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Sharan O, Stefanyk V, Bartlewski PM, Sharan M. The effect of supplementing freezing extender with Mn 2+-, Zn 2+- or Cu 2+-nanosuccinate on select post-thaw characteristics of ram semen. Reprod Biol 2024; 24:100932. [PMID: 39153341 DOI: 10.1016/j.repbio.2024.100932] [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: 07/01/2024] [Revised: 08/11/2024] [Accepted: 08/12/2024] [Indexed: 08/19/2024]
Abstract
The effects of Mn2+-, Zn2+- or Cu2+-nanosuccinate added to freezing extender on select post-thaw semen characteristics were determined in six Texel rams (aged 2-4 years) during seasonal anestrus (April-May). Ejaculates (n = 6 per ram) collected into an artificial vagina were divided into ten isovolumetric fractions each. Semen was diluted in lactose-yolk-tris-citrate-glycerin medium and nanosuccinates (Mn2+- and Zn2+-nanosuccinate: 0.0 (control), 2.5, 5.0 and 7.5 μg/l; Cu2+-nanosuccinate: 0.0 (control), 1.25, 2.5 and 3.75 μg/l) were added to semen extender. Extended semen was loaded into 0.25-ml straws and frozen in liquid nitrogen. After thawing, sperm motility parameters were determined with computer assisted semen analysis (CASA), and the activity of superoxide dismutase (SOD), glutathione peroxidase (GPx) and catalase (CAT) was measured with a spectrophotometric technique. The addition of 5.0 μg/l of Mn2+- and Zn2+-nanosuccinate significantly increased the sperm progressive motility and both 2.5 and 5.0 μg/l improved sperm motion kinetics. Further, both nanosuccinates at a dose of 5.0 μg/l significantly decreased SOD activity and stimulated an increase in GPx and CAT activity in semen samples. Alternatively, the addition of Cu2+-nanosuccinate (highest dose) significantly reduced the progressive motility and velocity of ram spermatozoa, increased the percentage of sperm with acrosomal/head defects and seminal SOD activity, and depressed CAT (highest dose) and GPx (all doses) activity. In summary, the addition of Mn2+- and Zn2+-nanosuccinate to semen extender had beneficial effects on sperm motility/motion kinetics and structural integrity, whereas Cu2+-nanosuccinate generally had debilitating effects on the post-thaw semen characteristics in rams.
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Affiliation(s)
- Olha Sharan
- Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies in Lviv, 50 Pekarska St., Lviv 79010, Ukraine.
| | - Vasyl Stefanyk
- Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies in Lviv, 50 Pekarska St., Lviv 79010, Ukraine
| | - Pawel M Bartlewski
- Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, 50 Stone Rd., Guelph, ON N1G 2W1, Canada
| | - Mykola Sharan
- Institute of Animal Biology NAAS, 38 Stus St., Lviv 79034, Ukraine
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2
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Spanner EA, de Graaf SP, Rickard JP. Uterine tone influences fertility of Merino ewes following laparoscopic artificial insemination. Theriogenology 2024; 222:45-53. [PMID: 38615435 DOI: 10.1016/j.theriogenology.2024.04.002] [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: 03/06/2024] [Revised: 04/01/2024] [Accepted: 04/01/2024] [Indexed: 04/16/2024]
Abstract
Artificial insemination (AI) plays a critical role in facilitating rapid genetic and production gains within the sheep industry. However, variable rates of AI success remain a concern for the industry and a barrier to adoption. Furthermore, the degree to which female factors influence the success of intrauterine laparoscopic AI rather than natural mating remains unknown. As such, this study investigates the effect of several factors collected during the time of AI, on the success of intrauterine laparoscopic AI. Data was generously donated by artificial breeding companies and stud breeders during routine commercial AI operations. AI data was collected over 3 breeding seasons during commercial AI programs (N = 24 programs) using Merino ewes (N = 24,700). Sire ID (N = 253), time of AI following progesterone removal (approx. 43-59 h post removal), uterine tone and intra-abdominal fat (both scored 1-5) as well as age of the ewe were all recorded at the time of AI. Transcutaneous ultrasound subsequently determined pregnancy rate approximately 55 days post-AI. A multivariate regression analysis was performed and revealed pregnancy success to increase when semen was inseminated into a ewe with a uterine tone score of 4 or 5 (P < 0.001). The remaining factors fell short of significance within the multivariate model. An interclass coefficient variation matrix was also used to determine the proportion of variation contributed to AI success by random factors allocated in the model; site, sire, AI date and breeding season (45.99 %, 29.94 %, 15.15 % and 8.92 %, respectively). These results highlight the influence of uterine tone on ewe fertility following laparoscopic AI, but also that program location and the sire used can further modify this influence on pregnancy rate. These factors must now be considered in combination with semen factors per individual sire used during AI to ascertain the contribution of several factors to the success of laparoscopic AI in Australia.
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Affiliation(s)
- E A Spanner
- The University of Sydney, Faculty of Science, School of Life and Environmental Sciences, New South Wales, 2006, Australia.
| | - S P de Graaf
- The University of Sydney, Faculty of Science, School of Life and Environmental Sciences, New South Wales, 2006, Australia
| | - J P Rickard
- The University of Sydney, Faculty of Science, School of Life and Environmental Sciences, New South Wales, 2006, Australia
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3
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Salgado LC, Codognoto VM, Garcia R, Canuto LEF, Denadai R, Freitas-Dell'Aqua CP, Almeida Filho RA, Sitó-Silva L, Crespilho AM, Oba E. The use of sodium caseinate in the freezing of sheep semen. Reprod Domest Anim 2024; 59:e14573. [PMID: 38712666 DOI: 10.1111/rda.14573] [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: 01/31/2024] [Revised: 04/04/2024] [Accepted: 04/18/2024] [Indexed: 05/08/2024]
Abstract
The aim of this study was to assess the addition of 2% sodium caseinate in a commercial egg yolk-based medium in frozen ovine semen. Eight Dorper males were used for the study. The ejaculate was divided into two portions and frozen without (G1) or with the addition of 2% sodium caseinate (G2). Kinetic parameters were evaluated using CASA (computer-assisted sperm analysis), and membrane and acrosome integrity as well as oxidative stress were assessed using flow cytometry. After thawing, a thermoresistance test was conducted at time points T0 and T90. For the fertility test, 100 ewes were inseminated with semen from two rams selected based on in vitro parameters, one with good post-thaw quality (+70% total motility) and the other with low post-thaw quality (-55% total motility). For the fertility test, the females were divided into 4 groups for insemination: low-quality ram without caseinate (GBS = 25) and with caseinate (GBC = 25), and high-quality ram without caseinate (GAS = 25) and with caseinate (GAC = 25). Regarding the results of sperm kinetics, there was a statistically significant difference in the parameters of average path velocity (VAP) and curvilinear velocity (VCL) between the group frozen with BotuBov and the group with added caseinate. At time point T90, straight-line velocity maintained a trend (p < .06), with BotuBov® (BB group) being superior to caseinate this time, and in the linearity parameter, caseinate was superior to BotuBov®. Flow cytometry analysis showed no difference between any of the evaluated tests. In the fertility test, there was no statistically significant difference in the pregnancy rate between the BotuBOV® group (23%, 11/48) and the sodium caseinate group (BC group) (33%, 17/52), and no differences were observed in the male versus diluent interaction (p = .70). In conclusion, sodium caseinate supplementation did not influence sperm kinetic parameters and the fertility of sheep.
