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Dután J, Samaniego J, Perea F, Hernández-Fonseca H, Pesántez JL, Jácome A, Garay G, Ayala L. Relación de la hormona anti-mülleriana con la cantidad y calidad de ovocitos colectados por aspiración ecoguiada en vaquillas Holstein. REVISTA CIENTÍFICA DE LA FACULTAD DE CIENCIAS VETERINARIAS 2023. [DOI: 10.52973/rcfcv-e33202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
El experimento tuvo dos fases, la primera determinó la relación entre el recuento de folículos antrales (RFA) y la concentración de la hormona anti-mülleriana (AMH) valorada el día de reinicio de la onda folicular en 61 vaquillas Holstein mestizas, criadas en ganaderías del trópico alto del Ecuador. La segunda fase comparó el RFA valorado el día de la aspiración ecoguiada (OPU); así como, la cantidad y calidad de los complejos cumulus ovocito (COCs) recuperados en animales con alta (n=8) y baja (n=8) concentración de AMH. La sincronización de la onda folicular en la primera fase se realizó con benzoato de estradiol más un implante de progesterona intravaginal (DIV) y prostaglandina (PG). El RFA y la toma de las muestras de sangre en la primera fase del experimento se realizó el día 11 del protocolo. Se establecieron valores de corte de AMH mayores a 0,12 ng·mL-1 para el grupo de alta y de 0,05 ng·mL-1 para el grupo de baja concentración de AMH. La concentración de AMH el día 0 (inicio de la onda folicular) fue de 0,13 ± 0,01 ng·mL-1, con un RFA de 17,31 ± 0,69 folículos y una correlación alta y positiva entre la AMH y el RFA de r=0,93; P<0,001. En la segunda fase del experimento se observó que las vaquillas con alta concentración de AMH presentaron el doble de folículos y COCs comparadas con las de baja concentración; sin embargo, el porcentaje de recuperación fue similar (57 %) en los dos grupos. Se ratificó la existencia de una correlación alta y positiva entre el RFA y la concentración de la AMH; además, se observó una relación fuerte entre la AMH y la cantidad y calidad de COCs recuperados por OPU. Vaquillas con más de 12 ng·mL-1 deberían ser seleccionadas como donadoras de ovocitos, pues proporcionaron el doble de COCs aptos para la producción de embriones in vitro (PIVE), lo cual influirá en la cantidad y calidad de embriones obtenidos al final de la PIVE.
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Affiliation(s)
- Jorge Dután
- Universidad de Cuenca, Facultad de Ciencias Agropecuarias. Cuenca, Ecuador - Universidad del Zulia, Facultad de Ciencias Veterinarias, Doctorado en Ciencias Veterinarias. Maracaibo, Venezuela
| | - Jorge Samaniego
- Universidad de Cuenca, Facultad de Ciencias Agropecuarias. Cuenca, Ecuador
| | - Fernando Perea
- Universidad de Los Andes, Departamento de Ciencias Agrarias. Trujillo, Venezuela
| | - Hugo Hernández-Fonseca
- St. George's University, School of Veterinary Medicine, Anatomy, Physiology and Pharmacology Departament. St. George's, Granada
| | - José Luis Pesántez
- Universidad de Cuenca, Facultad de Ciencias Agropecuarias. Cuenca, Ecuador
| | - Andrés Jácome
- Universidad de Cuenca, Facultad de Ciencias Agropecuarias. Cuenca, Ecuador
| | - Gabriela Garay
- Universidad de Cuenca, Facultad de Ciencias Agropecuarias. Cuenca, Ecuador
| | - Luis Ayala
- Universidad de Cuenca, Facultad de Ciencias Agropecuarias. Cuenca, Ecuador
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Ayala Guanga L, Astiz S, Dutan Sanango J, Samaniego JX, López Cabrera RX, Perea F, Hernandez-Fonseca HJ, Pesántez Pacheco JL. Relationship between the concentration of anti-Müllerian hormone and antral follicle count in pasture-managed Holstein cows in the high tropics. J DAIRY RES 2022; 89:1-5. [PMID: 35189985 DOI: 10.1017/s0022029922000140] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
We evaluated the relationship between plasma levels of anti-Müllerian hormone (AMH) and the number of antral follicles at the restart of the follicular wave in crossbred Holstein cows reared under extensive grazing systems over 2500 m above sea level. The study included 140 cows from 15 farms that were in average at the 75.3 ± 2.10 d post partum. Animals were synchronized according to the following regime: day 0 = intravaginal progesterone releasing device (IPD) + estradiol benzoate (EB); day 7: withdrawal of IPD + prostaglandin; and day 8: EB, for restart of the follicular wave on day 11. On this day 11, antral follicle counts (AFCs) were made by transrectal ultrasound, and a plasma sample was taken for the determination of AMH. The