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Gonçalves JD, Dias JH, Machado-Neves M, Vergani GB, Ahmadi B, Pereira Batista RIT, Souza-Fabjan JMG, Oliveira MEF, Bartlewski PM, da Fonseca JF. Transcervical uterine flushing and embryo transfer in sheep: Morphophysiological basis for approaches currently used, major challenges, potential improvements, and new directions (alas, including some old ideas). Reprod Biol 2024; 24:100920. [PMID: 38970979 DOI: 10.1016/j.repbio.2024.100920] [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: 04/09/2024] [Revised: 05/31/2024] [Accepted: 06/20/2024] [Indexed: 07/08/2024]
Abstract
At present, the success of non-surgical embryo recovery (NSER) and transfer (NSET) hinges upon the cervical passage of catheters, but penetration of the uterine cervix in ewes is problematic due to its anatomical structure (i.e., long and narrow cervical lumen with misaligned folds and rings). It is a major obstacle limiting the widespread application of NSER and NSET in sheep. While initial attempts to traverse the uterine cervix focused on adapting or re-designing insemination catheters, more recent studies demonstrated that cervical relaxation protocols were instrumental for transcervical penetration in the ewe. An application of such protocols more than tripled cervical penetration rates (currently at 90-95 %) in sheep of different breeds (e.g., Dorper, Lacaune, Santa Inês, crossbred, and indigenous Brazilian breeds) and ages/parity. There is now sufficient evidence to suggest that even repeatedly performed cervical passages do not adversely affect overall health and reproductive function of ewes. Despite these improvements, appropriate selection of donors and recipients remains one of the most important requirements for maintaining high success rates of NSER and NSET, respectively. Non-surgical ovine embryo recovery has gradually become a commercially viable method as even though the procedure still cannot be performed by untrained individuals, it is inexpensive, yields satisfactory results, and complies with current public expectations of animal welfare standards. This article reviews critical morphophysiological aspects of transcervical embryo flushing and transfer, and the prospect of both techniques to replace surgical methods for multiple ovulation and embryo transfer (MOET) programs in sheep. We have also discussed some potential pharmacological and technical developments in the field of non-invasive embryo recovery and deposition.
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Affiliation(s)
- Joedson Dantas Gonçalves
- Department of Pathology, Reproduction and One Health, School of Agricultural and Veterinarian Sciences, São Paulo State University, Via de acesso Prof. Paulo Donato Castellane, s/n, CEP 14884-900 Jaboticabal, SP, Brazil
| | - Jenniffer Hauschildt Dias
- Department of Veterinary Medicine, Federal University of Viçosa, Av. Peter Henry Rolfs, s/n, CEP 36570-000 Viçosa, MG, Brazil
| | - Mariana Machado-Neves
- Department of Veterinary Medicine, Federal University of Viçosa, Av. Peter Henry Rolfs, s/n, CEP 36570-000 Viçosa, MG, Brazil
| | - Gabriel Brun Vergani
- Department of Pathology, Reproduction and One Health, School of Agricultural and Veterinarian Sciences, São Paulo State University, Via de acesso Prof. Paulo Donato Castellane, s/n, CEP 14884-900 Jaboticabal, SP, Brazil
| | - Bahareh Ahmadi
- Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | | | | | - Maria Emilia Franco Oliveira
- Department of Pathology, Reproduction and One Health, School of Agricultural and Veterinarian Sciences, São Paulo State University, Via de acesso Prof. Paulo Donato Castellane, s/n, CEP 14884-900 Jaboticabal, SP, Brazil
| | - Pawel Mieczyslaw Bartlewski
- Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, Guelph, Ontario N1G 2W1, Canada
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Souza-Fabjan JMG, Oliveira MEF, Guimarães MPP, Brandão FZ, Bartlewski PM, Fonseca JF. Review: Non-surgical artificial insemination and embryo recovery as safe tools for genetic preservation in small ruminants. Animal 2023; 17 Suppl 1:100787. [PMID: 37567658 DOI: 10.1016/j.animal.2023.100787] [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: 10/03/2022] [Revised: 03/17/2023] [Accepted: 03/20/2023] [Indexed: 08/13/2023] Open
Abstract
Artificial insemination (AI) and in vivo embryo production (or multiple ovulation and embryo transfer, MOET) programs are both instrumental in accelerating the propagation of genetically and economically superior goats and sheep. The aim of this review was to present the current gestalt of non-surgical AI and embryo recovery (NSER) procedures in small ruminants. Small body size, precluding rectal palpation, and highly limited penetrability of the uterine cervix in ewes are the major reasons for the scarce use of non-surgical assisted reproduction techniques in this species. As a result, AI and embryo recovery techniques in sheep mainly involve laparoscopy or laparotomy (LAP). In does, however, the Embrapa method of AI allows for successful intrauterine deposition of semen, resulting in pregnancy rates from 50 to 80% under field conditions (>3 000 goats inseminated) when frozen-thawed semen is used. After the administration of prostaglandin F2α (PGF2α), non-surgical (transcervical) embryo recovery is also feasible in goats, with the cervical penetration rate approaching 100%. There is a paucity of information on the efficacy of non-surgical AI using frozen semen in sheep, but the results are satisfactory with fresh, cooled, or chilled ram semen. An application of the NSER technique in ewes has greatly improved over the last decade, and cervical penetration rates of ∼90% can be achieved when a hormonal cervical dilation protocol using PGF2α, oxytocin, and/or estradiol ester (e.g., estradiol benzoate) is applied. In some genotypes of sheep, sufficient cervical dilation can be induced without estradiol ester included in the protocol. Several studies indicated that recovery of transferable quality ovine embryos using NSER is comparable to that employing a ventral midline laparotomy, and NSER is evidently a method of choice when animal welfare is concerned. Considering both the number of retrievable embryos and animal well-being, the NSER is a viable alternative for surgical procedures. With further developments, it has the makings of a primary, if not exclusive, embryo recovery technique in small ruminants worldwide.
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Affiliation(s)
- J M G Souza-Fabjan
- Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, Cep 24230-340, Niterói, RJ, Brazil.
| | - M E F Oliveira
- Departamento de Patologia, Reprodução e Saúde Única, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista, Via de Acesso Prof. Paulo Donato Castellane, s/n, Cep 14884-900 Jaboticabal, SP, Brazil
| | - M P P Guimarães
- Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, Cep 24230-340, Niterói, RJ, Brazil
| | - F Z Brandão
- Universidade Federal Fluminense, Rua Vital Brazil Filho, 64, Cep 24230-340, Niterói, RJ, Brazil
| | - P M Bartlewski
- Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, 50 Stone Road, Guelph, ON N1G 2W1, Canada
| | - J F Fonseca
- Embrapa Caprinos e Ovinos, Rodovia MG 133, Km 42, Cep 36155000, Coronel Pacheco, MG, Brazil
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3
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Kandemir Ç. Effect of oxytocin added into sperm on artificial insemination in sheep. Arch Anim Breed 2023. [DOI: 10.5194/aab-66-61-2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023] Open
Abstract
Abstract. The use of additional oxytocin hormones in reproductive methods began in the
1970s in Europe. In recent studies, attempts have been made to achieve more
successful pregnancies by adding oxytocin to semen rather than administering
oxytocin exogenously to females. In light of this information, this study
aimed to understand the effects of adding low-dose oxytocin hormone into ram
semen on the pregnancy rate and reproductive efficiency of sheep. Semen was
collected from five Chios rams. The ejaculates were pooled and
Ovixcell® was used as the diluent. The estrus was synchronized
using an intravaginal sponge (Chrono-Gest®) from 122 Chios
ewes. After the sponge was left in the vagina for 12 d, a 500 IU PMSG
injection was made. In every sheep, intramuscular (IM) injections were inseminated by
the intracervical method using an insemination gun 50 h after injection.
