonseca J, Franco Oliveira ME. Early luteal development in Santa Inês ewes superovulated with reduced doses of porcine follicle‐stimulating hormone. Reprod Domest Anim 2018; 54:456-463. [DOI: 10.1111/rda.13374] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 11/04/2018] [Indexed: 01/05/2023]
Affiliation(s)
| | - Giovanna Serpa Maciel
- Faculdade de Ciências Agrárias e Veterinárias UNESP—Universidade Estadual Paulista Jaboticabal Brazil
| | | | | | - Ricardo Perecin Nociti
- Faculdade de Ciências Agrárias e Veterinárias UNESP—Universidade Estadual Paulista Jaboticabal Brazil
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