mean AMH plasma level was 0.06 ± 0.03 ng/ml and the mean AFC was 17.26 ± 0.38 follicles. A strong positive linear correlation was found between these two variables (r = 0.783, r = 0.613, P < 0.0001). Cows were categorized according to AMH concentration as high (>0.09 ng/ml), intermediate (0.09-0.05 ng/ml) or low (<0.05 ng/ml). Cows with high AMH presented a higher AFC (25.0 ± 2.21 follicles) than those with low AMH (14.08 ± 2.68 follicles; P < 0.001. Our results suggest that the cut-off value of AMH = 0.09 ng/ml may be useful for selecting donors in multiple ovulation embryo transfer programs involving cows with these characteristics. Our data further suggest that AMH plasma concentration correlates with AFC and can be used as an endocrine biomarker of the number of antral follicles present at a given moment of the estrous cycle in crossbred Holstein cows raised at altitudes above 2500 m.
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Affiliation(s)
- Luis Ayala Guanga
- Faculty of Agricultural Sciences, School of Veterinary Medicine and Zootechnics, University of Cuenca, Avda. 12 de octubre y Diego de Tapia, 010220Cuenca, Ecuador
| | - Susana Astiz
- Animal Reproduction Department (INIA-CSIC), INIA, Avda. Puerta de Hierro s/n, 28040Madrid, Spain
| | - Jorge Dutan Sanango
- Faculty of Agricultural Sciences, School of Veterinary Medicine and Zootechnics, University of Cuenca, Avda. 12 de octubre y Diego de Tapia, 010220Cuenca, Ecuador
| | - Jorge Xavier Samaniego
- Faculty of Agricultural Sciences, School of Veterinary Medicine and Zootechnics, University of Cuenca, Avda. 12 de octubre y Diego de Tapia, 010220Cuenca, Ecuador
| | - Rodrigo Xavier López Cabrera
- Program in Agricultural Biotechnology, Universidad Técnica Particular de Loja, San Cayetano Alto s/n, 110150Loja, Ecuador
| | - Fernando Perea
- Department of Agricultural Sciences, Universidad de Los Andes, 3101Trujillo, Venezuela
| | - Hugo J Hernandez-Fonseca
- Faculty of Veterinary Sciences, Universidad del Zulia, Avda. 16 Guajira, 4005Maracaibo, Venezuela
| | - José Luis Pesántez Pacheco
- Faculty of Agricultural Sciences, School of Veterinary Medicine and Zootechnics, University of Cuenca, Avda. 12 de octubre y Diego de Tapia, 010220Cuenca, Ecuador
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Baruselli PS, Rodrigues CA, Ferreira RM, Sales JNS, Elliff FM, Silva LG, Viziack MP, Factor L, D'Occhio MJ. Impact of oocyte donor age and breed on in vitro embryo production in cattle, and relationship of dairy and beef embryo recipients on pregnancy and the subsequent performance of offspring: A review. Reprod Fertil Dev 2021; 34:36-51. [PMID: 35231233 DOI: 10.1071/rd21285] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Genomic selection combined with in vitro embryo production (IVEP) with oocytes from heifer calves provides a powerful technology platform to reduce generation interval and significantly increase the rate of genetic gain in cattle. The ability to obtain oocytes with developmental competence from calves has been recognised for more than 60years. There is renewed interest in the potential of this reproductive technology as the beef and dairy industries seek to identify and multiply animals that satisfy consumer demand for efficient utilisation of natural resources, with minimal environmental impact and high product quality. Heifer calves show a good follicular response to FSH stimulation and oocytes can be recovered by ovum pick-up (OPU). However, the efficiency of OPU/IVEP remains lower for calves compared with peripubertal heifers and cows, in both indicus (Zebu, Bos indicus ) and taurus (Bos taurus ) breeds. Indicus cattle generally have more follicles, yield a greater number of oocytes, and have a better IVEP outcome, compared with taurus cattle. The treatment of prepubertal heifers with bovine somatotrophin (bST) and propylene glycol before OPU/IVEP has yet to show a major improvement in embryo production. Holstein (taurus) dairy heifers derived from different reproductive technologies (AI, MOET, OPU/IVEP) showed a similar age at puberty and first-lactation milk production. OPU/IVEP Holstein embryos transferred to beef or dairy cows likewise yielded heifers with the same performance. The gains in productivity that can be achieved with strategic use of OPU/IVEP in heifer calves make this a relevant and highly important reproductive technology in cattle breeding. Ongoing optimisation of the technology is needed for the potential of OPU/IVEP in young donors to be fully realised.
