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Rodrigues JF, Dacampo LDL, Bicca DF, Lüdtke DS, Brum DDS, Cibin FWS. Effects of organic and inorganic selenium supplementation on frozen-thawed ram semen at two cooling periods. Vet Res Commun 2024; 48:1367-1377. [PMID: 38243140 DOI: 10.1007/s11259-024-10302-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Accepted: 01/09/2024] [Indexed: 01/21/2024]
Abstract
The aim of this study was to evaluate the effects of different selenium compounds on the sperm quality of cryopreserved ram semen. Ejaculates from four rams, collected using an artificial vagina heated to 38 °C, were individually evaluated. The approved ejaculates were pooled and diluted (1:1 v:v) in Tris-egg yolk extender (20%, v/v) and separated into two control groups, one cooled for 2 h and the other for 4 h. The pooled ejaculates at the two cooling periods were supplemented with two doses (0.5 and 1 μg/mL) of organic selenium (ORG), and inorganic selenium (SeNa), each. The samples were packed in 0.25 ml straws, at a concentration of 400 × 106 sperms/mL and stored in liquid nitrogen. The straws were thawed in a water bath at 37 °C for 20 s, and the samples were subjected to sperm kinetics evaluation by Computer Assisted Semen Analysis software. Sperm membrane integrity, acrosome morphology, and mitochondrial potential were assessed. In addition, oxidative stress markers reactive oxygen species (ROS), ferric reducing antioxidant power (FRAP), thiobarbituric acid reactive species (TBARS), and glutathione peroxidase (GPx) enzyme activity) were also evaluated. No significant improvement was observed in the ram semen quality at the two cooling times. Supplementation of the freezing extender with 0.5 μg/mL ORG, subjected to 4 h cooling period, increased the sperm motility when compared with the control group at the same cooling time. In addition, the 0.5 μg/mL SeNa group, under the 2 h cooling period, showed an increase in sperm motility when compared to the control group at the same cooling period. Considering the importance of sperm motility as a fertility parameter, our study indicates that supplementation with ORG and SeNa can help improve the total motility of the cryopreserved ram semen.
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Affiliation(s)
- Jéssica Ferreira Rodrigues
- Laboratório de Biotecnologia da Reprodução (Biotech), Universidade Federal do Pampa, Campus Uruguaiana, Uruguaiana, CEP 97500-970, RS, Brazil
- Laboratório de Estresse Oxidativo, Universidade Federal do Pampa (UNIPAMPA), Campus Uruguaiana, Uruguaiana, 97500-970, RS, Brazil
| | - Lucas Dalle Laste Dacampo
- Laboratório de Biotecnologia da Reprodução (Biotech), Universidade Federal do Pampa, Campus Uruguaiana, Uruguaiana, CEP 97500-970, RS, Brazil
| | - Diogo Ferreira Bicca
- Laboratório de Biotecnologia da Reprodução (Biotech), Universidade Federal do Pampa, Campus Uruguaiana, Uruguaiana, CEP 97500-970, RS, Brazil
- Laboratório de Estresse Oxidativo, Universidade Federal do Pampa (UNIPAMPA), Campus Uruguaiana, Uruguaiana, 97500-970, RS, Brazil
| | - Diogo Seibert Lüdtke
- Instituto de Química, Universidade Federal do Rio Grande do Sul (UFRGS), Avenida Bento Gonçalves 9500, Porto Alegre, 91501-970, RS, Brazil
| | - Daniela Dos Santos Brum
- Laboratório de Biotecnologia da Reprodução (Biotech), Universidade Federal do Pampa, Campus Uruguaiana, Uruguaiana, CEP 97500-970, RS, Brazil
| | - Francielli Weber Santos Cibin
- Laboratório de Biotecnologia da Reprodução (Biotech), Universidade Federal do Pampa, Campus Uruguaiana, Uruguaiana, CEP 97500-970, RS, Brazil.
- Laboratório de Estresse Oxidativo, Universidade Federal do Pampa (UNIPAMPA), Campus Uruguaiana, Uruguaiana, 97500-970, RS, Brazil.