Pregnancy results were obtained by ultrasound examination without practice.
Lambing performance was recorded at delivery; 53 out of 122 Chios ewes were
inseminated with oxytocin hormone content, and successful pregnancy was
achieved in 90.56 % of them. In the insemination of the remaining 69
sheep, oxytocin was not added, and the rate of successful pregnancy was
76.81 % (p=0.046). The overall success rate based on the insemination
results of all the sheep was determined to be 82.77 %. In an examination
of the pregnancy rate, one of the indicators of reproductive performance,
the difference between the groups is statistically significant (p≤0.05). Higher pregnancies were obtained in insemination with semen fluid
containing oxytocin.
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Malmakov N, Ptacek M, Savvulidi FG, Stadnik L. Optimal time for laparoscopic intrauterine insemination performed on ewes detected in natural heat. Saudi J Biol Sci 2022; 29:103416. [PMID: 36060111 PMCID: PMC9434137 DOI: 10.1016/j.sjbs.2022.103416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 07/12/2022] [Accepted: 08/12/2022] [Indexed: 11/20/2022] Open
Affiliation(s)
- Nurlan Malmakov
- Department of Sheep and Goat Artificial Insemination and Sperm Cryoconservation, Scientific Research Institute of Sheep Breeding Branch, Mynbaev, Almaty Region 040622, Kazakhstan
| | - Martin Ptacek
- Department of Animal Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Kamycka 129, 165 00 Prague, Suchdol, Czech Republic
| | - Filipp Georgijevic Savvulidi
- Department of Animal Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Kamycka 129, 165 00 Prague, Suchdol, Czech Republic
- Corresponding author.
| | - Ludek Stadnik
- Department of Animal Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Kamycka 129, 165 00 Prague, Suchdol, Czech Republic
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Zhang J, Lu X, Liu Y, Wu X, Yu Y, Li X. Prolonging the time of semen deposition increases the pregnancy rates of ewes subjected to fixed time cervical insemination during the breeding season. Reprod Domest Anim 2022; 57:1280-1284. [PMID: 35780290 DOI: 10.1111/rda.14201] [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: 04/06/2022] [Accepted: 07/01/2022] [Indexed: 11/29/2022]
Abstract
The main limiting factor of artificial cervical insemination in ewes is the long and narrow fibrous cervical canal, which impedes the transport of spermatozoa and leads to lower pregnancy rates. The hypothesis that prolonging the time of semen deposition during ovine cervical insemination can increase pregnancy rates was investigated in this study. Estrus was synchronized in 150 multiparous Ujimqin ewes using a polyurethane intravaginal sponge impregnated with 45 mg of flurogestone acetate. The sponge was left in the vagina for 12 days followed by an injection of 330 IU of eCG at sponge removal. After exclusion of two ewes due to sponge loss, the remaining 148 ewes were divided into the Treatment group (n = 75) and the Control group (n = 73). Each ewe was inseminated once between 56 h to 60 h after the removal of sponges, using a new type of insemination device containing 0.25 ml of diluted semen. Semen was collected from eight Black Suffolk rams and all the ejaculates were pooled and diluted in ultra-high temperature-treated commercial skimmed milk. The time of semen deposition was prolonged to 60 s in the Treatment group, while ewes were given a traditional insemination in the Control group. Pregnancy status was determined by transabdominal ultrasound examination 45 days after insemination. Lambing performance was calculated after all the ewes had delivered. Significant differences were observed between the Treatment group and the Control group in terms of the pregnancy rate and the fecundity rate (73.3% and 93.3% vs 56.2% and 71.2%, p < 0.05 and p < 0.01, respectively). In conclusion, prolonging the time of semen deposition significantly increased pregnancy and fecundity rates in estrus-synchronized Ujimqin ewes subjected to fixed time cervical insemination.
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Affiliation(s)
- Jing Zhang
- College of Animal Science and Technology, Hebei Technology Innovation Center of Cattle and Sheep Embryo, Hebei Agricultural University, 071000, Baoding, Hebei, China
| | - Xiaoyu Lu
- College of Animal Science and Technology, Hebei Technology Innovation Center of Cattle and Sheep Embryo, Hebei Agricultural University, 071000, Baoding, Hebei, China
| | - Yiyong Liu
- Institute of Xinjiang Yili Animal Science, Yining, Xinjiang, 835000, China
| | - Xinglong Wu
- College of Animal Science and Technology, Hebei Technology Innovation Center of Cattle and Sheep Embryo, Hebei Agricultural University, 071000, Baoding, Hebei, China
| | - Yuansong Yu
- Dental Stem cell Bank and Research Center, Savaid Stomatology School of Hangzhou Medical College, 310013, Hangzhou, Zhejiang, China
| | - Xiangyun Li
- College of Animal Science and Technology, Hebei Technology Innovation Center of Cattle and Sheep Embryo, Hebei Agricultural University, 071000, Baoding, Hebei, China
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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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The Design of a New Catheter for Transcervical Artificial Insemination in Ewes. Animals (Basel) 2021; 11:ani11123348. [PMID: 34944124 PMCID: PMC8698084 DOI: 10.3390/ani11123348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 11/19/2021] [Accepted: 11/22/2021] [Indexed: 11/17/2022] Open
Abstract
In ovine species, transcervical artificial insemination (TCAI) is limited by the poor quality of frozen-thawed semen and by the convoluted cervical lumen hampering the passage of inseminating devices. The aim of the study was to test the efficiency of three newly designed catheters with bent tips of 3.5 mm, 5.0 mm or 8.0 mm in terms of reproductive performances (experiment 1) and to compare the results of TCAI with the best performing catheter of experiment 1 to those obtained in ewes submitted to surgical incision of cervical folds (SICF) prior to insemination (experiment 2). The following parameters were assessed: time to pass the cervix; depth of cervical penetration; site of deposition of semen; pregnancy (PR); and lambing rates (LR). The results of experiment 1 indicated that the 5.0 mm tip catheter resulted in deeper and faster TCAI and higher PR and LR compared to 3.5 mm and 8.0 mm tip catheters (p < 0.05). In experiment 2, TCAI with the 5.0 mm catheter did not differ from TCAI after SICF in terms of depth of semen deposition, time to pass the cervix, PR and LR (p < 0.05). In conclusion, the use of a catheter that allowed transcervical uterine deposition of semen without excessive manipulation led to satisfactory pregnancy rates.