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Affiliation(s)
- Pietro S Baruselli
- Department of Animal Reproduction, Faculty of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, SP 05508-270, Brazil
| | | | - Roberta M Ferreira
- Department of Animal Reproduction, Faculty of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, SP 05508-270, Brazil
| | | | - Flávia M Elliff
- Department of Animal Reproduction, Faculty of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, SP 05508-270, Brazil
| | - Laísa G Silva
- Department of Animal Reproduction, Faculty of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, SP 05508-270, Brazil
| | - Mariana P Viziack
- Department of Animal Reproduction, Faculty of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, SP 05508-270, Brazil
| | - Luana Factor
- Department of Animal Reproduction, Faculty of Veterinary Medicine and Animal Science, University of Sao Paulo, Sao Paulo, SP 05508-270, Brazil
| | - Michael J D'Occhio
- School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Sydney, NSW 2006, Australia
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Torres-Simental JF, Peña-Calderón C, Avendaño-Reyes L, Correa-Calderón A, Macías-Cruz U, Rodríguez-Borbón A, Leyva-Corona JC, Rivera-Acuña F, Thomas MG, Luna-Nevárez P. Predictive markers for superovulation response and embryo production in beef cattle managed in northwest Mexico are influenced by climate. Livest Sci 2021. [DOI: 10.1016/j.livsci.2021.104590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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D Occhio MJ, Campanile G, Baruselli PS. Transforming growth factor-β superfamily and interferon-τ in ovarian function and embryo development in female cattle: review of biology and application. Reprod Fertil Dev 2021; 32:539-552. [PMID: 32024582 DOI: 10.1071/rd19123] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 09/16/2019] [Indexed: 12/21/2022] Open
Abstract
Survival of the embryo and establishment of a pregnancy is a critical period in the reproductive function of female cattle. This review examines how the transforming growth factor-β (TGFB) superfamily (i.e. bone morphogenetic protein (BMP) 15, growth differentiation factor (GDF) 9, anti-Müllerian hormone (AMH)) and interferon-τ (IFNT) affect ovarian function and embryo development. The oocyte in a primary follicle secretes BMP15 and GDF9, which, together, organise the surrounding granulosa and theca cells into the oocyte-cumulus-follicle complex. At the same time, the granulosa secretes AMH, which affects the oocyte. This autocrine-paracrine dialogue between the oocyte and somatic cells continues throughout follicle development and is fundamental in establishing the fertilisation potential and embryo developmental competency of oocytes. The early bovine embryo secretes IFNT, which acts at the uterine endometrium, corpus luteum and blood leucocytes. IFNT is involved in the maternal recognition of pregnancy and immunomodulation to prevent rejection of the embryo, and supports progesterone secretion. Manipulation of BMP15, GDF9, AMH and IFNT in both invivo and invitro studies has confirmed their importance in reproductive function in female cattle. This review makes the case that a deeper understanding of the biology of BMP15, GDF9, AMH and IFNT will lead to new strategies to increase embryo survival and improve fertility in cattle. The enhancement of oocyte quality, early embryo development and implantation is considered necessary for the next step change in the efficiency of natural and assisted reproduction in cattle.
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Affiliation(s)
- Michael J D Occhio
- School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, 410 Werombi Road, Camden, NSW 2006, Australia
| | - Giuseppe Campanile
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, V. F. Delpino, 1 80137 Naples, Italy
| | - Pietro S Baruselli
- Department of Animal Reproduction, Faculty of Veterinary Medicine and Zootecnia, University of Sao Paulo, Sao Paulo, CEP 05508-270 Brazil; and Corresponding author.