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Affiliation(s)
- Letícia C Salgado
- Department of Veterinary Surgery and Animal Reproduction, FMVZ, São Paulo State University, UNESP, Botucatu, São Paulo, Brazil
| | - Viviane M Codognoto
- Department of Veterinary Surgery and Animal Reproduction, FMVZ, São Paulo State University, UNESP, Botucatu, São Paulo, Brazil
| | - Rodrigo Garcia
- Department of Veterinary Surgery and Animal Reproduction, FMVZ, São Paulo State University, UNESP, Botucatu, São Paulo, Brazil
| | - Lucas E F Canuto
- Department of Veterinary Surgery and Animal Reproduction, FMVZ, São Paulo State University, UNESP, Botucatu, São Paulo, Brazil
| | - Renan Denadai
- Department of Veterinary Surgery and Animal Reproduction, FMVZ, São Paulo State University, UNESP, Botucatu, São Paulo, Brazil
| | - Camila P Freitas-Dell'Aqua
- Department of Veterinary Surgery and Animal Reproduction, FMVZ, São Paulo State University, UNESP, Botucatu, São Paulo, Brazil
| | - Rogério A Almeida Filho
- Department of Veterinary Surgery and Animal Reproduction, FMVZ, São Paulo State University, UNESP, Botucatu, São Paulo, Brazil
| | - Luan Sitó-Silva
- Department of Veterinary Surgery and Animal Reproduction, FMVZ, São Paulo State University, UNESP, Botucatu, São Paulo, Brazil
| | - André M Crespilho
- Department of Veterinary Surgery and Animal Reproduction, FMVZ, São Paulo State University, UNESP, Botucatu, São Paulo, Brazil
| | - Eunice Oba
- Department of Veterinary Surgery and Animal Reproduction, FMVZ, São Paulo State University, UNESP, Botucatu, São Paulo, Brazil
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Spanner EA, de Graaf SP, Rickard JP. Factors affecting the success of laparoscopic artificial insemination in sheep. Anim Reprod Sci 2024; 264:107453. [PMID: 38547814 DOI: 10.1016/j.anireprosci.2024.107453] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 01/06/2024] [Accepted: 03/10/2024] [Indexed: 05/01/2024]
Abstract
Successful artificial breeding underpins rapid genetic and production gains in animal agriculture. In sheep, artificial insemination with frozen semen is performed via intrauterine laparoscopy as frozen-thawed spermatozoa do not traverse the cervix in sufficient numbers for high fertility and transcervical insemination is anatomically impossible in most ewes. Historically, laparoscopic artificial insemination has always been considered reasonably successful, but recent anecdotal reports of poor fertility place it at risk of warning adoption. Understanding the male, female and environmental factors that influence the fertility of sheep is warranted if the success of artificial insemination is to be improved and genetic progress maximised for the sheep industry. This review details the current practice of laparoscopic AI in sheep. It explores the effects of semen quantity and quality, the ewe, her preparation, and environmental conditions, on the fertility obtained following laparoscopic artificial insemination.
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Affiliation(s)
- E A Spanner
- The University of Sydney, Faculty of Science, School of Life and Environmental Sciences, NSW 2006, Australia.
| | - S P de Graaf
- The University of Sydney, Faculty of Science, School of Life and Environmental Sciences, NSW 2006, Australia
| | - J P Rickard
- The University of Sydney, Faculty of Science, School of Life and Environmental Sciences, NSW 2006, Australia
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Araújo Silva RAJ, Monteiro MM, Costa JAS, Mergulhão FCC, Monteiro PLJ, Silva DMF, Santos Filho AS, Souza AF, Batista AM, Guerra MMP. Dimethylformamide Preserves the Integrity of Cryopreserved Goat Semen in a Soybean Lecithin-Based Extender. Biopreserv Biobank 2022; 20:502-508. [PMID: 34788548 DOI: 10.1089/bio.2021.0049] [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] [Indexed: 11/13/2022] Open
Abstract
This study investigated the cryoprotectant effects of dimethylformamide (DMF), ethylene glycol (EG), and dimethyl sulfoxide (DMSO) as substitutes for glycerol (GLY) in a soybean lecithin (SL)-based extender in the cryopreservation of buck sperm. In this study, the semen of three Saanen bucks was individually extended in SL supplemented with 5% GLY (control), DMF, EG, or DMSO. After this, the extended semen was cryopreserved and two straws from each group were thawed (37°C for 30 seconds), pooled, and analyzed for sperm motion parameters, plasma membrane integrity (PMI), acrosomal integrity (ACI), and high mitochondrial membrane potential (HMMP). Samples were analyzed after 15 minutes (T0) and after 2 hours of incubation at 37°C (T2). The results revealed higher values of motility (total and progressive) and sperm motion parameters for DMF than the other cryoprotectants (p < 0.0001). PMI and HMMP did not differ (p > 0.05) between GLY and DMF, but ACI was higher (p < 0.01) for DMF compared with GLY. Based on these results, DMF and GLY samples were used in heterologous in vitro fertilization assays by using bovine oocytes (n = 337) obtained from a slaughterhouse. No differences (p > 0.05) were observed between GLY and DMF for unfertilized (GLY: 38.8%; DMF: 25.33%), pronucleus (GLY: 25.68%; DMF: 27.92%), and cleavage rates (GLY: 35.52%; DMF: 46.75%). Based on these results, it is concluded that DMF preserves sperm motion characteristics and ACI better than GLY, EG, and DMSO, and it is the penetrating cryoprotectant of choice for the cryopreservation of buck sperm in SL extender.