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Málková A, Savvulidi FG, Ptáček M, Machová K, Janošíková M, Nagy S, Stádník L. Glycerol-Free Equilibration with the Addition of Glycerol Shortly before the Freezing Procedure: A Perspective Strategy for Cryopreservation of Wallachian Ram Sperm. Animals (Basel) 2023; 13:ani13071200. [PMID: 37048456 PMCID: PMC10093609 DOI: 10.3390/ani13071200] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/20/2023] [Accepted: 03/27/2023] [Indexed: 04/03/2023] Open
Abstract
This study investigated the effect of glycerol added in different phases of sperm equilibration on CASA and flow cytometry parameters of thawed ram spermatozoa. Sperm was collected from adult Wallachian rams. The freezing extender was glycerol-free ANDROMED® (Minitub GmbH, Tiefenbach, Germany) supplied by 6% exogenous glycerol at different stages of the cryopreservation process. The purpose of this study was to compare two strategies of glycerol addition for sperm cryopreservation. The first strategy included the use of a glycerol-free extender for the procedure of glycerol-free equilibration and chilling, with the glycerolation of the extender by 6% glycerol shortly before sperm slow freezing (GFA). The second strategy included the use of a freezing extender already glycerolated by 6% glycerol before the equilibration and chilling of sperm and following slow freezing (GA). Sperm samples were analyzed after equilibration (but before freezing) and after thawing (at T0, T1 h, and T2 h time points). iSperm® mCASA (Aidmics Biotechnology Co., LTD., Taipei, Taiwan) was used for the evaluation of sperm kinematics. Flow cytometry was used to measure sperm viability (plasma membrane/acrosome intactness) and mitochondrial membrane potential. The obtained results significantly demonstrated that the glycerol-free equilibration with the addition of glycerol shortly before freezing is a perspective strategy for cryopreservation of Wallachian ram sperm.
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Affiliation(s)
- Anežka Málková
- Department of Animal Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, 165 00 Prague, Czech Republic; (A.M.)
| | - Filipp Georgijevič Savvulidi
- Department of Animal Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, 165 00 Prague, Czech Republic; (A.M.)
- Correspondence: ; Tel.: +420-223-383-069
| | - Martin Ptáček
- Department of Animal Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, 165 00 Prague, Czech Republic; (A.M.)
| | - Karolína Machová
- Department of Genetics and Breeding, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, 165 00 Prague, Czech Republic
| | - Martina Janošíková
- Department of Animal Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, 165 00 Prague, Czech Republic; (A.M.)
| | - Szabolcs Nagy
- Institute of Animal Sciences, Hungarian University of Agriculture and Life Sciences, Georgikon Campus, H8360 Keszthely, Hungary
| | - Luděk Stádník
- Department of Animal Science, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Kamýcká 129, 165 00 Prague, Czech Republic; (A.M.)
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Vozaf J, Makarevich AV, Balazi A, Vasicek J, Svoradova A, Olexikova L, Chrenek P. Cryopreservation of ram semen: Manual versus programmable freezing and different lengths of equilibration. Anim Sci J 2021; 92:e13670. [PMID: 34951508 DOI: 10.1111/asj.13670] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 11/04/2021] [Accepted: 11/08/2021] [Indexed: 12/19/2022]
Abstract
The aim of our study was to examine effects of the length of semen equilibration as well as two freezing techniques on ram sperm post-thaw quality. The ejaculates of Wallachian sheep rams (n = 12) were collected by an electro-ejaculation, equilibrated in a Triladyl® (0, 2, 4, 6, and 8 h) containing glycerol and egg yolk and frozen by programmable freezing (PF) or manual freezing (MF). After thawing, sperm samples were subjected to the motility (computer-assisted sperm analysis [CASA]), viability (SYBR-14/PI), and fertilizing ability (FA) (in vitro penetration/fertilization test on bovine oocytes) assays. It was found that the equilibration of 6 h (E-6) ensured higher post-thaw sperm motility and progressive movement compared with other lengths tested, irrespective of a freezing technique. The E-6 sperm viability did not differ between PF and MF but was lower (P < 0.05) than control. Sperm FA (E-6) was similar in PF (60.44%) and MF (62%) but slightly lower than in fresh (72.8%). Our data demonstrate that the use of MF was comparable with PF, which can be applied in the field conditions without need in a piece of cost-expensive equipment, which can greatly benefit the gene bank of animal genetic resources.