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Shokry DM, Abd Eldaim MA, Badr MR, Khalifa HK, Orabi SH, Hassan AM, Dohreig R. Enhancement impact of Moringa oleifera leaves extract–base extender on cryopreservation and fertilization of Barki ram sperms: comparative study with vitamin E and selenium combination. ITALIAN JOURNAL OF ANIMAL SCIENCE 2021. [DOI: 10.1080/1828051x.2021.1953411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Dina M. Shokry
- Department of Artificial Insemination and Embryo Transfer, Animal Reproduction Research Institute, Agriculture Research Center, Giza, Egypt
| | - Mabrouk Attia Abd Eldaim
- Department of Biochemistry and Chemistry of Nutrition, Faculty of Veterinary Medicine, Menoufia University, Sheben Elkom, Egypt
| | - Magdy R. Badr
- Department of Artificial Insemination and Embryo Transfer, Animal Reproduction Research Institute, Agriculture Research Center, Giza, Egypt
| | - Hanem K. Khalifa
- Department of Biochemistry and Chemistry of Nutrition, Faculty of Veterinary Medicine, University of Sadat City, Sadat City, Egypt
| | - Sahar H. Orabi
- Department of Biochemistry and Chemistry of Nutrition, Faculty of Veterinary Medicine, University of Sadat City, Sadat City, Egypt
| | - Aziza M. Hassan
- Department of Biotechnology, College of Science, Taif University, Taif, Saudi Arabia
| | - Ragab Dohreig
- Department of Artificial Insemination and Embryo Transfer, Animal Reproduction Research Institute, Agriculture Research Center, Giza, Egypt
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Simões J, Abecia JA, Cannas A, Delgadillo JA, Lacasta D, Voigt K, Chemineau P. Review: Managing sheep and goats for sustainable high yield production. Animal 2021; 15 Suppl 1:100293. [PMID: 34294548 DOI: 10.1016/j.animal.2021.100293] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 01/20/2021] [Accepted: 01/22/2021] [Indexed: 10/20/2022] Open
Abstract
This review discusses the most relevant aspects of nutritional, reproductive and health management, the three pillars of flock efficiency, production and sustainability regarding the intensification of production in sheep and goats. In small ruminants, reproductive management is dependent on seasonality, which in turn depends on breed and latitude. Nutrition represents the major cost for flocks and greatly affects their health, the quality of their products and their environmental impact. High-yielding sheep and goats have very high requirements and dietary intake, requiring nutrient-dense diets and sophisticated nutritional management that should always consider the strong interrelationships among nutrition, immunity, health, reproduction, housing and farm management. The reproductive pattern is to a great extent assisted by out-of-season breeding, facilitating genetic improvement schemes, and more recently by advanced reproductive technologies. Heath management aims to control or eradicate economic and zoonotic diseases, ensuring animal health and welfare, food safety and low ecosystem and environmental impacts in relation to chemical residues and pathogen circulation. In highly producing systems, nutrition, genetic and hazard factors assume a complex interrelationship. Genomic and management improvement research and technological innovation are the keys to sustain sheep and goat production in the future.
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Affiliation(s)
- J Simões
- Departamento de Ciências Veterinárias, Universidade de Trás-os-Montes e Alto Douro, Quinta de Prados, 5000-801 Vila Real, Portugal.
| | - J A Abecia
- Departamento de Producción Animal, Instituto Universitario de Investigación en Ciencias Ambientales de Aragon (IUCA), Universidad de Zaragoza, Miguel Servet, 177, Zaragoza 50013, Spain
| | - A Cannas
- Dipartimento di Agraria, sezione di Scienze zootecniche, Università di Sassari, viale Italia 39, Sassari 07100, Italy
| | - J A Delgadillo
- Centro de Investigación en Reproducción Caprina (CIRCA), Programa de Posgrado en Ciencias Agrarias, Universidad Autónoma Agraria Antonio Narro, Periférico Raúl López Sánchez y Carretera a Santa Fe, 27054 Torreón, Coahuila, Mexico
| | - D Lacasta
- Departamento de Patología Animal, Instituto Agroalimentario de Aragón-IA2, Universidad de Zaragoza - Centro de Investigación y Tecnología Agroalimentaria de Aragón (CITA), C/Miguel Servet 177, 50013 Zaragoza, Spain
| | - K Voigt
- Clinic for Ruminants with Ambulatory and Herd Health Services, LMU Munich, Sonnenstr. 16, 85764 Oberschleissheim, Germany
| | - P Chemineau
- UMR Physiologie de la Reproduction et des Comportements, Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement (INRAE), Centre National de la Recherche Scientifique (CNRS), Institut Français du Cheval et de l'Equitation (IFCE), Université de Tours, 37380 Nouzilly, France
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Sylla L, Pistolesi A, Corsi I, Crociati M, Stradaioli G, Monaci M. Laparotomic intrauterine insemination with frozen-thawed semen in Sopravissana breed ewes in Central Italy. ITALIAN JOURNAL OF ANIMAL SCIENCE 2021. [DOI: 10.1080/1828051x.2021.1918585] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Lakamy Sylla
- Dipartimento di Medicina Veterinaria, Università degli Studi di Perugia, Perugia, Italy
| | - Alessia Pistolesi
- Dipartimento di Medicina Veterinaria, Università degli Studi di Perugia, Perugia, Italy
| | - Ivan Corsi
- Dipartimento di Medicina Veterinaria, Università degli Studi di Perugia, Perugia, Italy
| | - Martina Crociati
- Dipartimento di Medicina Veterinaria, Università degli Studi di Perugia, Perugia, Italy
| | - Giuseppe Stradaioli
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali (DI4A), University of Udine, Udine, Italy
| | - Maurizio Monaci
- Dipartimento di Medicina Veterinaria, Università degli Studi di Perugia, Perugia, Italy
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Küçük N, Uçan U, Raza S, Erdoğan G, Aksoy M. Comparative efficiency of novel laparoscopic and routine vaginal inseminations with cryopreserved semen in rabbits. Reprod Domest Anim 2021; 56:1059-1065. [PMID: 33966306 DOI: 10.1111/rda.13949] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Accepted: 05/05/2021] [Indexed: 12/14/2022]
Abstract
Laparoscopic artificial insemination technique (LAI) is described to overcome reduced fertility problems in sheep artificial insemination (AI) programmes with frozen semen. Later on, this technology was modified for endangered non-domestic cats to deposit low quality or reduced number of sperm cells hardly obtained by electro-ejaculation into the oviduct. This technique by passes the complex structure of cervix and efficiently transfers the sperm cells to the point of fertilization. In recent years, rabbits are becoming popular transgenic animal models producing various therapeutic and commercial products, as well as being experimental animals for disease models. The worldwide transportation of frozen semen and re-establishment of transgenic lines using AI technology has become a common practice. Therefore, this study was designed to describe a laparoscopic intrauterine insemination technique, which might assist in conceiving the animals with limited number of sperm cells. The female rabbits were laparoscopically (n = 22) or vaginally (n = 13) inseminated with frozen-thawed semen samples containing approximately 10 × 106 motile sperm. The laparoscopic insemination technique provided higher pregnancy rate (45.5%) than vaginal insemination technique (7.7%) (p < .05). In conclusion, the described laparoscopic AI might be a new alternative technique, thus enabling limited or low-quality frozen sperm samples to establish pregnancy in rabbits.