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Affiliation(s)
| | - Millena M Monteiro
- Andrology Laboratory, Department of Veterinary Medicine, Universidade Federal Rural de Pernambuco, Recife, Brazil
| | - Joana A S Costa
- Andrology Laboratory, Department of Veterinary Medicine, Universidade Federal Rural de Pernambuco, Recife, Brazil
| | - Flávio C C Mergulhão
- Andrology Laboratory, Department of Veterinary Medicine, Universidade Federal Rural de Pernambuco, Recife, Brazil
| | | | - Diogo M F Silva
- Laboratório de Fisiologia Animal e Molecular Aplicada, Departamento de Fisiologia Animal, Universidade Federal Rural de Pernambuco, Recife, Brazil
| | | | - Andréia F Souza
- Departamento de Zootecnia, Universidade Federal Rural de Pernambuco, Recife, Brazil
| | - André M Batista
- Andrology Laboratory, Department of Veterinary Medicine, Universidade Federal Rural de Pernambuco, Recife, Brazil
| | - Maria Madalena P Guerra
- Andrology Laboratory, Department of Veterinary Medicine, Universidade Federal Rural de Pernambuco, Recife, Brazil
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Motility Assessment of Ram Spermatozoa. BIOLOGY 2022; 11:biology11121715. [PMID: 36552225 PMCID: PMC9774426 DOI: 10.3390/biology11121715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/11/2022] [Accepted: 11/22/2022] [Indexed: 11/29/2022]
Abstract
For successful fertilisation to occur, spermatozoa need to successfully migrate through the female reproductive tract and penetrate the oocyte. Predictably, poor sperm motility has been associated with low rates of fertilisation in many mammalian species, including the ram. As such, motility is one of the most important parameters used for in vitro evaluation of ram sperm quality and function. This review aims to outline the mechanical and energetic processes which underpin sperm motility, describe changes in motility which occur as a result of differences in sperm structure and the surrounding microenvironment, and assess the effectiveness of the various methods used to assess sperm motility in rams. Methods of subjective motility estimation are convenient, inexpensive methods widely used in the livestock industries, however, the subjective nature of these methods can make them unreliable. Computer-assisted sperm analysis (CASA) technology accurately and objectively measures sperm motility via two-dimensional tracing of sperm head motion, making it a popular method for sperm quality assurance in domesticated animal production laboratories. Newly developed methods of motility assessment including flagellar tracing, three-dimensional sperm tracing, in vivo motility assessment, and molecular assays which quantify motility-associated biomarkers, enable analysis of a new range of sperm motion parameters with the potential to reveal new mechanistic insights and improve ram semen assessment. Experimental application of these technologies is required to fully understand their potential to improve semen quality assessment and prediction of reproductive success in ovine artificial breeding programs.
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Effects of Three Semen Extenders, Breeding Season Month and Freezing-Thawing Cycle on Spermatozoa Preservation of Portuguese Merino Sheep. Animals (Basel) 2021; 11:ani11092619. [PMID: 34573585 PMCID: PMC8467096 DOI: 10.3390/ani11092619] [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: 07/31/2021] [Revised: 09/01/2021] [Accepted: 09/03/2021] [Indexed: 11/16/2022] Open
Abstract
Simple Summary Spermatozoa (SPZ) viability, morphology and the kinetics of fresh and thawing Portuguese Merino Semen were evaluated at different breeding season months using an owner egg yolk-based semen extender (S-EXT) and two commercial lecithin-based semen extenders. The main significant differences between S-EXT were observed for thawed semen. The viability (30% vs. 15% of alive SPZ; p < 0.001), total motility (74% vs. 34%; p < 0.001), total progressive motility (18% vs. 5%; p < 0.001), straight line velocity (37 vs. 22 μm/s; p < 0.001) and beat cross frequency (13 vs. 6 Hz; p < 0.05) were higher in the owner egg yolk than in egg yolk-free-based S-EXT. Significant interactions between S-EXT, semen processing and/or months of semen collection were observed on several of the 22 evaluated SPZ parameters and should be elucidated in further studies. The egg yolk-based S-EXT was more consistent across the months in cryopreserving SPZ than commercial egg yolk- free-based S-EXT and still seems, to the present day, the most appropriate S-EXT to be used in (Merino) sheep. Abstract This study aimed to evaluate and compare the effect of three semen extenders (S-EXT) on 22 spermatozoa (SPZ) parameters (subjective and computer-assisted sperm analysis evaluations), before and after semen cryopreservation throughout different months of the breeding season in the Portuguese Merino breed. According to the multivariable model, the SPZ viability (alive %), kinetics subjective individual motility, total motility, total progressive motility and its subpopulations, and beat cross frequency) were higher in the egg yolk-based S-EXT improved by Estação Zootécnica National (Portugal) than in Ovixcell® or Andromed® extenders. All the differences were only observed in thawed semen, except for total motility and total progressive motility, in which Ovixcell® also showed the poorest results on fresh semen. An interaction effect between S-EXT and semen processing was observed on 72.3% (17/22) of the evaluated parameters, evidencing a variable cryoprotective action between S-EXT. The SPZ viability was poorer in the onset of the breeding season (end of April/early May) than in the previous middle breeding season (November/early December), suggesting the influence of a short anoestrous season on ejaculate quality, even though the volume and SPZ concentration of the ejaculates remained stable throughout the experiment. Additionally, S-EXT x semen processing x month interaction effect on 59.1% (13/22) of the evaluated parameters evidenced the importance of SPZ time collection in a natural environment to cryopreserve ram’s semen. We concluded that, overall, the egg yolk-based S-EXT provided a greater value to the cryopreservation of Merino rams´ semen. Nevertheless, the causes of the interaction effect between S-EXT, semen processing and/or month on several SPZ parameters should be addressed, including SPZ molecular research in new studies, in order to improve egg yolk-based as well as in egg yolk-free-based S-EXT.
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Arruda LCP, Tobal LFM, Carneiro GF, Guerra MMP. Zinc oxide nanoparticles alter the membrane potential of mitochondria from post-thawed ram spermatozoa. Small Rumin Res 2021. [DOI: 10.1016/j.smallrumres.2021.106466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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A multiplier peroxiporin signal transduction pathway powers piscine spermatozoa. Proc Natl Acad Sci U S A 2021; 118:2019346118. [PMID: 33674382 DOI: 10.1073/pnas.2019346118] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The primary task of a spermatozoon is to deliver its nuclear payload to the egg to form the next-generation zygote. With polyandry repeatedly evolving in the animal kingdom, however, sperm competition has become widespread, with the highest known intensities occurring in fish. Yet, the molecular controls regulating spermatozoon swimming performance in these organisms are largely unknown. Here, we show that the kinematic properties of postactivated piscine spermatozoa are regulated through a conserved trafficking mechanism whereby a peroxiporin ortholog of mammalian aquaporin-8 (Aqp8bb) is inserted into the inner mitochondrial membrane to facilitate H2O2 efflux in order to maintain ATP production. In teleosts from more ancestral lineages, such as the zebrafish (Danio rerio) and the Atlantic salmon (Salmo salar), in which spermatozoa are activated in freshwater, an intracellular Ca2+-signaling directly regulates this mechanism through monophosphorylation of the Aqp8bb N terminus. In contrast, in more recently evolved marine teleosts, such the gilthead seabream (Sparus aurata), in which spermatozoa activation occurs in seawater, a cross-talk between Ca2+- and oxidative stress-activated pathways generate a multiplier regulation of channel trafficking via dual N-terminal phosphorylation. These findings reveal that teleost spermatozoa evolved increasingly sophisticated detoxification pathways to maintain swimming performance under a high osmotic stress, and provide insight into molecular traits that are advantageous for postcopulatory sexual selection.