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Affiliation(s)
- Jakub Vozaf
- Institute of Biotechnology, Faculty of Biotechnology and Food Science, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, Nitra, 949 76, Slovak Republic
| | - Alexander V Makarevich
- NPPC, Research Institute for Animal Production in Nitra, Hlohovecka 2, Lužianky, 951 41, Slovak Republic
| | - Andrej Balazi
- NPPC, Research Institute for Animal Production in Nitra, Hlohovecka 2, Lužianky, 951 41, Slovak Republic
| | - Jaromir Vasicek
- Institute of Biotechnology, Faculty of Biotechnology and Food Science, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, Nitra, 949 76, Slovak Republic.,NPPC, Research Institute for Animal Production in Nitra, Hlohovecka 2, Lužianky, 951 41, Slovak Republic
| | - Andrea Svoradova
- NPPC, Research Institute for Animal Production in Nitra, Hlohovecka 2, Lužianky, 951 41, Slovak Republic.,Department of Animal Morphology, Physiology and Genetics, Faculty of AgriSciences, Mendel University in Brno, Zemědělská 1/1665, Brno, 613 00, Czech Republic
| | - Lucia Olexikova
- NPPC, Research Institute for Animal Production in Nitra, Hlohovecka 2, Lužianky, 951 41, Slovak Republic
| | - Peter Chrenek
- Institute of Biotechnology, Faculty of Biotechnology and Food Science, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, Nitra, 949 76, Slovak Republic.,NPPC, Research Institute for Animal Production in Nitra, Hlohovecka 2, Lužianky, 951 41, Slovak Republic
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Purdy PH, Spiller SF, McGuire E, McGuire K, Koepke K, Lake S, Blackburn HD. Critical factors for non-surgical artificial insemination in sheep. Small Rumin Res 2020. [DOI: 10.1016/j.smallrumres.2020.106179] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Pre-freezing equilibration for 22 h improves post-thaw sperm functions in cryopreserved ram semen by reducing cholesterol efflux. Cryobiology 2020; 96:76-84. [PMID: 32777333 DOI: 10.1016/j.cryobiol.2020.07.013] [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: 05/13/2020] [Revised: 07/06/2020] [Accepted: 07/30/2020] [Indexed: 11/20/2022]
Abstract
Failure of cervical insemination with cryopreserved semen is hindering implementation of AI in sheep in field condition. Here the effect of equilibration time and catalase on post-thaw qualities of ram semen was investigated. Pooled semen was diluted (800 × 106 sperm mL-1) with a TES-Tris-fructose extender with 6% glycerol, 15% egg yolk and supplemented with 0, 50, 100 and 200 U mL-1 catalase and packaged into 0.25 mL straws. In experiment 1, straws were equilibrated at 5 °C either for 3 h in a cold cabinet (E3) or for 10 (E10) and 22 h (E22) inside a refrigerator. In experiment 2, all straws were equilibrated for 22 h inside refrigerator. Straws were frozen at -25 °C min-1 up to -125 °C using a cell freezer and finally plunged into liquid nitrogen. The post-thaw total and rapid motility were higher (P < 0.05) in E22 compared to E3 and E10. Sperm kinetics was comparable between E3 and E22, but lower in E10. Similarly, acrosome integrity, functional membrane integrity, percent high cholesterol (mCHO) and live-high mitochondrial membrane potential (MMP) were higher (P < 0.05) while live-high intracellular calcium and acrosome-reacted sperm were lower in E22 compared to E3 and E10. The percent rapid motile, high mCHO and live-high MMP were significantly (P < 0.05) lower in catalase-treated samples compared to the control, while the membrane integrity was comparable within the groups. In conclusion, pre-freezing equilibration for 22 h compared to 3 or 10 h resulted in higher post-thaw sperm functions while catalase had negative impact on cryopreservation of ram semen.