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6
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Baruselli PS, Carvalho JGSD, Elliff FM, Silva JCBD, Chello D, Carvalho NATD. Embryo transfer in buffalo (Bubalus bubalis). Theriogenology 2020; 150:221-228. [PMID: 31996292 DOI: 10.1016/j.theriogenology.2020.01.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 01/18/2020] [Indexed: 02/06/2023]
Abstract
The use of assisted reproductive technologies, such as superovulation and in vivo embryo production and in vitro embryo production (IVEP), has increased rapidly in recent years and is now applied worldwide for genetic improvement in beef and dairy buffaloes. Although in vivo embryo production has been shown to be feasible in buffalo, low efficiency and limited commercial application has been documented. These results could be associated with low antral follicle populations, high levels of follicular atresia and/or failures of the oocyte to enter the oviduct after superovulation. Additionally, IVEP technology has been shown to be an important tool for multiplying genetic material from donors of superior merit, and promising results have been achieved with the use of ovum pick-up (OPU) along with IVEP in buffalo. However, several factors appear to be critical for successful OPU/IVEP, including circulating levels of anti-Müllerian hormone, antral follicle populations, sizes of the follicles available for the OPU, reproductive seasonality, semen (sire) used for IVEP, donor category and farm. Furthermore, technologies applied to control follicular wave emergence and ovulation at predetermined times, without the need for estrus detection in recipients, has facilitated management and improved the efficiency of embryo transfer programs in buffalo herds. Conclusively, with the considerable evidence of poor results with in vivo embryo production in buffaloes, the association of OPU with IVEP represents a new alternative for the exploitation of buffalo genetics.
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Affiliation(s)
| | - Júlia Gleyci Soares de Carvalho
- Universidade Federal de São Paulo, Escola Paulista de Medicina, Centro de Pesquisa em Urologia, São Paulo, São Paulo, Brazil
| | - Flávia Morag Elliff
- Departamento de Reprodução Animal, Universidade de São Paulo, São Paulo, São Paulo, Brazil
| | | | - Damiana Chello
- Departamento de Reprodução Animal, Universidade de São Paulo, São Paulo, São Paulo, Brazil
| | - Nelcio Antonio Tonizza de Carvalho
- Unidade de Pesquisa e Desenvolvimento de Registro/Centro de Pesquisa de Zootecnia Diversificada/Instituto de Zootecnia, Registro, São Paulo, Brazil
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Cardoso CJT, de Oliveira JS, Kischel H, da Silva WAL, Arruda EDDS, Souza-Cáceres MB, de Oliveira FAM, Nogueira É, Nogueira GDP, Melo-Sterza FDA. Anti-Müllerian hormone (AMH) as a predictor of antral follicle population in heifers. Anim Reprod 2018; 15:12-16. [PMID: 33365089 PMCID: PMC7746218 DOI: 10.21451/1984-3143-2017-ar887] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Antral follicular population (AFP) and anti-Müllerian hormone (AMH) concentration
are strongly associated. Thus, analyzing AMH concentration is a reliable method to predict
animals with high AFP, an important feature to select donor cows for embryos and oocytes. However,
not much is known about this parameter in heifers, particularly in crossbred animals. The
aim of this study was to assess AFP in heifers and cows and its relation to serum AMH levels.
Bos taurus indicus cows (36–60-months-old; n = 30) and heifers (12–14-months-old;
n = 17) of the same breed were evaluated. A single procedure of follicular counting was performed
by ultrasound for each animal. Random sampling was performed to analyze serum AMH concentration.
Cows showed higher AFP than heifers; nonetheless, plasma AMH concentration did not differ
between the categories. A high correlation of AFP with plasma AMH concentration was observed
in Girolando heifers. Thus, it is suggested that AMH concentration could be a reliable and
less invasive method for selecting heifers with high AFP.