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Lv C, Larbi A, Memon S, Liang J, Fu X, Wu G, Quan G. The Effects of Antifreeze Protein III Supplementation on the Cryosurvival of Goat Spermatozoa During Cryopreservation. Biopreserv Biobank 2021; 19:298-305. [PMID: 33524297 DOI: 10.1089/bio.2020.0140] [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] [Indexed: 11/12/2022] Open
Abstract
Antifreeze protein (AFP) has been shown to have beneficial effects on frozen mammalian spermatozoa. However, rare reports have been published regarding the use of AFPs in storage of goat spermatozoa. The aim of this study was to investigate the effects of AFPIII on the quality of goat semen during cryopreservation. Ejaculates were collected from six Yunshang black goats through an artificial vagina. The collected semen was pooled, divided into five aliquots, and diluted with the commercial bull semen extender containing: no AFPIII (AFP-0, control), 1 μg/mL AFPIII (AFP-1), 10 μg/mL AFPIII (AFP-10), 50 μg/mL AFPIII (AFP-50), and 100 μg/mL AFPIII (AFP-100), respectively. Spermatozoa motility, membrane integrity, acrosome integrity, mitochondrial function, distribution of phosphatidylserine, and formation of reactive oxygen species (ROS) were measured after the freezing and thawing process. The results showed that the spermatozoa motility, membrane integrity, acrosome integrity, and mitochondrial function were significantly higher in frozen spermatozoa using the extender containing 1 μg/mL AFPIII as compared with the other groups (p < 0.05). Furthermore, the extender supplemented with 1 μg/mL of AFPIII resulted in higher viable and lower nonviable spermatozoa compared with the other treated groups (p < 0.05), after staining using Annexin V-fluoresceine isothiocyanate (Annexin V-FITC) and Propidium Iodide. No significant differences were found between these groups in relation to viable cells with lower ROS production. In conclusion, the addition of AFPIII to the freezing extender improved the post-thaw quality of goat semen. The optimal concentration used in this study was 1 μg/mL. However, excessively high concentrations of AFPIII were unable to exhibit their cryoprotective effects on goat spermatozoa. However, the presence of AFPIII cannot mitigate oxidative stress caused by the freezing and thawing process. In addition, in vitro fertilization or artificial insemination can further evaluate the effects of AFPIII on frozen-thawed goat spermatozoa.
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Affiliation(s)
- Chunrong Lv
- Department of Small Ruminant Research, Yunnan Animal Science and Veterinary Institute, Kunming, China.,Yunnan Provincial Engineering Laboratory of Animal Genetic Resource Conservation and Germplasm Enhancement, Kunming, China
| | - Allai Larbi
- Department of Small Ruminant Research, Yunnan Animal Science and Veterinary Institute, Kunming, China
| | - Sameeullah Memon
- Department of Small Ruminant Research, Yunnan Animal Science and Veterinary Institute, Kunming, China
| | - Jiachong Liang
- Department of Small Ruminant Research, Yunnan Animal Science and Veterinary Institute, Kunming, China.,Yunnan Provincial Engineering Laboratory of Animal Genetic Resource Conservation and Germplasm Enhancement, Kunming, China
| | - Xiangwei Fu
- National Engineering Laboratory for Animal Breeding, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Guoquan Wu
- Department of Small Ruminant Research, Yunnan Animal Science and Veterinary Institute, Kunming, China.,Yunnan Provincial Engineering Laboratory of Animal Genetic Resource Conservation and Germplasm Enhancement, Kunming, China
| | - Guobo Quan
- Department of Small Ruminant Research, Yunnan Animal Science and Veterinary Institute, Kunming, China.,Yunnan Provincial Engineering Laboratory of Animal Genetic Resource Conservation and Germplasm Enhancement, Kunming, China
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Correia LFL, Espírito-Santo CG, Braga RF, Carvalho-de-Paula CJ, da Silva AA, Brandão FZ, Freitas VJF, Ungerfeld R, Souza-Fabjan JMG. Addition of antifreeze protein type I or III to extenders for ram sperm cryopreservation. Cryobiology 2020; 98:194-200. [PMID: 33186590 DOI: 10.1016/j.cryobiol.2020.11.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 09/24/2020] [Accepted: 11/03/2020] [Indexed: 10/23/2022]
Abstract
Antifreeze proteins (AFP) play an important role in cellular survival at sub-zero temperatures. This study assessed the effect of AFP type I or III in semen extender (TRIS-egg yolk) for ram sperm cryopreservation. Pooled semen of four rams were allocated into five treatments: Control (CONT, without AFP); AFP Type I [0.1 (AFPI-0.1) or 0.5 (AFPI-0.5) μg/mL]; or III [0.1 (AFPIII-0.1) or 0.5 (AFPIII-0.5) μg/mL], and then frozen in six replicates. Treatments affected kinetic parameters, plasma membrane integrity and morphology (P < 0.05). The AFPIII-0.1 presented lesser total motility. Linearity was greater in AFPI-0.1, AFPI-0.5 and AFPIII-0.5 and straightness was greater in all AFP-supplemented extenders. Plasma membrane integrity was greater in AFPI-0.1 and AFPI-0.5. All AFP groups had greater percentage of normal sperm than CONT. No differences (P > 0.05) were observed in hypoosmotic test, sperm acrosome status, mitochondrial activity, chromatin condensation, perivitelline membrane binding rate and lipoperoxidation. In conclusion, the use of AFP, predominantly type I, may increase sperm cell protection during cryopreservation, with no adverse effect on potential fertilization capacity or increase in reactive oxygen species, being a potential cryoprotectant to ram sperm.
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Affiliation(s)
- Lucas Francisco L Correia
- Faculdade de Veterinária, Universidade Federal Fluminense, Av. Vital Brazil Filho, 64, CEP 24230-340, Niterói, RJ, Brazil.
| | - Caroline G Espírito-Santo
- Faculdade de Veterinária, Universidade Federal Fluminense, Av. Vital Brazil Filho, 64, CEP 24230-340, Niterói, RJ, Brazil
| | - Rachel F Braga
- Faculdade de Veterinária, Universidade Federal Fluminense, Av. Vital Brazil Filho, 64, CEP 24230-340, Niterói, RJ, Brazil
| | - Cleber J Carvalho-de-Paula
- Faculdade de Veterinária, Universidade Federal Fluminense, Av. Vital Brazil Filho, 64, CEP 24230-340, Niterói, RJ, Brazil
| | - Andreza A da Silva
- Faculdade de Medicina Veterinária, Universidade Federal Rural do Rio de Janeiro, Rodovia BR 465, Km 07, Seropédica, RJ, 23890-000, Brazil
| | - Felipe Z Brandão
- Faculdade de Veterinária, Universidade Federal Fluminense, Av. Vital Brazil Filho, 64, CEP 24230-340, Niterói, RJ, Brazil
| | - Vicente J F Freitas
- Laboratório de Fisiologia e Controle da Reprodução, Universidade Estadual do Ceará, Fortaleza, CE, Brazil
| | - Rodolfo Ungerfeld
- Departamento de Biociencias Veterinarias, Facultad de Veterinaria, Universidad de la República, Lasplaces 1620, Montevideo, 11600, Uruguay
| | - Joanna M G Souza-Fabjan
- Faculdade de Veterinária, Universidade Federal Fluminense, Av. Vital Brazil Filho, 64, CEP 24230-340, Niterói, RJ, Brazil.