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Arnold DM, Gray C, Roth TL, Mitchell S, Graham LH. A simple, field-friendly technique for cryopreserving semen from Asian elephants (Elephas maximus). Anim Reprod Sci 2017; 182:84-94. [DOI: 10.1016/j.anireprosci.2017.05.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Revised: 05/11/2017] [Accepted: 05/14/2017] [Indexed: 11/25/2022]
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Salmon VM, Leclerc P, Bailey JL. Novel technical strategies to optimize cryopreservation of goat semen using cholesterol-loaded cyclodextrin. Cryobiology 2017; 74:19-24. [DOI: 10.1016/j.cryobiol.2016.12.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 12/11/2016] [Accepted: 12/28/2016] [Indexed: 10/20/2022]
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Ezz MA, Montasser AE, Hussein M, Eldesouky A, Badr M, Hegab AE, Balboula A, Zaabel SM. The effect of cholesterol loaded cyclodextrins on post-thawing quality of buffalo semen in relation to sperm DNA damage and ultrastructure. Reprod Biol 2016; 17:42-50. [PMID: 28041717 DOI: 10.1016/j.repbio.2016.12.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 12/01/2016] [Accepted: 12/03/2016] [Indexed: 11/16/2022]
Abstract
The cryopreservation of germ cells is a major tool for the propagation of animals with desired genetic traits. Although cryopreservation of spermatozoa in some animals is effective, its effectiveness is variable. For example, cryopreservation efficiency of buffalo bull spermatozoa remains very poor. In this study, we evaluated sperm DNA damage and ultrastructure in buffalo bull spermatozoa vitrified in the presence or absence of cholesterol-loaded cyclodextrins (CLC). Our results showed that cryopreserved buffalo spermatozoa had elevated levels of deteriorated plasma and mitochondrial membranes, which are the likely causes of DNA damage after vitrification. Accordingly, the levels of the activity of Alanine Aminotransferase (ALT), Alkaline phosphatase (ALP) and Aspartate Aminotransferase (AST) were also elevated following exposure of buffalo bull spermatozoa to a cycle of freezing-thawing. Importantly, supplementation of Tris-Egg Yolk-Glucose (TEYG) extender with (CLC) improved the quality of buffalo spermatozoa following cryopreservation. This protective effect of CLC is likely due to decreasing mitochondrial and plasma membrane deterioration with subsequent inhibition of DNA damage. These results suggest that cholesterol loss is the likely reason for poor semen quality in buffaloes following cryopreservation, and provide evidence that manipulating lipid content during cryopreservation is a promising strategy to improve the quality of buffalo semen.
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Affiliation(s)
- Mohamed Aboul Ezz
- Department of Theriogenology, Faculty of Veterinary Medicine, Mansoura University, 35516, Egypt
| | - Abd Elmonem Montasser
- Department of Theriogenology, Faculty of Veterinary Medicine, Mansoura University, 35516, Egypt
| | - Mamdouh Hussein
- Department of Theriogenology, Faculty of Veterinary Medicine, Mansoura University, 35516, Egypt
| | - Ashraf Eldesouky
- Department of Theriogenology, Faculty of Veterinary Medicine, Mansoura University, 35516, Egypt
| | - Magdy Badr
- Artificial Insemination and Embryo Transfer Department, Animal Reproduction Research Institute (ARRI), Al Haram, Giza, Egypt
| | - Abd Elraouf Hegab
- Department of Theriogenology, Faculty of Veterinary Medicine, Mansoura University, 35516, Egypt; Department of Biology, Faculty of Science, Taif University, Taif, Saudi Arabia
| | - Ahmed Balboula
- Department of Theriogenology, Faculty of Veterinary Medicine, Mansoura University, 35516, Egypt
| | - Samy M Zaabel
- Department of Theriogenology, Faculty of Veterinary Medicine, Mansoura University, 35516, Egypt.