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Affiliation(s)
- Niyazi Küçük
- Faculty of Veterinary Medicine, Department of Reproduction and Artificial Insemination, University of Aydın Adnan Menderes, Aydın, Turkey
| | - Uğur Uçan
- Faculty of Veterinary Medicine, Department of Reproduction and Artificial Insemination, University of Aydın Adnan Menderes, Aydın, Turkey
| | - Sanan Raza
- Faculty of Veterinary Medicine, Department of Reproduction and Artificial Insemination, University of Aydın Adnan Menderes, Aydın, Turkey.,Department of Animal Reproduction, University of Veterinary & Animal Sciences, Lahore, Pakistan
| | - Güneş Erdoğan
- Faculty of Veterinary Medicine, Department of Veterinary Obstetrics and Gynecology, University of Aydın Adnan Menderes, Aydın, Turkey
| | - Melih Aksoy
- Faculty of Veterinary Medicine, Department of Reproduction and Artificial Insemination, University of Aydın Adnan Menderes, Aydın, Turkey
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Lu X, Liu Y, Zhang J, Wu X, Li X. Oxytocin increases pregnancy rates after fixed time artificial insemination in Kazak ewes. Reprod Domest Anim 2021; 56:942-947. [PMID: 33742456 DOI: 10.1111/rda.13931] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 03/17/2021] [Indexed: 01/01/2023]
Abstract
It is probable that reduced pregnancy rates in ewes after fixed time artificial insemination (FTAI) is attributable, in part, to the reduced number of normal spermatozoa that colonize the oviduct. Administration of oxytocin stimulates both cervical dilation and uterine/oviductal contractility. The hypothesis that oxytocin can enhance sperm transport into the uteri and the oviducts, and thereby increase pregnancy rates, was tested in the present study. Oestrus was synchronized in 199 multiparous Kazak ewes using intravaginal flurogestone-impregnated sponge. The sponge was left in the vagina for 12 days followed with an injection of 330 IU of eCG at sponge removal. Each ewe was intracervically inseminated twice at 50 hr and 62 hr after the removal of sponges using an insemination catheter containing 0.25 ml of diluted semen. Semen was collected from seven Texel rams and all the ejaculates were pooled and diluted in ultra-high temperature-treated commercial skimmed milk without (Control group, 0.05 ml of saline per mL milk, n = 144) or with oxytocin supplement (Oxytocin group, 0.5 U of oxytocin per ml milk, n = 55). Pregnancy status was determined by transabdominal ultrasound examination 45 days after insemination. Lambing performance was recorded at delivery. Significant differences were observed between the Oxytocin group and the Control group in terms of the pregnancy rate and the fecundity rate (85.5% and 92.7% versus 68.8% and 72.9%, respectively). In conclusion, low dose oxytocin supplementation of semen extender significantly increased pregnancy and fecundity rates in oestrus-synchronized Kazak ewes after FTAI.
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Affiliation(s)
- Xiaoyu Lu
- College of Animal Science and Technology, Hebei Technology Innovation Center of Cattle and Sheep Embryo, Hebei Agricultural University, Baoding, China
| | - Yiyong Liu
- Institute of Xinjiang Yili Animal Science, Yining, China
| | - Jing Zhang
- College of Animal Science and Technology, Hebei Technology Innovation Center of Cattle and Sheep Embryo, Hebei Agricultural University, Baoding, China
| | - Xinglong Wu
- College of Animal Science and Technology, Hebei Technology Innovation Center of Cattle and Sheep Embryo, Hebei Agricultural University, Baoding, China
| | - Xiangyun Li
- College of Animal Science and Technology, Hebei Technology Innovation Center of Cattle and Sheep Embryo, Hebei Agricultural University, Baoding, China
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Bucak MN, Akalın PP, Keskin N, Bodu M, Öztürk AE, İli P, Özkan H, Topraggaleh TR, Arslan HO, Başpınar N, Dursun Ş. Combination of fetuin and trehalose in presence of low glycerol has beneficial effects on freeze-thawed ram spermatozoa. Andrology 2021; 9:1000-1009. [PMID: 33438325 DOI: 10.1111/andr.12974] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 12/23/2020] [Accepted: 01/07/2021] [Indexed: 12/24/2022]
Abstract
BACKGROUND Freeze-thawing process negatively affects ram spermatozoa in terms of sperm quality, DNA integrity and antioxidant defence system. Thus, antioxidant supplementation of spermatozoa during freeze-thawing is suggested to improve sperm parameters. OBJECTIVES The aim of this study was to determine the effects of fetuin and trehalose added into ram semen extender on sperm parameters, antioxidant parameters, antioxidant-related gene expressions and DNA integrity during the freeze-thawing process, in low glycerol concentration. METHODS Semen samples collected from six mature rams were pooled and splitted into equal aliquots and diluted with a tris-based extender containing different concentrations of glycerol (G5; %5 and G3; %3), fetuin (F; 2.5, 5 and 15 mg/mL) and trehalose (60 mm) as eight groups (G5F0, G5F2.5, G5F5, G5F15, G3F0, G3F2.5, G3F5 and G3F15). RESULTS G3F5 group resulted in the highest motility, mitochondrial activity and viability and the lowest DNA fragmentation and DNA damage (p < 0.05). Also, G3F0 displayed considerably more cryoprotective effect compared with G5F0 group (p < 0.05) in terms of motility, mitochondrial activity and viability rates. Lipid peroxidation levels decreased in G5F5 group compared with G5F0 group (p < 0.05). The levels of total glutathione increased in G3F2.5 group (p < 0.05) in comparison with the G5F0 group. NQO1 gene levels were upregulated approximately twofold in G5F5, G5F15, G3F2.5, G3F5 and G3F15 groups compared with G5F0 group (p < 0.05). The levels of GCLC gene were approximately twofold higher in G3F0, G3F2.5, G3F5 and G3F15 groups compared with G5F0 group (p < 0.05). GSTP1 gene levels were significantly higher with different levels in all treatment groups except for G5F2.5 and G3F0 groups in comparison with G5F0 group (p < 0.05). CONCLUSIONS Co-supplementation of tris-based extender having low glycerol (3%) with trehalose and fetuin to enhance the quality of ram spermatozoa after freeze-thawing process is recommended.