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Affiliation(s)
| | | | - Henrique Kischel
- Laboratory of Animal Reproduction Biotechnologies, State University of Mato Grosso do Sul, Aquidauana, MS,
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Jaton C, Schenkel F, Sargolzaei M, Cánova A, Malchiodi F, Price C, Baes C, Miglior F. Genome-wide association study and in silico functional analysis of the number of embryos produced by Holstein donors. J Dairy Sci 2018; 101:7248-7257. [DOI: 10.3168/jds.2017-13848] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Accepted: 04/05/2018] [Indexed: 11/19/2022]
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9
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Pinto PHN, Balaro MFA, Souza-Fabjan JMG, Ribeiro LDS, Bragança GM, Leite CR, Arashiro EKN, de Moraes Silva K, Da Fonseca JF, Brandão FZ. Anti-Müllerian hormone and antral follicle count are more effective for selecting ewes with good potential for in vivo embryo production than the presence of FecG E mutation or eCG pre-selection tests. Theriogenology 2018. [PMID: 29524809 DOI: 10.1016/j.theriogenology.2018.02.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This study aims to compare four different methods for selecting high responding sheep donors for in vivo embryo production. These methods include a pre-selection eCG test (eCG), antral follicle count (AFC), plasma anti-Müllerian hormone measurement (AMH) and genotyping for the presence of the FecGE mutation (a polymorphism in the GDF9 gene associated with increased ovulation rate). Santa Ines ewe lambs (n = 25) underwent superovulation (SOV) with 800 IU equine chorionic gonadotropin (eCG) and the corpus luteum (CL) count was recorded by laparoscopy after eight days. At the D0eCG, blood samples for AMH and genotyping analysis were collected. Twenty-one days after the end of the eCG test, the same animals underwent SOV with 200 mg of FSH, administered in six decreasing doses, and then naturally mated. Immediately before the beginning of the FSH protocol (D0FSH), and at the moment of the first FSH dose (D9FSH), the AFC was assessed. Plasma AMH was again determined at the D9FSH. After each screening process, animals were classified as having a high (HR), or low (LR), potential of response (using specific thresholds for each method). Then, the ewes' response to SOV and embryo yield for each screening method, classified as HR or LR, were compared. Animals classified as HR by AFC (HRAFC) and by AMH concentration (HRAMH) at the D9FSH, produced more viable embryos than those classified as LRAFC and LRAMH (HRAFC 6.2 ± 3.2 vs LRAFC 2.8 ± 3.0 and HRAMH 6.6 ± 3.6 vs LRAMH 3.0 ± 2.9). Pre-selection tests with eCG and different FecGE genotypes, either heterozygous (+/E) or wild type (+/+), were unable to discriminate HR or LR animals. A tendency (P = 0.06) to have lower plasma AMH was observed in heterozygous FecGE (+/E) ewes. In conclusion, both AFC and plasma AMH can be used to select donor ewes with a higher potential of response for in vivo embryo production.
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Affiliation(s)
- Pedro Henrique Nicolau Pinto
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, CEP 24230-340, Niterói, RJ, Brazil.
| | - Mario Felipe Alvarez Balaro
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, CEP 24230-340, Niterói, RJ, Brazil
| | | | - Lilian Dos Santos Ribeiro
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, CEP 24230-340, Niterói, RJ, Brazil
| | - Gláucia Mota Bragança
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, CEP 24230-340, Niterói, RJ, Brazil
| | - Ceci Ribeiro Leite
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, CEP 24230-340, Niterói, RJ, Brazil
| | - Eduardo Kenji Nunes Arashiro
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, CEP 24230-340, Niterói, RJ, Brazil
| | | | - Jeferson Ferreira Da Fonseca
- Embrapa Caprinos e Ovinos, Núcleo Regional Sudeste, Rodovia MG 133 Km 42, CEP 36155-000, Coronel Pacheco, MG, Brazil
| | - Felipe Zandonadi Brandão
- Faculdade de Veterinária, Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, CEP 24230-340, Niterói, RJ, Brazil
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Soquila SS, Mingala CN. Anti-Müllerian hormone as a marker of embryo production in ruminants. ROCZNIKI NAUKOWE POLSKIEGO TOWARZYSTWA ZOOTECHNICZNEGO 2017. [DOI: 10.5604/01.3001.0013.5198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
This review describes the role of anti-Müllerian hormone (AMH) in embryo production for assisted
reproductive technologies in ruminants. AMH is a marker of healthy follicles and oocytes, a reliable
marker of gonadotropin-responsive follicles, and an indicator of longevity and productivity in dairy
animals. The best times to measure AMH levels in order to select cows for embryo production is
during oestrus and the period after the 12th day of the oestrous cycle. This allows animals with AMH
concentrations below 87 pg/mL at oestrus or less than 74 pg/mL for multiple ovulation embryo transfer
to be eliminated. Good oocyte donors, which have higher antral follicle counts, can be identified based
on their higher AMH levels. In sheep and goats, the blood AMH level can serve as a marker of the
animal’s potential to produce high or low numbers of high-quality embryos. A plasma AMH level of
97 pg/mL in sheep has been shown to be the optimum cut-off point to predict fertility and can be useful
in selecting replacement ewes.