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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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Salmon VM, Castonguay F, Demers-Caron V, Leclerc P, Bailey JL. Cholesterol-loaded cyclodextrin improves ram sperm cryoresistance in skim milk-extender. Anim Reprod Sci 2016; 177:1-11. [PMID: 28017451 DOI: 10.1016/j.anireprosci.2016.11.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 10/17/2016] [Accepted: 11/22/2016] [Indexed: 10/20/2022]
Abstract
Cholesterol-loaded cyclodextrin (CLC) is known to improve ram sperm cryosurvival. This study expands on previous research to: (1) determine the mechanism by which CLC improves ram sperm cryosurvival and (2) compare the efficiency of a novel, skim milk-based extender containing CLC to a traditional egg yolk-based extender. Hypothesis #1 was that CLC enhances membrane cholesterol content to increase the resistance of ram sperm to cold and osmotic stress, thereby improving cryosurvival. We first assessed the ability of fresh sperm treated with CLC to withstand cold shock. Second, fresh sperm were treated with CLC to evaluate their tolerance to osmotic stress. Third, to confirm that cholesterol is incorporated into the sperm using CLC, we quantified sperm cholesterol. To test Hypothesis #2 that CLC is most effective in a medium without competing cholesterol, we compared sperm cryosurvival and fertility in skim milk-based extender containing CLC versus in a traditional egg yolk-based freezing extender without CLC. Our data confirmed that CLC treatment improves ram sperm cold shock and osmotic stress resistance, and augments sperm cholesterol content. Semen in skim milk-based extender containing CLC prior to freezing, had more motile sperm with intact acrosomes after thawing compared to semen in egg yolk-based extender. In contrast, sperm plasma membrane integrity and in vivo fertility of the semen cryopreserved in the skim milk-based extender with CLC did not differ from semen that was cryopreserved in egg yolk-based extender. Further research is warranted to combine CLC with other cryoprotection strategies or to modify the insemination protocol.
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Affiliation(s)
- Vianney M Salmon
- Centre de Recherche en Reproduction, Développement et Santé Intergénérationnelle, Département des Sciences Animales, Université Laval, Québec, QC G1V 0A6, Canada
| | - François Castonguay
- Département des Sciences Animales, Université Laval, Québec, QC G1V 0A6, Canada
| | | | - Pierre Leclerc
- Département d'obstétrique, Gynécologie et Reproduction, Centre de Recherche en Reproduction, Développement et Santé Intergénérationnelle, Santé de la mère et de l'enfant, Centre de Recherche du CHU de Québec, QC G1V 4G2, Canada
| | - Janice L Bailey
- Centre de Recherche en Reproduction, Développement et Santé Intergénérationnelle, Département des Sciences Animales, Université Laval, Québec, QC G1V 0A6, Canada.
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Purdy PH, Wilson CS, Spiller SF, Blackburn HD. Biobanking genetic resources: challenges and implementation at the USDA National Animal Germplasm Program. Reprod Fertil Dev 2015; 28:RD15399. [PMID: 26678540 DOI: 10.1071/rd15399] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Accepted: 11/24/2015] [Indexed: 11/23/2022] Open
Abstract
There is adequate infrastructure in the US to identify and acquire germplasm from the major beef and dairy cattle and swine breeds. However, when we venture outside these species, the same tasks become more difficult because of a lack of breed associations, databases that include genotypic and phenotypic data and low numbers of animals. Furthermore, acquisition of germplasm from non-cattle and non-swine species can be difficult because these animals are often not located near the National Animal Germplasm Program, which makes collection and preservation of the samples in a timely manner that much more complicated. This problem is compounded because not all preservation protocols are optimised for field collection conditions or for all types of germplasm. Since 1999, the USDA National Animal Germplasm Program has worked to overcome these obstacles by developing policies, procedures and techniques in order to create a germplasm repository for all agricultural species (wild and domesticated) in the US. Herein, we describe these activities and illustrate them via a case study on how our efforts collecting Navajo-Churro sheep have created a secure backup of germplasm and how we specifically overcome these issues as they relate to rare and minor breeds of agricultural species.