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Affiliation(s)
- Mustafa Numan Bucak
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Sciences, Selcuk University, Konya, Turkey
| | - Pınar Peker Akalın
- Department of Biochemistry, Faculty of Veterinary Sciences, Hatay Mustafa Kemal University, Hatay, Turkey
| | - Nazan Keskin
- Department of Histology and Embryology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Mustafa Bodu
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Sciences, Selcuk University, Konya, Turkey
| | - Ali Erdem Öztürk
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Sciences, Erciyes University, Kayseri, Turkey
| | - Pinar İli
- Department of Medical Services and Techniques, Denizli Vocational School of Health Services, Pamukkale University, Denizli, Turkey
| | - Hüseyin Özkan
- Department of Genetics, Faculty of Veterinary Sciences, Hatay Mustafa Kemal University, Hatay, Turkey
| | - Tohid Rezaei Topraggaleh
- Department of Anatomical Sciences, Faculty of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Halil Ozancan Arslan
- Republic of Turkey Ministry of Agriculture and Foresty International Center For Livestock Reseach And Training, Ankara, Turkey
| | - Nuri Başpınar
- Department of Biochemistry, Faculty of Veterinary Sciences, Selcuk University, Konya, Turkey
| | - Şükrü Dursun
- Department of Gynecology and Obstetrics, Faculty of Veterinary Sciences, Aksaray University, Aksaray, Turkey
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Padilha-Nakaghi LC, Uscategui RAR, Oliveira MEF, Nociti RP, Macente BI, Coutinho LN, Nakaghi EYO, Motta GA, Santos VJC, Maciel GS, Mariano RSG, Barros FFPC, Primo FL, Tedesco AC, Vicente WRR. Local α1-adrenergic blockers: An alternative for sheep cervix dilation? Anim Reprod Sci 2020; 222:106609. [PMID: 33002660 DOI: 10.1016/j.anireprosci.2020.106609] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 09/21/2020] [Accepted: 09/22/2020] [Indexed: 11/29/2022]
Abstract
To facilitate transcervical artificial insemination in sheep, the effects of local treatment with α1-adrenergic receptor antagonists on cervix dilation and hemodynamics were evaluated. Ewes (n = 7) were subjected to oestrous synchronisation every 40 days and assigned to treatments in a Latin square experimental design (seven animals × seven periods) with a factorial treatment arrangement (A × B), Factors A (prazosin or tamsulosin) and B (1, 2, or 4 mg/animal). Ewes of the six treatment groups (P1, P2, P4, T1, T2, and T4) were administered α1-adrenergic receptor antagonists while those of the control group (CG) were administered only α1-adrenergic antagonist carrier agent. Distance that the transcervical catheter penetrated without cervical resistance, mean arterial pressure, and uterine artery dopplerfluxometry were evaluated before and after 30 min, 1, 2, 4, 8, and 10 h of treatment. Catheter penetration distance was greater in ewes of the T4 and P4 groups (P < 0.01), with there being a positive correlation between dose and distance (r = 0.243). The penetration distance was similar (P = 0.84) for treated groups, with the greatest penetration occurring 2, 4, and 6 h after treatment (P < 0.01). The passage into the uterine lumen was greater (P = 0.013) in ewes of the P4 (17.9 %) and T4 (19.6 %) groups. There were no effects on blood pressure or uterine blood flow (P> 0.05). These preliminary results indicate there are benefits of treatment with 4 mg/animal of tamsulosin or prazosin in catheter passage through the sheep cervix 2-6 h after administration without hemodynamic effects.
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Affiliation(s)
- Luciana C Padilha-Nakaghi
- Departamento de Medicina Veterinária Preventiva e Reprodução Animal, Faculdade de Ciências Agrárias e Veterinárias (FCAV), Universidade Estadual Paulista (UNESP), Via de Acesso Prof. Paulo Donato Castellane s/n, Cep 14884-900, Jaboticabal, SP, Brazil.
| | - Ricardo A R Uscategui
- Instituto de Ciências Agrarias, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Unaí, MG, Brazil
| | - Maria Emilia F Oliveira
- Departamento de Medicina Veterinária Preventiva e Reprodução Animal, Faculdade de Ciências Agrárias e Veterinárias (FCAV), Universidade Estadual Paulista (UNESP), Via de Acesso Prof. Paulo Donato Castellane s/n, Cep 14884-900, Jaboticabal, SP, Brazil
| | - Ricardo P Nociti
- Departamento de Medicina Veterinária-ZMV, Faculdade de Zootecnia e Engenharia de Alimentos (FZEA), Universidade de São Paulo (USP), SP, Brazil
| | - Beatrice I Macente
- Departamento de Medicina Veterinária Preventiva e Reprodução Animal, Faculdade de Ciências Agrárias e Veterinárias (FCAV), Universidade Estadual Paulista (UNESP), Via de Acesso Prof. Paulo Donato Castellane s/n, Cep 14884-900, Jaboticabal, SP, Brazil
| | - Leandro N Coutinho
- Instituto da Saúde e Produção Animal (ISPA), Universidade Federal Rural da Amazônia (UFRA), Belém, PA, Brazil
| | - Eduardo Y O Nakaghi
- Coordenadoria de Defesa Agropecuária do Estado de São Paulo (CDA/SSA-SP), Jaboticabal, SP, Brazil
| | - Guilherme A Motta
- Departamento de Medicina Veterinária Preventiva e Reprodução Animal, Faculdade de Ciências Agrárias e Veterinárias (FCAV), Universidade Estadual Paulista (UNESP), Via de Acesso Prof. Paulo Donato Castellane s/n, Cep 14884-900, Jaboticabal, SP, Brazil
| | - Victor J C Santos
- Departamento de Medicina Veterinária Preventiva e Reprodução Animal, Faculdade de Ciências Agrárias e Veterinárias (FCAV), Universidade Estadual Paulista (UNESP), Via de Acesso Prof. Paulo Donato Castellane s/n, Cep 14884-900, Jaboticabal, SP, Brazil
| | - Giovanna S Maciel
- Departamento de Medicina Veterinária Preventiva e Reprodução Animal, Faculdade de Ciências Agrárias e Veterinárias (FCAV), Universidade Estadual Paulista (UNESP), Via de Acesso Prof. Paulo Donato Castellane s/n, Cep 14884-900, Jaboticabal, SP, Brazil
| | - Renata S G Mariano
- Departamento de Medicina Veterinária Preventiva e Reprodução Animal, Faculdade de Ciências Agrárias e Veterinárias (FCAV), Universidade Estadual Paulista (UNESP), Via de Acesso Prof. Paulo Donato Castellane s/n, Cep 14884-900, Jaboticabal, SP, Brazil
| | - Felipe F P C Barros
- Departamento de Medicina e Cirurgia Veterinária, Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, Brazil
| | - Fernando L Primo
- Departamento de Engenharia de Bioprocessos e Biotecnologia, Faculdade de Ciências Farmacêuticas de Araraquara, Universidade Estadual Paulista (UNESP), Araraquara, SP, Brazil
| | - Antonio C Tedesco
- Departamento de Química, Laboratório de Fotobiologia e Fotomedicina, Centro de Nanotecnologia e Engenharia Tecidual, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de SãoPaulo (USP), Ribeirão Preto, SP, Brazil
| | - Wilter R R Vicente
- Departamento de Medicina Veterinária Preventiva e Reprodução Animal, Faculdade de Ciências Agrárias e Veterinárias (FCAV), Universidade Estadual Paulista (UNESP), Via de Acesso Prof. Paulo Donato Castellane s/n, Cep 14884-900, Jaboticabal, SP, Brazil
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15
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Bucak MN, Keskin N, Ili P, Bodu M, Akalın PP, Öztürk AE, Özkan H, Topraggaleh TR, Sari F, Başpınar N, Dursun Ş. Decreasing glycerol content by co-supplementation of trehalose and taxifolin hydrate in ram semen extender: Microscopic, oxidative stress, and gene expression analyses. Cryobiology 2020; 96:19-29. [PMID: 32890464 DOI: 10.1016/j.cryobiol.2020.09.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 08/31/2020] [Accepted: 09/01/2020] [Indexed: 01/08/2023]
Abstract
This study aimed to evaluate the comparative effects of taxifolin hydrate and trehalose on the quality of frozen-thawed ram spermatozoa for the first time. Ejaculates collected from six mature rams were pooled, and divided to eight equal aliquots to extend them with different concentrations of glycerol (%5 and %3), taxifolin hydrate (10, 100, and 500 μM), and trehalose (60 mM) as eight groups (G5T0, G5T10, G5T100, G5T500, G3T0, G3T10, G3T100, and G3T500). After freeze-thawing process of cryopreservation, microscopic and oxidative stress parameters, and gene expression levels were investigated for understanding of possible impacts of taxifolin hydrate and trehalose. The study showed that G3T10 resulted in the highest post-thawed viability and mitochondrial activity. Moreover, all extenders with taxifolin hydrate reduced DNA fragmentation in comparison to G5T0, but DNA damage was prevented at the highest rate in presence of G5T10. The level of LPO significantly decreased in the groups G5T500 and G3T100, and the expression levels of NQO1, GCLC, and GSTP1 genes significantly increased in the groups G5T100, G5T500, G3T10, and G3T100 compared to the group G5T0. Finally, co-supplementation of tris-based extender having 3% glycerol with 60 mM trehalose and 10 μM taxifolin hydrate in cryopreservation extender may be recommended to improve the quality of post-thawed ram spermatozoa. However, further in vivo and in vitro studies are suggested to evaluate fertility rates of frozen-thawed ram spermatozoa co-supplemented with trehalose and taxifolin hydrate.