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Affiliation(s)
- Salvador S. Soquila
- College of Agriculture and Veterinary Medicine, Ramon Magsaysay Technological University, Central Luzon State University, College of Agriculture Department of Animal Science
| | - Claro N. Mingala
- Central Luzon State University College of Agriculture Department of Animal Science
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11
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Sharifiyazdi H, Mirzaei A, Ghanaatian Z. Characterization of polymorphism in the FSH receptor gene and its impact on some reproductive indices in dairy cows. Anim Reprod Sci 2017; 188:45-50. [PMID: 29146098 DOI: 10.1016/j.anireprosci.2017.11.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Revised: 10/23/2017] [Accepted: 11/03/2017] [Indexed: 10/18/2022]
Abstract
Follicle stimulating hormone (FSH) is released from the anterior pituitary gland and has an important role in female fertility. As FSH is a glycoprotein polypeptide hormone which cannot pass through the cell membrane, its influence on target cells must be mediated by the FSH receptor (FSHR). Accordingly, any kind of mutation in FSHR can affect reproduction in dairy cows. In this study, the polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) technique was used for recognition of a point mutation (A/G: position -278) located in the FSHR gene in Iranian dairy cows. The association was evaluated of this mutation with reproductive performance. Blood samples were collected from 79 cows in a dairy farm in Iran and genotyped based on this single nucleotide polymorphism (SNP). The 5'-flanking regions of FSHR gene were successfully amplified and produced a fragment of 211bp in all cases. Three different patterns were, however, produced following restriction digestion with FaqI enzyme. The molecular results showed the existence of three different genotypes of AA, AG and GG among examined cows. In this study percentages of genotypes were 51.9%, 43.2% and 4.9% for AA, AG and GG genotypes, respectively. Allele frequencies were 73.5% and 26.5% for A and G, respectively. Results indicate that cows lacking allele G had desirable fertility in which a greater percentage (53.7%) of cows lacking Allele G (AA) had services per conception (SPC) of <2 in the previous lactation; while a lesser percentage of cows with Allele G (28.9%) had SPC of <2 (P<0.05). There was no difference in the days non-pregnant (DNP) and calving to first service interval among cows with these genotypes (P>0.05). Calving to first service interval was 69.9 ±12.3 in cows with Allele G and 74.73±13.9 in cows without Allele G (P>0.05). Percentage of cows with repeat breeder syndrome (SPC >3) was also 15.6% and 27.6% in cows without Allele G and with Allele G, respectively, but these values were not different (P>0.05). It can be concluded that the A to G mutation within the upstream region of FSHR gene (position -278) may affect some reproductive variables in Holstein dairy cows.
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Affiliation(s)
- Hassan Sharifiyazdi
- Department of Clinical Studies, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
| | - Abdolah Mirzaei
- Department of Clinical Studies, School of Veterinary Medicine, Shiraz University, Shiraz, Iran.
| | - Zahra Ghanaatian
- Department of Clinical Studies, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
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12
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Cory AT, Price CA, Lefebvre R, Palin MF. Identification of single nucleotide polymorphisms in the bovine follicle-stimulating hormone receptor and effects of genotypes on superovulatory response traits. Anim Genet 2012; 44:197-201. [DOI: 10.1111/j.1365-2052.2012.02380.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/15/2012] [Indexed: 12/01/2022]
Affiliation(s)
- Aron T. Cory
- Centre de Recherche en Reproduction Animale, Faculté de Médecine Vétérinaire; Université de Montréal; St-Hyacinthe QC Canada
| | - Christopher A. Price
- Centre de Recherche en Reproduction Animale, Faculté de Médecine Vétérinaire; Université de Montréal; St-Hyacinthe QC Canada
| | - Rejean Lefebvre
- Centre de Recherche en Reproduction Animale, Faculté de Médecine Vétérinaire; Université de Montréal; St-Hyacinthe QC Canada
- Department of Clinical science, Faculté de Médecine Vétérinaire; Université de Montréal; St-Hyacinthe QC Canada
| | - Marie-France Palin
- Dairy and Swine Research and Development Centre; Agriculture and Agri-Food Canada; Sherbrooke QC Canada
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