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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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López-Urueña E, Alvarez M, Gomes-Alves S, Manrique P, Anel-López L, Chamorro CA, Borragan S, de Paz P, Anel L. Alternative procedures for the cryopreservation of brown bear ejaculates depending on the flexibility of the "in cooling" period (5°C). Cryobiology 2014; 69:434-41. [PMID: 25315224 DOI: 10.1016/j.cryobiol.2014.10.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Revised: 09/08/2014] [Accepted: 10/02/2014] [Indexed: 10/24/2022]
Abstract
The adaptability of cryopreservation protocols for brown bear spermatozoa collected under field conditions and frozen in a nearby laboratory (transported for a few hours) or shipped to a reference laboratory for sex sorting (transported for a few days) was evaluated. Forty-nine electroejaculates from 15 mature brown bears were extended to 100×10(6) sperm/mL in a TES-Tris-Fructose based extender and cryopreserved (-20°C/min to -100°C and stored at -196°C). After thawing, the quality of the seminal samples was assessed for total (TM), progressive (PM) motility and kinetic parameters - by CASA -, and viability (VIAB), viable and non-apoptotic status (YOPRO-), high membrane mitochondrial potential (MIT) and intact acrosomes (iACR) - by flow cytometry -. In Experiment 1, we assessed different storage times (0, 0.5, 1 - control -, 4-5, 7-8 and 11-12 h) at 5°C from final dilution to freezing. After thawing, non-equilibrated samples (0 h) showed lower values of iACR, TM and PM. No significant differences were found for the different periods of equilibration tested. In Experiment 2, we evaluated three long-term storage times (24, 48 and 72 h) at 5°C before freezing using storage for 1h as control. The post-thawing quality of brown bear spermatozoa declined markedly after 48-72 h of pre-freezing. In conclusion, our findings suggest the possibility of extending the pre-freezing cooling period up to 24h post-collection without freezing. This knowledge should enable the adaptation of the freezing protocols for when a special handling conditions are required such as the shipment of seminal samples to technological centers for the pre-freezing application of enhancer spermatic biotechnologies.
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Affiliation(s)
- E López-Urueña
- ITRA-ULE, INDEGSAL, University of León, 24071 León, Spain; Animal Reproduction and Obstetrics, University of León, 24071 León, Spain
| | - M Alvarez
- ITRA-ULE, INDEGSAL, University of León, 24071 León, Spain; Animal Reproduction and Obstetrics, University of León, 24071 León, Spain
| | - S Gomes-Alves
- ITRA-ULE, INDEGSAL, University of León, 24071 León, Spain; Animal Reproduction and Obstetrics, University of León, 24071 León, Spain
| | - P Manrique
- ITRA-ULE, INDEGSAL, University of León, 24071 León, Spain; Animal Reproduction and Obstetrics, University of León, 24071 León, Spain
| | - L Anel-López
- ITRA-ULE, INDEGSAL, University of León, 24071 León, Spain; SaBio IREC (CSIC-UCLM-JCCM), Campus Universitario s. n., 02071 Albacete, Spain
| | - C A Chamorro
- ITRA-ULE, INDEGSAL, University of León, 24071 León, Spain; Veterinary Anatomy, University of León, 24071 León, Spain
| | | | - P de Paz
- ITRA-ULE, INDEGSAL, University of León, 24071 León, Spain; Molecular Biology (Cell Biology), University of León, 24071 León, Spain.