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Influence of Season and Liquid Storage at 16 °C on Beni Arouss Bucks' Semen Quality. Animals (Basel) 2020; 10:ani10111986. [PMID: 33137921 PMCID: PMC7692028 DOI: 10.3390/ani10111986] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 10/09/2020] [Accepted: 10/26/2020] [Indexed: 02/07/2023] Open
Abstract
Simple Summary Goat production plays an important economic and social role in Northern Moroccan farming. Beni Arouss is an autochthonous North Moroccan goat breed. The use of artificial insemination can largely contribute to optimised preservation and dissemination of valuable traits of this breed and lead to improved productivity. During liquid storage, the stability of semen good quality remains crucial in order to provide greater flexibility between the artificial insemination center and farms where the insemination of does needs to be performed. The study aims to assess the effect of storage and season of the year on fresh semen of Beni Arouss goats. Every month, ejaculates were collected from bucks and were extended and stored at 16 °C for 24 h. Semen motility, viability and normal morphology were assessed at 0, 4, 8 and 24 h after collection. As expected, these parameters showed a significant reduction within 24 h of storage and during all seasons. However, semen collected in summer maintained a better quality after 24 h of storage at 16 °C than semen collected during the other periods. Therefore, the storage ability of Beni Arouss bucks’ semen stored at 16 °C was higher during the summer. Abstract The study aimed at determining the effect of storage and season on fresh semen of Beni Arouss goats. Ejaculates were collected at monthly intervals from seven mature bucks and were extended at a final concentration of 800 × 106 spermatozoa. ml-1 and stored at 16 °C for 24 h. Semen motility, viability and normal morphology were assessed at 0, 4, 8 and 24 h after collection. Motility and normal morphology parameters were recorded using computer-assisted sperm analysis (CASA) and viability was analyzed using eosin–nigrosin staining. As expected, motility, viability and normal morphology parameters showed a significant reduction within 24 h of storage and during all seasons (p < 0.05). However, semen collected in summer maintained a better quality after 24 h of storage at 16 °C than semen collected during the other periods (p < 0.05). In conclusion, the storage ability of Beni Arouss bucks’ semen stored at 16 °C was significantly higher during the summer.
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Treatment of rams with melatonin implants in the non-breeding season improves post-thaw sperm progressive motility and DNA integrity. Anim Reprod Sci 2020; 221:106579. [PMID: 32919308 DOI: 10.1016/j.anireprosci.2020.106579] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 08/16/2020] [Accepted: 08/17/2020] [Indexed: 11/24/2022]
Abstract
In the Merino ram, it is unclear whether cryopreserved sperm function and fertility is compromised when collected during the non-breeding season, when Merino ewes are seasonally anestrus. It was therefore investigated whether treatment with melatonin could improve sperm function or fertility when semen was collected during the period Merino ewes were seasonally anestrus. There were 16 Merino rams treated or not treated with melatonin implants during the non-breeding season of ewes (September). Ejaculates were collected before melatonin treatment (Week 0), during the period of melatonin release (Week 7) and subsequent breeding season (Week 23). In vitro sperm function was assessed before freezing, and at 0- and 3 -hs post-thaw. Fertility was determined through intrauterine insemination of ewes (n = 966) with frozen-thawed samples, during the breeding season. Compared to Week 0 values, spermatozoa from melatonin-treated rams had greater progressive motility at Week 7 (P = 0.019) and less DNA fragmentation (P = 0.003) at Weeks 7 and 23, whilst spermatozoa from non-treated rams were unchanged during these time-periods. There were no other treatment effects on sperm function or fertility (P > 0.05). In ejaculates collected during Week 23, there were no effects of treatment either before freezing or post-thawing. Sperm from ejaculates collected at Week 23, however, had lesser pre-freezing/post-thawing total motility and resulted in lower pregnancy rates (P < 0.05). It is concluded there are no effects of season on sperm quality or fertility of Merino rams and that melatonin treatment subtly improves quality of spermatozoa following cryopreservation.
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Yániz JL, Silvestre MA, Santolaria P, Soler C. CASA-Mot in mammals: an update. Reprod Fertil Dev 2019. [PMID: 29514734 DOI: 10.1071/rd17432] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Sperm motility is one of the most widely used parameters of sperm quality. Computer-aided sperm motility analysis (CASA-Mot) systems were developed to reduce the subjectivity of sperm motility assessment, and have had broad scientific and practical acceptance. In this review, the sources of variation and current applications of this technology and its relationships with other sperm quality tests are described in detail. Despite remarkable advances in the technique, there is still great need for standardisation in many species, and the numerous factors that affect the results make it difficult to provide universally accepted criteria for classifying semen samples based on sperm motility characteristics. The main fields for CASA-Mot include the study of male fertility and pathologies, evaluation of the effects of physical and chemical agents, improvement of epidemiological survey studies, more precise calculation of seminal doses for farm animals, realisation of basic studies about sperm function, improvement of sperm technologies such as cryopreservation and quality control analysis. Numerous relationships have been established between CASA-Mot and other sperm quality tests, although most of these parameters are complementary. Future CASA-Mot systems will probably be able to integrate several sperm quality parameters with motility.
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Affiliation(s)
- J L Yániz
- TECNOGAM Research Group, Environmental Sciences Institute (IUCA), Department of Animal Production and Food Sciences, University of Zaragoza, 22071, Huesca, Spain
| | - M A Silvestre
- Department of Cellular Biology, Functional Biology and Physical Anthropology, University of Valencia, 46100, Burjassot, Valencia, Spain
| | - P Santolaria
- TECNOGAM Research Group, Environmental Sciences Institute (IUCA), Department of Animal Production and Food Sciences, University of Zaragoza, 22071, Huesca, Spain
| | - C Soler
- Department of Cellular Biology, Functional Biology and Physical Anthropology, University of Valencia, 46100, Burjassot, Valencia, Spain
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15
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Lv C, Larbi A, Wu G, Hong Q, Quan G. Improving the quality of cryopreserved goat semen with a commercial bull extender supplemented with resveratrol. Anim Reprod Sci 2019; 208:106127. [PMID: 31405456 DOI: 10.1016/j.anireprosci.2019.106127] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 05/17/2019] [Accepted: 07/15/2019] [Indexed: 01/22/2023]
Abstract
The purpose of the current study was to evaluate the effects of resveratrol (RSV) on the quality of frozen-thawed goat sperm. Semen samples from four bucks were divided into five aliquots and diluted with a commercial bull semen extender containing: no antioxidant (RSV-0, control), 10 μM RSV (RSV-10), 50 μM RSV (RSV-50), 100 μM RSV (RSV-100) and 250 μM RSV (RSV-250). After thawing, sperm motility, abnormal morphology, membrane and acrosome integrity, mitochondrial activity, phosphatidylserine (PS) distribution, and oxidative stress were evaluated. The results indicated that in comparison with the control, when the concentration of RSV was 10 or 50 μM, the total motility, progressive motility, membrane and acrosome integrity, and mitochondrial activity of post-thaw spermatozoa was greater (P < 0.05). Additionally, the use of extenders containing RSV-10 or RSV-50 resulted in a greater percentage of viable spermatozoa as compared to the other groups (P < 0.05). Importantly, there were more viable spermatozoa (49.61 ± 0.61%) and less non-viable spermatozoa (49.16 ± 1.01%) in the RSV-50 group compared to the other extenders (P < 0.05). Furthermore, the use of the extenders containing RSV-10 and -50 resulted in a reduction in ROS production in frozen-thawed spermatozoa as compared to the control (P < 0.05). There, however, was no difference among extenders for abnormal morphology and PS distribution. In conclusion, supplementation with RSV, at a concentration of 10 or 50 μM in the semen extender, can improve the post-thaw goat sperm quality, which may occur as a consequence of inhibition of ROS generation.