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Affiliation(s)
- Mustafa Numan Bucak
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Science, Selcuk University, Konya, Turkey.
| | - Nazan Keskin
- Department of Histology and Embryology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Pinar Ili
- Department of Medical Services and Techniques, Denizli Vocational School of Health Services, Pamukkale University, Denizli, Turkey.
| | - Mustafa Bodu
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Science, Selcuk University, Konya, Turkey
| | - Pınar Peker Akalın
- Department of Biochemistry, Faculty of Veterinary Science, Hatay Mustafa Kemal University, Hatay, Turkey
| | - Ali Erdem Öztürk
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Science, Selcuk University, Konya, Turkey
| | - Hüseyin Özkan
- Department of Genetics, Faculty of Veterinary Sciences, Hatay Mustafa Kemal University, Hatay, Turkey
| | - Tohid Rezaei Topraggaleh
- Department of Reproductive Biology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Fikret Sari
- Department of Plant and Animal Production, Tavas Vocational School, Pamukkale University, Denizli, Turkey
| | - Nuri Başpınar
- Department of Biochemistry, Faculty of Veterinary Science, Selcuk University, Konya, Turkey
| | - Şükrü Dursun
- Department of Gynecology and Obsterics, Faculty of Veterinary Sciences, Aksaray University, Aksaray, Turkey
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Galarza DA, López‐Sebastián A, Santiago‐Moreno J. Supplementing a skimmed milk–egg yolk‐based extender with L‐carnitine helps maintain the motility, membrane integrity and fertilizing capacity of chilled ram sperm. Reprod Domest Anim 2020; 55:805-813. [DOI: 10.1111/rda.13687] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 04/03/2020] [Indexed: 12/14/2022]
Affiliation(s)
- Diego A. Galarza
- Department of Animal Reproduction INIA Madrid Spain
- Faculty of Agriculture Sciences University of Cuenca Cuenca Ecuador
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17
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Alvarez M, Anel-Lopez L, Boixo JC, Chamorro C, Neila-Montero M, Montes-Garrido R, de Paz P, Anel L. Current challenges in sheep artificial insemination: A particular insight. Reprod Domest Anim 2020; 54 Suppl 4:32-40. [PMID: 31625241 DOI: 10.1111/rda.13523] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 07/15/2019] [Accepted: 07/16/2019] [Indexed: 12/01/2022]
Abstract
Ovine artificial insemination (OAI) is not commonly performed because of specific problems related to semen application techniques, leading to highly variable results. The ideal methodology (frozen-thawed semen/vaginal route) is unfeasible under field conditions due to the cervix morphology of the ewe, which prevents the process of intrauterine insemination necessary to obtain acceptable results. Currently, OAI commercial programmes use superficial cervical insemination, CAI (vaginal), with chilled semen (15°C) and intrauterine insemination, LAI (laparoscopic), with frozen-thawed semen. The ability to improve upon these contrasting techniques may be derived from examining certain poorly studied factors such as insemination time, productive state of females and alternatives of seminal preservation, some of which we reviewed in this work. This interim solution will remain in use until AI by the vaginal route with frozen-thawed semen is developed, but it poses new challenges in optimizing the freezing of the sperm and adapting the cervical (CAI) and/or transcervical intrauterine AI (TCAI). In this review, we address the current problems and evaluate their methodological (mechanical) and chemical (dilation) alternatives. Currently, TCAI is a methodologically complex technique with poor fertility results, so further studies are needed to improve the logistics of this procedure and the results of its application.
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Affiliation(s)
- Mercedes Alvarez
- Reproduction and Obstetrics, Department of Medicine, Surgery and Veterinary Anatomy, University of Leon, Leon, Spain
| | - Luis Anel-Lopez
- Anatomy, Department of Medicine, Surgery and Veterinary Anatomy, University of Leon, Leon, Spain
| | | | - Cesar Chamorro
- Anatomy, Department of Medicine, Surgery and Veterinary Anatomy, University of Leon, Leon, Spain
| | - Marta Neila-Montero
- Reproduction and Obstetrics, Department of Medicine, Surgery and Veterinary Anatomy, University of Leon, Leon, Spain
| | - Rafael Montes-Garrido
- Reproduction and Obstetrics, Department of Medicine, Surgery and Veterinary Anatomy, University of Leon, Leon, Spain
| | - Paulino de Paz
- Department of Molecular Biology, University of Leon, Leon, Spain
| | - Luis Anel
- Reproduction and Obstetrics, Department of Medicine, Surgery and Veterinary Anatomy, University of Leon, Leon, Spain
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ALVARES CTG, CRUZ JF, ROMANO CC, BRANDÃO FZ. Reproductive performance and luteal function of Santa Ines ewes inseminated by cervical retraction with fresh or frozen semen. REVISTA BRASILEIRA DE SAÚDE E PRODUÇÃO ANIMAL 2020. [DOI: 10.1590/s1519-99402121032020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
SUMMARY The artificial insemination (AI) by cervical retraction using fresh or commercially available frozen semen was evaluated. Santa Inês ewes (n=151) were assigned in five groups. Natural mating (NM) composed the control group. Four groups were submitted to hormonal treatment and timed insemination by cervical retraction (CRI) or laparoscopy (LAI), using fresh or frozen semen. To perform CRI, the ewes were kept in standing position. The time required to penetrate the cervical canal and to perform CRI were recorded; local deposition of semen and the reaction intensity of the ewe (weak, moderate or strong) were measured. Blood samples were collected to perform the progesterone dosage at days 0, 3, 5, 12 and 17 (day 0 = AI/NM). Non-return to estrus rate (NRE), pregnancy (at D35) and fertility (birth / mated ewes) were evaluated. Mean time for cervical penetration and CRI were 52.8 ± 21.2s and 3:26min ± 47s, respectively. Reaction intensity to CRI was weak or moderate in 92.3% of the ewes. Serum levels of progesterone after CRI, LAI or NM were similar. NRE of the inseminated ewes were similar, except for CRI with frozen semen, which was lower (P<0.05). Fertility rates were similar between CRI and LAI (35.4% and 42.2%, respectively). Artificial insemination by cervical retraction with ewes in a standing position is practical, and does not change the progesterone profile, providing reproductive rates similar to laparoscopy. However, the use of this technique along with commercial frozen semen presents low fertility rate.