| | - L Anel
- ITRA-ULE, INDEGSAL, University of León, 24071 León, Spain; Animal Reproduction and Obstetrics, University of León, 24071 León, Spain
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Prolonged post cooling but not pre-cooling equilibrium length improves the viability of ram sperm cryopreserved in an extender containing low-density lipoproteins. Small Rumin Res 2014. [DOI: 10.1016/j.smallrumres.2014.02.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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16
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Santos M, Sansinena M, Zaritzky N, Chirife J. Mathematical prediction of freezing times of bovine semen in straws placed in static vapor over liquid nitrogen. Cryobiology 2013; 66:30-7. [DOI: 10.1016/j.cryobiol.2012.10.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2012] [Revised: 09/26/2012] [Accepted: 10/01/2012] [Indexed: 11/26/2022]
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17
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Hussain S, Lessard C, Anzar M. A strategy for improvement of postthaw quality of bison sperm. Theriogenology 2013; 79:108-15. [DOI: 10.1016/j.theriogenology.2012.09.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Revised: 09/14/2012] [Accepted: 09/23/2012] [Indexed: 11/26/2022]
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18
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Morrier A, Bailey J. Pre-incubation prior to semen processing and the subsequent effect on the quality of fresh-cooled and cryopreserved ram semen. Small Rumin Res 2012. [DOI: 10.1016/j.smallrumres.2011.09.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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19
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Quantification of damage at different stages of cryopreservation of endangered North American bison (Bison bison) semen and the effects of extender and freeze rate on post-thaw sperm quality. Anim Reprod Sci 2011; 129:171-9. [DOI: 10.1016/j.anireprosci.2011.12.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2011] [Revised: 11/25/2011] [Accepted: 12/02/2011] [Indexed: 11/24/2022]
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20
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The effect of antioxidants on the quality of cryopreserved semen in two salmonid fish, the brook trout (Salvelinus fontinalis) and the rainbow trout (Oncorhynchus mykiss). Theriogenology 2011; 76:882-90. [DOI: 10.1016/j.theriogenology.2011.04.019] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2011] [Revised: 03/31/2011] [Accepted: 04/25/2011] [Indexed: 01/10/2023]
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21
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Câmara D, Silva S, Almeida F, Nunes J, Guerra M. Effects of antioxidants and duration of pre-freezing equilibration on frozen-thawed ram semen. Theriogenology 2011; 76:342-50. [DOI: 10.1016/j.theriogenology.2011.02.013] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2010] [Revised: 01/05/2011] [Accepted: 01/06/2011] [Indexed: 10/18/2022]
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22
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Anzar M, Kroetsch T, Boswall L. Cryopreservation of bull semen shipped overnight and its effect on post-thaw sperm motility, plasma membrane integrity, mitochondrial membrane potential and normal acrosomes. Anim Reprod Sci 2011; 126:23-31. [DOI: 10.1016/j.anireprosci.2011.04.018] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2010] [Revised: 04/17/2011] [Accepted: 04/26/2011] [Indexed: 10/18/2022]
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23
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Natural, but not lyophilized, low density lypoproteins were an acceptable alternative to egg yolk for cryopreservation of ram semen. Theriogenology 2011; 75:300-7. [DOI: 10.1016/j.theriogenology.2010.08.016] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2010] [Revised: 08/24/2010] [Accepted: 08/25/2010] [Indexed: 11/23/2022]
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Olivera-Muzante J, Fierro S, Gil J. Conception Rates in Ewes after AI with Ram Semen Preserved in Milk-Egg Yolk Extenders Supplemented with Glycerol. Reprod Domest Anim 2010; 46:508-12. [DOI: 10.1111/j.1439-0531.2010.01698.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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25
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Purdy PH, Mocé E, Stobart R, Murdoch WJ, Moss GE, Larson B, Ramsey S, Graham JK, Blackburn HD. The fertility of ram sperm held for 24h at 5°C prior to cryopreservation. Anim Reprod Sci 2010; 118:231-5. [DOI: 10.1016/j.anireprosci.2009.06.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2008] [Revised: 05/18/2009] [Accepted: 06/18/2009] [Indexed: 10/20/2022]
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Mocé E, Purdy PH, Graham JK. Treating ram sperm with cholesterol-loaded cyclodextrins improves cryosurvival. Anim Reprod Sci 2010; 118:236-47. [DOI: 10.1016/j.anireprosci.2009.06.013] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2008] [Revised: 05/18/2009] [Accepted: 06/18/2009] [Indexed: 11/16/2022]
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27
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Varisli O, Uguz C, Agca C, Agca Y. Motility and acrosomal integrity comparisons between electro-ejaculated and epididymal ram sperm after exposure to a range of anisosmotic solutions, cryoprotective agents and low temperatures. Anim Reprod Sci 2009; 110:256-68. [DOI: 10.1016/j.anireprosci.2008.01.012] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2007] [Revised: 01/04/2008] [Accepted: 01/14/2008] [Indexed: 11/28/2022]
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