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Affiliation(s)
- Chunrong Lv
- Yunnan Animal Science and Veterinary Institute, Jindian, Panlong county, Kunming city, Yunnan province, China; Yunnan Provincial Engineering Laboratory of Animal Genetic Resource Conservation and Germplasm Enhancement, Kunming city, China
| | - Allai Larbi
- Yunnan Animal Science and Veterinary Institute, Jindian, Panlong county, Kunming city, Yunnan province, China; Yunnan Provincial Engineering Laboratory of Animal Genetic Resource Conservation and Germplasm Enhancement, Kunming city, China
| | - Guoquan Wu
- Yunnan Animal Science and Veterinary Institute, Jindian, Panlong county, Kunming city, Yunnan province, China; Yunnan Provincial Engineering Laboratory of Animal Genetic Resource Conservation and Germplasm Enhancement, Kunming city, China
| | - Qionghua Hong
- Yunnan Animal Science and Veterinary Institute, Jindian, Panlong county, Kunming city, Yunnan province, China; Yunnan Provincial Engineering Laboratory of Animal Genetic Resource Conservation and Germplasm Enhancement, Kunming city, China
| | - Guobo Quan
- Yunnan Animal Science and Veterinary Institute, Jindian, Panlong county, Kunming city, Yunnan province, China; Yunnan Provincial Engineering Laboratory of Animal Genetic Resource Conservation and Germplasm Enhancement, Kunming city, China.
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El Kadili S, Raes M, Bister JL, Archa B, Chentouf M, Kirschvink N. Effect of season on sexual behavior, testicular measurements and seminal characteristics in "Beni arouss" North Moroccan bucks. Anim Reprod Sci 2018; 201:41-54. [PMID: 30579734 DOI: 10.1016/j.anireprosci.2018.12.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 11/28/2018] [Accepted: 12/14/2018] [Indexed: 11/26/2022]
Abstract
Changes in anatomical, behavioural and seminal characteristics were measured throughout the year in seven Beni Arouss bucks maintained at a latitude of 35 °N. Testicular size varied significantly. There were the greatest values during the summer and autumn for scrotal circumference and least in the winter for testicular length. Values for most variables related to sexual behavior were not affected by season except the number of mounts before first ejaculation which was least in the summer. No differences were detected between seasons in terms of semen volume. The sperm concentration, viability and percentage of normal sperm, however, were less during the winter period. The size of sperm heads was larger in the autumn and motility of spermatozoa was greater in the summer and autumn. Results from the correlation analysis indicated that the majority of conventional seminal characteristics were correlated with testis measurements (P < 0.05; r < 0.5). Values for conventional and CASA motility variables indicated there were positive correlations between viability and progressive motility (r = 0.4; P < 0.05) and between the percentage of normal sperm and straight line and average path velocity (r = 0.4; P < 0.05). A global reproduction performance score was established for each buck, which allowed for assessment of magnitude of seasonal changes for each individual. These global score values indicated there was a greater reproductive performance for all bucks during summer and autumn. This study described for the first time seasonal variations of reproductive characteristics of Beni Arouss bucks and results indicate that even though there is a maximal capacity for reproductive performance during the summer and autumn, breeding should be possible throughout the year.
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Affiliation(s)
- Sara El Kadili
- University of Namur, Faculty of Sciences, Department of Veterinary Medicine, Integrated Veterinary Research Unit, Namur Research Institute for Life Sciences (NARILIS), Rue de Bruxelles 61, B-5000, Namur, Belgium; Ecole Nationale d'Agriculture de Meknès, Department of Animal Production, Route Haj Kaddour, BP. S/40, 50001, Meknes, Morocco.
| | - Marianne Raes
- University of Namur, Faculty of Sciences, Department of Veterinary Medicine, Integrated Veterinary Research Unit, Namur Research Institute for Life Sciences (NARILIS), Rue de Bruxelles 61, B-5000, Namur, Belgium
| | - Jean-Loup Bister
- University of Namur, Faculty of Sciences, Department of Veterinary Medicine, Integrated Veterinary Research Unit, Namur Research Institute for Life Sciences (NARILIS), Rue de Bruxelles 61, B-5000, Namur, Belgium
| | - Bouchaib Archa
- Ecole Nationale d'Agriculture de Meknès, Department of Animal Production, Route Haj Kaddour, BP. S/40, 50001, Meknes, Morocco
| | - Mouad Chentouf
- Institut National de la Recherche Agronomique, Regional Center of Tangier, Bd Sidi Mohamed Ben abdellah78, 90010, Tangier, Morocco
| | - Nathalie Kirschvink
- University of Namur, Faculty of Sciences, Department of Veterinary Medicine, Integrated Veterinary Research Unit, Namur Research Institute for Life Sciences (NARILIS), Rue de Bruxelles 61, B-5000, Namur, Belgium.
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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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18
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Spermatic mitochondria: role in oxidative homeostasis, sperm function and possible tools for their assessment. ZYGOTE 2018; 26:251-260. [PMID: 30223916 DOI: 10.1017/s0967199418000242] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
SummaryDespite sperm mitochondrial relevance to the fertilization capacity, the processes involved in the production of ATP and functional dynamics of sperm mitochondria are not fully understood. One of these processes is the paradox involved between function and formation of reactive oxygen species performed by the organelle. Therefore, this review aimed to provide data on the role of sperm mitochondria in oxidative homeostasis and functionality as well the tools to assess sperm mitochondrial function.
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19
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Arruda L, Silva RA, Monteiro M, Silva R, Oliveira A, Mergulhão F, Monteiro Jr P, Batista A, Guerra M. Avaliação in vitro do sêmen congelado de carneiros com diluidor suplementado com miricetina. ARQ BRAS MED VET ZOO 2018. [DOI: 10.1590/1678-4162-9671] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
RESUMO O objetivo deste estudo foi avaliar o efeito da suplementação do diluidor de congelação de sêmen ovino com o flavonoide miricetina contra os danos ocasionados aos espermatozoides. Oito pools de sêmen, obtidos de quatro reprodutores ovinos, foram congelados com diferentes concentrações de miricetina (0, 1, 10, 100 e 1000nM). Após o descongelamento, o sêmen foi avaliado quanto à cinética espermática, à integridade das membranas plasmática e acrossomal, ao potencial de membrana mitocondrial, aos níveis de ROS intracelular, à peroxidação lipídica e à estabilidade de membrana. Amostras tratadas com miricetina 10nM apresentaram menor percentual de células rápidas (P≤0,05), quando comparadas ao grupo miricetina 1000nM. Amostras do grupo controle apresentaram maior (P≤0,05) VAP que o grupo 10nM de miricetina, enquanto amostras criopreservadas com miricetina (10, 100 e 1000nM) evidenciaram maior (P<0,05) BCF, quando comparadas ao grupo controle. O grupo tratado com miricetina 1000nM apresentou maior percentual (P<0,05) de células com peroxidação lipídica, quando comparado ao grupo controle. Em conclusão, a suplementação do diluidor de criopreservação de sêmen ovino com 10 e 100nM de miricetina afeta a cinética espermática sem provocar alterações na estrutura geral do gameta, enquanto 1000nM de miricetina provoca mudanças na cinética associadas à danos peroxidativos.