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Gibbons AE, Fernandez J, Bruno-Galarraga MM, Spinelli MV, Cueto MI. Technical recommendations for artificial insemination in sheep. Anim Reprod 2019; 16:803-809. [PMID: 32368257 PMCID: PMC7189475 DOI: 10.21451/1984-3143-ar2018-0129] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Artificial insemination (AI) was the first important biotechnology applied to improve the genetics of farm animals. It allows the rapid and massive diffusion of desirable characteristics of males with high productive potential. We describe the different types of estrus induction and synchronization techniques and the use of the AI with fresh, chilled or frozen semen. Through the adequacy of the protocols of estrus synchronization and AI to the different production systems, the efficient use of reproductive techniques is possible, reaching acceptable pregnancy rates. Summary of reproductive results obtained using cervical and laparoscopic AI are presented.
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Affiliation(s)
- Alejandro Eduardo Gibbons
- Instituto Nacional de Tecnología Agropecuaria, Estación Experimental Agropecuaria Bariloche, Grupo de Reproducción en Rumiantes Menores, Bariloche, Argentina
| | - Jimena Fernandez
- Instituto Nacional de Tecnología Agropecuaria, Estación Experimental Agropecuaria Bariloche, Grupo de Reproducción en Rumiantes Menores, Bariloche, Argentina
| | - María Macarena Bruno-Galarraga
- Instituto Nacional de Tecnología Agropecuaria, Estación Experimental Agropecuaria Bariloche, Grupo de Reproducción en Rumiantes Menores, Bariloche, Argentina
| | - María Victoria Spinelli
- Universidad Nacional Lomas de Zamora, Facultad de Ciencias Agrarias, Buenos Aires, Argentina
| | - Marcela Isabel Cueto
- Instituto Nacional de Tecnología Agropecuaria, Estación Experimental Agropecuaria Bariloche, Grupo de Reproducción en Rumiantes Menores, Bariloche, Argentina
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Vallejo DA, Londoño JD, Yepes YA, Tamayo V, Mejia AF, Maldonado JG. Pregnancy rates in hair sheep after Ovsynch synchronization and a combined intracervical fixed-time artificial insemination and 10-day mating period. Vet World 2019; 12:1779-1783. [PMID: 32025112 PMCID: PMC6925041 DOI: 10.14202/vetworld.2019.1779-1783] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Accepted: 09/20/2019] [Indexed: 11/23/2022] Open
Abstract
Aim: This study aimed to evaluate the pregnancy rates in hair ewes using an Ovsynch synchronization protocol under a breeding system that combines fixed-time insemination plus a 10-day mating period as an alternative. Materials and Methods: Through an experimental study (n=27), ewes were randomly located into one of three treatments: (1) Pre-synch (n=9): Prostaglandin F2α (PGF2α)+Gonadotropin-releasing hormone (GnRH)+PGF2α+GnRH; (2) Ovsynch (n=9): GnRH+PGF2α+GnRH; and (3) control: Ewes bred by natural mating (NM) (n=9). Ewes were fixed-time inseminated (fixed-time artificial insemination [FTAI]) with fresh semen, collected just before the insemination time through vaginoscopy at 16 h after the second GnRH (gonadorelin) injection. Each experimental group was placed separately during 15 days and, after this time, fertile rams were allowed back with ewes for a 10-day mating period. Control group ewes remained with the rest of the herd suitable for breeding and were bred under NM. Pregnancy diagnosis was performed by ultrasound at 28-, 56-, and 84-day post-breeding to differentiate between FTAI and NM pregnancies. Total (FTAI±NM) pregnancy rates at 56-day post-breeding were used to compared Pre-synch, Ovsynch, and control. For this purpose, two-tailed proportions comparison z-test was used with a 95% confidence level, for testing as the null hypothesis whether two proportions were equal. Results: Pregnancy rates were higher in control ewes (66.4%) than FTAI (46.6%). When pregnancy rates after a 10-day mating period (40%) were added, the final rate (86.6%) was significantly (p<0.05) higher in Ovsynch-based protocols. The pregnancy rate was significantly lower in FTAI ewes compared to FTAI +10-day mating group (p<0.05). The overall pregnancy rate was 88.0, 85.7, and 67.0 (p>0.05) for Pre-synch, Ovsynch, and control ewes, respectively. Conclusion: These results provide evidence on the benefits of combined FTAI protocols for improving the reproductive efficiency of sheep.
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Affiliation(s)
- D A Vallejo
- Department of Theriogenology, School of Veterinary Medicine, OHVRI Research Group, Faculty of Agrarian Sciences, University of Antioquia, Medellin, Colombia
| | - J D Londoño
- National Learning Service - SENA, Center of Renewable Natural Resources - La Salada, Research Group La Salada, Colombia Government, Caldas, Colombia
| | - Y A Yepes
- Department of Theriogenology, School of Veterinary Medicine, OHVRI Research Group, Faculty of Agrarian Sciences, University of Antioquia, Medellin, Colombia
| | - V Tamayo
- Department of Theriogenology, School of Veterinary Medicine, OHVRI Research Group, Faculty of Agrarian Sciences, University of Antioquia, Medellin, Colombia
| | - A F Mejia
- Department of Theriogenology, School of Veterinary Medicine, OHVRI Research Group, Faculty of Agrarian Sciences, University of Antioquia, Medellin, Colombia
| | - J G Maldonado
- Department of Theriogenology, School of Veterinary Medicine, OHVRI Research Group, Faculty of Agrarian Sciences, University of Antioquia, Medellin, Colombia
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Grape Seed Procyanidin Extract (GSPE) Improves Goat Sperm Quality When Preserved at 4 °C. Animals (Basel) 2019; 9:ani9100810. [PMID: 31618989 PMCID: PMC6827076 DOI: 10.3390/ani9100810] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 10/09/2019] [Accepted: 10/14/2019] [Indexed: 12/11/2022] Open
Abstract
Simple Summary Artificial insemination (AI) is widely used in goats, stimulating the development of semen preservation techniques. Oxidative stress is considered to be the main cause of sperm quality decline over time. In this study, we explored the effect of grape seed procyanidin extract (GSPE) during the liquid preservation of goat semen. The results showed that adding GSPE into the basic diluent enhanced sperm quality by eliminating oxidative stress. The most suitable concentration for the preservation of goat semen at 4 °C was 30 mg/L. This work suggests that promotes the viability of goat semen stored at low temperatures and provides a theoretical foundation for the development of more efficient diluents. Abstract Grape seed procyanidin extract (GSPE) has been shown to possess antioxidative effects. This experiment was designed to study the effect of GSPE during the liquid storage of goat semen. Semen samples were collected from six sexually mature goats. The samples were treated with different concentrations of GSPE (10, 30, 50, and 70 mg/L) in basic diluent and stored at 4 °C for 120 h; samples without GSPE were used as the control group. The results showed that sperm motility, acrosome membrane integrity, mitochondrial activity, plasma membrane integrity, total antioxidative capacity (T-AOC), catalase (CAT) activity, and superoxide dismutase (SOD) activity in the treatment groups were significantly higher than in the control group, whereas malondialdehyde (MDA) content was lower than in the control group (p < 0.05). In the treatment group, sperm quality in the 30 mg/L GSPE group was significantly higher than the other groups (p < 0.05). Furthermore, artificial insemination (AI) results showed that litter sizes were higher in the 30 mg/L GSPE group than in the control group (p < 0.05). In summary, this experiment showed that adding GSPE to the basic diluent improved sperm quality and that 30 mg/L of GSPE was the most suitable concentration for the liquid preservation of goat semen at 4 °C.