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Affiliation(s)
| | | | | | | | | | | | | | - A.M. Batista
- Universidade Federal Rural de Pernambuco, Brazil
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20
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Abstract
In this study, fresh and frozen-thawed semen of Nitra and Zobor rabbit breeds were evaluated for potential inter-breed or inter-male differences in sperm quality traits. Individual male semen from four rabbits of each breed were diluted (v:v; 1:1) in a freezing medium composed of a commercial diluent, 16% of dimethyl sulphoxide (DMSO), 4% of Ficoll 70 and 2% of sucrose and frozen in liquid nitrogen vapours before being plunged into liquid nitrogen. Different motility traits, viability and plasma membrane integrity of fresh and frozen-thawed semen were evaluated in vitro using computer-assisted sperm analysis and flow cytometry. To evaluate the sperm fertilization ability, artificial insemination of fresh and frozen-thawed sperm was performed. Our results showed the effect of breed (P ≤ 0.05) on frozen-thawed sperm viability and plasma membrane integrity. Moreover, individual variability in semen quality among the rabbits was revealed (0.31 to 0.71 among quality traits). Our results thereby confirmed that the cryopreservation procedure could not ensure comparable sperm post-thaw survival for different breeds or males. Nevertheless, correlations between numbers of fresh total motile and progressively moving sperm and several quality parameters measured post thawing were revealed. Therefore, we suggest that the objective assessment of fresh rabbit sperm motility may be an effective indicator of frozen-thawed semen quality. Consequently, regular semen assessment is required in order to preserve good-quality insemination doses from native breeds.
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21
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Souza HM, Arruda LC, Monteiro MM, Nery IH, Araújo Silva RA, Batista AM, Guerra MMP. The Effect of Canthaxanthin on the Quality of Frozen Ram Spermatozoa. Biopreserv Biobank 2017; 15:220-227. [DOI: 10.1089/bio.2016.0049] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Helder M. Souza
- Andrology Laboratory (ANDROLAB), Veterinary Medicine Department, Universidade Federal Rural de Pernambuco (UFRPE), Recife, Brazil
| | - Lúcia C.P. Arruda
- Andrology Laboratory (ANDROLAB), Veterinary Medicine Department, Universidade Federal Rural de Pernambuco (UFRPE), Recife, Brazil
| | - Millena M. Monteiro
- Andrology Laboratory (ANDROLAB), Veterinary Medicine Department, Universidade Federal Rural de Pernambuco (UFRPE), Recife, Brazil
| | - Igor H.A.V. Nery
- Andrology Laboratory (ANDROLAB), Veterinary Medicine Department, Universidade Federal Rural de Pernambuco (UFRPE), Recife, Brazil
| | - Robespierre A.J. Araújo Silva
- Andrology Laboratory (ANDROLAB), Veterinary Medicine Department, Universidade Federal Rural de Pernambuco (UFRPE), Recife, Brazil
| | - André M. Batista
- Andrology Laboratory (ANDROLAB), Veterinary Medicine Department, Universidade Federal Rural de Pernambuco (UFRPE), Recife, Brazil
| | - Maria Madalena Pessoa Guerra
- Andrology Laboratory (ANDROLAB), Veterinary Medicine Department, Universidade Federal Rural de Pernambuco (UFRPE), Recife, Brazil
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22
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Del Olmo E, Bisbal A, García-Álvarez O, Maroto-Morales A, Ramón M, Jiménez-Rabadán P, Anel-López L, Soler AJ, Garde JJ, Fernández-Santos MR. Free-radical production after post-thaw incubation of ram spermatozoa is related to decreased in vivo fertility. Reprod Fertil Dev 2017; 27:1187-96. [PMID: 25485567 DOI: 10.1071/rd14043] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Accepted: 04/27/2014] [Indexed: 12/19/2022] Open
Abstract
The aim of the present study was to evaluate the effect of sperm reactive oxygen species (ROS) production and DNA changes on male fertility. For that purpose, six rams with significantly different pregnancy rates were used; these were classified as having high fertility, i.e. 59.4% average pregnancy rate, or low fertility, i.e. 23.1% average pregnancy rate. Sperm quality was assessed after a two-step process of sample thawing followed by an incubation of 2h, either in the freezing extender (37°C) or after dilution in synthetic oviductal fluid (SOF; 38°C, 5%CO2). Sperm viability (YO-PRO-1), ROS production (5-(and-6)-chloromethyl-2',7'-dichlorodihydrofluorescein acetyl ester (CM-H2DCFDA)) and undamaged chromatin (sperm chromatin structure assay, terminal deoxynucleotidyl transferase-mediated dUTP nick-end labelling, chromomycin A3) were evaluated by flow cytometry. Although no significant differences in sperm viability were observed, our results showed increased ROS production during incubation in the freezing extender as well as in SOF medium. Comparison between fertility groups showed significant differences in ROS production after 2h of incubation for the two treatments. Regarding DNA integrity, our results showed no significant differences either between treatments and incubation times or fertility groups. Linear regression analysis showed that ROS production determined by CM-H2DCFDA was a good indicator parameter for in vivo male fertility of SOF-incubated samples, yielding a fair correlation between both parameters (r=-0.92). These results indicate that detection of ROS production by CM-H2DCFDA and flow cytometry after 2h of incubation in SOF could be a useful procedure for predicting fertility of ram spermatozoa.