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22
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Surgery on cervical folds for transcervical intrauterine artificial insemination with frozen-thawed semen enhances pregnancy rates in the sheep. Theriogenology 2019; 126:28-35. [DOI: 10.1016/j.theriogenology.2018.11.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 11/19/2018] [Accepted: 11/20/2018] [Indexed: 11/18/2022]
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Carneiro RPB, Macedo GG, DeRossi R, Costa-E-Silva EV, Souza MIL. Welfare and pregnancy rate of ewes undergoing transcervical artificial insemination with ketamine subarachnoid anesthesia. Trop Anim Health Prod 2019; 51:1179-1186. [PMID: 30685834 DOI: 10.1007/s11250-019-01805-5] [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: 09/19/2018] [Accepted: 01/06/2019] [Indexed: 11/29/2022]
Abstract
This study aimed to evaluate the impact of subarachnoid anesthesia with ketamine during transcervical artificial insemination (TCAI) on the welfare of ewes and on subsequent pregnancy rates. Ninety Suffolk adult ewes were randomized into three treatment groups: control group (CG), which underwent the TCAI procedure as established by cervical traction (CG; n = 30) and two groups that received subarachnoid anesthesia with ketamine at a dose of either 0.75 mg/kg (KE0.75; n = 30) or 1.5 mg/kg (KE1.5; n = 30) 5 min before the cervical traction procedure. Intrauterine insemination was performed using frozen semen from three males previously analyzed and approved for fertility. The use of subarachnoid anesthesia decreased ewes' vocalizations (P = 0.0001) and abdominal contraction (P = 0.0150) during cervical manipulations. The CG had more groans and vocalizations at the moment of cervix clamping and applicator passage through the cervix (P = 0.001). The cervix traction was facilitated by anesthesia. For the control group, most of the cervical traction was done just up to the middle of the vagina (P = 0.0021). Pregnancy rates increased significantly with anesthesia (P = 0.04) as shown by the rates of 40.0%, 56.7%, and 66.7% for CG, KE1.5, and KE0.75, respectively. The CG showed behaviors associated with absolute immobility, which is suggestive of distress. In brief, the use of ketamine in subarachnoid anesthesia for transcervical artificial insemination in ewes facilitated cervical traction, increased the pregnancy rate, and improved animal welfare.
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Affiliation(s)
- Renata P B Carneiro
- Department of Veterinary Medicine, Animal Reproduction Laboratory, Faculty of Veterinary Medicine, Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil
| | - Gustavo G Macedo
- Department of Animal Reproduction, Faculty of Veterinary Medicine, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - Rafael DeRossi
- Department of Veterinary Medicine, Surgery and Anesthesiology, Faculty of Veterinary Medicine, Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil.
| | - Eliane V Costa-E-Silva
- Department of Veterinary Medicine, Animal Reproduction Laboratory, Faculty of Veterinary Medicine, Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil
| | - Maria Inês L Souza
- Institute of Biosciences (InBio), Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil
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Gavin-Plagne L, Commin L, Bruyère P, Buff S, Joly T. Comparison Between an Animal-Derived Product Medium and a Chemically Defined Medium for Ram Sperm Cryopreservation. Biopreserv Biobank 2018; 17:11-17. [PMID: 30325650 DOI: 10.1089/bio.2018.0067] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Animal-derived products are widely used in sperm cryopreservation for their cryoprotective properties. These components, however, tend to be replaced because of sanitary risks. STEMALPHA.CRYO3 (Ref. 5617; Stem Alpha, Saint-Genis-l'Argentière, France), called "CRYO3," is a chemically defined preservation medium currently used for freezing human tissue and adult stem cells. The aim of this study was to evaluate the effect of a CRYO3-based medium on ram sperm freezing regarding in vitro parameters and in vivo fertility. Semen from nine Charolais rams was collected using an artificial vagina, then split and frozen using two media: a CRYO3-based medium or a control medium containing egg yolk (10%) and milk (45%). Sperm membrane integrity (propidium iodide [PI]/SYBR-14 and calcein AM/ethidium homodimer-1), acrosome integrity (FITC-PNA/PI), and mitochondrial membrane potential (JC-1) were assessed using flow cytometry, while functional membrane integrity was assessed using a hypo-osmotic swelling test and motility parameters, evaluated by computer-assisted sperm analysis. Pregnancy rates, prolificacy, and the average daily weight gain (DWG) of lambs were evaluated after performing 195 laparoscopic inseminations. The control medium showed significantly higher results than CRYO-based medium for all in vitro parameters, except for linearity and straightness (motions parameters). Conversely, field trials showed no significant difference between the control medium and the CRYO3-based medium for pregnancy rates (72.2% and 67.9%, respectively), prolificacy (1.8 and 1.6, respectively), and the DWG (0.34 and 0.35 kg/d, respectively). This preliminary study showed that CRYO3 cannot replace egg yolk and milk in freezing extenders for commercial purposes. However, as laparoscopic inseminations allowed a 67% pregnancy rate, CRYO3-based medium remains an option for international transport or long-term storage of genetic diversity.
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Affiliation(s)
- Lucie Gavin-Plagne
- 1 UPSP ICE 2016.A104, VetAgro Sup, Université de Lyon, Marcy l'Etoile, France
| | - Loris Commin
- 1 UPSP ICE 2016.A104, VetAgro Sup, Université de Lyon, Marcy l'Etoile, France
| | - Pierre Bruyère
- 1 UPSP ICE 2016.A104, VetAgro Sup, Université de Lyon, Marcy l'Etoile, France
| | - Samuel Buff
- 1 UPSP ICE 2016.A104, VetAgro Sup, Université de Lyon, Marcy l'Etoile, France
| | - Thierry Joly
- 2 UPSP ICE 2016.A104, ISARA-Lyon, Université de Lyon, Lyon, France
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Ren F, Feng T, Dai G, Wang Y, Zhu H, Hu J. Lycopene and alpha-lipoic acid improve semen antioxidant enzymes activity and cashmere goat sperm function after cryopreservation. Cryobiology 2018; 84:27-32. [DOI: 10.1016/j.cryobiol.2018.08.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Revised: 07/01/2018] [Accepted: 08/09/2018] [Indexed: 01/12/2023]
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