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Affiliation(s)
- Enrique Del Olmo
- SaBio IREC (CSIC - UCLM - JCCM), Campus Universitario s.n. 02071 Albacete, Spain
| | - Alfonso Bisbal
- SaBio IREC (CSIC - UCLM - JCCM), Campus Universitario s.n. 02071 Albacete, Spain
| | - Olga García-Álvarez
- SaBio IREC (CSIC - UCLM - JCCM), Campus Universitario s.n. 02071 Albacete, Spain
| | | | - Manuel Ramón
- Regional Center of Animal Selection and Reproduction (CERSYRA) JCCM, 13300 Valdepeñas, Spain
| | - Pilar Jiménez-Rabadán
- Regional Center of Animal Selection and Reproduction (CERSYRA) JCCM, 13300 Valdepeñas, Spain
| | - Luis Anel-López
- SaBio IREC (CSIC - UCLM - JCCM), Campus Universitario s.n. 02071 Albacete, Spain
| | - Ana J Soler
- SaBio IREC (CSIC - UCLM - JCCM), Campus Universitario s.n. 02071 Albacete, Spain
| | - J Julián Garde
- SaBio IREC (CSIC - UCLM - JCCM), Campus Universitario s.n. 02071 Albacete, Spain
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Mehdipour M, Daghigh Kia H, Najafi A, Vaseghi Dodaran H, García-Álvarez O. Effect of green tea (Camellia sinensis) extract and pre-freezing equilibration time on the post-thawing quality of ram semen cryopreserved in a soybean lecithin-based extender. Cryobiology 2016; 73:297-303. [PMID: 28314435 DOI: 10.1016/j.cryobiol.2016.10.008] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 10/27/2016] [Accepted: 10/27/2016] [Indexed: 11/22/2022]
Abstract
The aim of this study was to determine the effect of Camellia sinensis extract as antioxidant supplement and pre-freezing equilibration times in a soybean lecithin extender for freezing ram semen. In this study, a total of 20 ejaculates were collected from four Ghezel rams and diluted with extenders (1.5% soybean lecithin, 7% glycerol) containing no supplements (control) and Camellia sinensis extract (5, 10, and 15 mg/L) and cryopreserved, immediately after thermal equilibrium was reached at 5 °C (0 h), or 4 h after equilibration. Sperm motility characteristics, membrane integrity, abnormal morphology, mitochondria activity, apoptotic status, MDA and antioxidant activities (GPx, SOD and total antioxidant capacity (TAC)) were evaluated following freeze-thawing. Camellia sinensis extract at level 10 mg/L led to the highest total and progressive motilities percentages, in comparison to other treatments (P < 0.05). Our results showed that Camellia sinensis extract at level of 5 and 10 mg/L led to higher plasma membrane integrity, mitochondria activity and Total antioxidant capacity (TAC) in comparison to the level of 15 mg/L and control group (P < 0.05). Camellia sinensis extract at 10 mg/L level produced the highest percentage of live spermatozoa and the lowest apoptotic spermatozoa in comparison to all treatments (P < 0.05). In addition, level of MDA formation significantly decreased at this concentration, 10 mg/L, compared to all treatments (P < 0.05). No differences (P > 0.05) were observed between equilibration times (0 h vs. 4 h) for sperm samples incubated with or without different concentrations of Camellia sinensis extract. In conclusion, addition of Camellia sinensis extract at level of 10 mg/L can improve post-thawing quality of ram semen cryopreserved in a soybean lecithin extender. However, further research is needed to standardize the process of Camellia sinensis extraction and specially for identifying which compounds are responsible of its beneficial effect on ram sperm cryopreservation.
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Affiliation(s)
- Mahdieh Mehdipour
- Department of Animal Science, College of Agriculture, University of Tabriz, Tabriz, Iran
| | - Hossein Daghigh Kia
- Department of Animal Science, College of Agriculture, University of Tabriz, Tabriz, Iran.
| | - Abouzar Najafi
- Department of Animal Science, College of Agriculture, University of Tabriz, Tabriz, Iran
| | | | - Olga García-Álvarez
- Biomedical Center, Medical Faculty in Pilsen, Charles University in Prague, Alej, Svobody 1655/76, 323 00 Pilsen, Czechia
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López-Urueña E, Alvarez M, Gomes-Alves S, Anel-López L, Martínez-Rodríguez C, Manrique P, Borragan S, Anel L, de Paz P. Optimization of conditions for long-term prefreezing storage of brown bear sperm before cryopreservation. Theriogenology 2015; 84:1161-71. [DOI: 10.1016/j.theriogenology.2015.06.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Revised: 06/23/2015] [Accepted: 06/23/2015] [Indexed: 10/23/2022]
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Sperm flagellum volume determines freezability in red deer spermatozoa. PLoS One 2014; 9:e112382. [PMID: 25380133 PMCID: PMC4224448 DOI: 10.1371/journal.pone.0112382] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Accepted: 10/07/2014] [Indexed: 11/19/2022] Open
Abstract
The factors affecting the inter-individual differences in sperm freezability is a major line of research in spermatology. Poor sperm freezability is mainly characterised by a low sperm velocity, which in turn is associated with low fertility rates in most animal species. Studies concerning the implications of sperm morphometry on freezability are quite limited, and most of them are based on sperm head size regardless of the structural parts of the flagellum, which provides sperm motility. Here, for the first time, we determined the volumes of the flagellum structures in fresh epididymal red deer spermatozoa using a stereological method under phase contrast microscopy. Sperm samples from thirty-three stags were frozen and classified as good freezers (GF) or bad freezers (BF) at two hours post-thawing using three sperm kinetic parameters which are strongly correlated with fertility in this species. Fourteen stags were clearly identified as GF, whereas nineteen were BF. No significant difference in sperm head size between the two groups was found. On the contrary, the GF exhibited a lower principal piece volume than the BF (6.13 µm3 vs 6.61 µm3, respectively, p = 0.006). The volume of the flagellum structures showed a strong negative relationship with post-thawing sperm velocity. For instance, the volume of the sperm principal piece was negatively correlated with sperm velocity at two hours post-thawing (r = −0.60; p<0.001). Our results clearly show that a higher volume of the sperm principal piece results in poor freezability, and highlights the key role of flagellum size in sperm cryopreservation success.
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Abstract
SummaryThe aim of this study was to evaluate the effect of the addition of Ficoll 70 into the cryopreservation medium containing sucrose and dimethyl sulfoxide (DMSO) on rabbit spermatozoa characteristics following freezing/thawing. This large molecular weight polymer elevates the viscosity of medium and, therefore, could better protect spermatozoa during the freezing process. Only ejaculates of good initial motility (>80%) were used in the experiments. Heterospermic pools were diluted in a freezing medium composed of commercial diluent, 16% dimethyl sulphoxide (DMSO) and 2% sucrose (control) or in the same medium enriched with 4% Ficoll 70 (Ficoll) and frozen in liquid nitrogen vapours for 10 min before being plunged in liquid nitrogen. The quality of fresh and frozen/thawed spermatozoa samples was evaluated in vitro using the Computer Assisted Semen Analysis (CASA) system, fluorescent probes (peanut agglutinin (PNA)-Alexa Fluor®; annexin V-FLOUS) and by electron microscopy. Better cryoprotective effect was observed when Ficoll 70 was added, compared with the semen cryopreserved with sucrose and DMSO only. The higher values (P < 0.05) of motile and progressively moving spermatozoa immediately after thawing and at 30 min following incubation at 37°C were obtained in the Ficoll group. Moreover, the higher number (P < 0.05) of acrosome intact sperm was found in the Ficoll compared with the control group. Furthermore, no significant differences in kindling rates and number of pups born between frozen/thawed and fresh semen group were found. In conclusion, our study showed that the addition of Ficoll 70 might improve several characteristics of rabbit spermatozoa measured in vitro following freezing/thawing.
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Soler C, García A, Contell J, Segervall J, Sancho M. Kinematics and Subpopulations’ Structure Definition of Blue Fox (Alopex lagopus
) Sperm Motility using the ISAS®
V1 CASA System. Reprod Domest Anim 2014; 49:560-567. [DOI: 10.1111/rda.12310] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Accepted: 03/04/2014] [Indexed: 11/30/2022]
Affiliation(s)
- C Soler
- Departament de Biologia Funcional i Antropologia Física; Universitat de València; Burjassot Spain
| | - A García
- PROISER R+D; S.L. Paterna Valencia Spain
| | - J Contell
- Departament de Biologia Funcional i Antropologia Física; Universitat de València; Burjassot Spain
| | - J Segervall
- Finnish Fur Breeders Association; ProFur; Vaasa Finland
| | - M Sancho
- PROISER R+D; S.L. Paterna Valencia Spain
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