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He M, Sun L, Xu J, Wu C, Zhang S, Gao J, Zhang D, Gan Y, Bian Y, Wei J, Zhang W, Zhang W, Han X, Dai J. Evaluation of Dry Ice for Short-Term Storage and Transportation of Frozen Boar Semen. Animals (Basel) 2024; 14:1422. [PMID: 38791640 PMCID: PMC11117202 DOI: 10.3390/ani14101422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 05/07/2024] [Accepted: 05/08/2024] [Indexed: 05/26/2024] Open
Abstract
To address the safety problems posed by the transportation of boar semen using LN, this study was conducted on the short-term storage of frozen boar semen in dry ice (-79 °C). Boar semen frozen in LN was transferred to dry ice, kept for 1 day, 3 days, 5 days, 7 days, or 8 days, and then moved back to LN. The quality of frozen semen stored in LN or dry ice was determined to evaluate the feasibility of short-distance transportation with dry ice. The results showed that 60 °C for 8 s was the best condition for thawing frozen semen stored in dry ice. No significant differences in spermatozoa motility, plasma membrane integrity, or acrosome integrity were observed in semen after short-term storage in dry ice compared to LN (p > 0.05). There were no significant changes in antioxidant properties between storage groups either (p > 0.05). In conclusion, dry ice could be used as a cold source for the short-term transportation of frozen boar semen for at least 7 days, without affecting sperm motility, morphological integrity, or antioxidant indices.
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Affiliation(s)
- Mengqian He
- Shanghai Municipal Key Laboratory of Agri-Genetics and Breeding, Institute of Animal Husbandry and Veterinary Science, Shanghai Academy of Agricultural Sciences, Shanghai 201106, China; (L.S.); (J.X.); (C.W.); (S.Z.); (J.G.); (D.Z.)
- Key Laboratory of Livestock and Poultry Resources (Pig) Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Shanghai 201106, China
- Shanghai Engineering Research Center of Breeding Pig, Shanghai 201106, China;
| | - Lingwei Sun
- Shanghai Municipal Key Laboratory of Agri-Genetics and Breeding, Institute of Animal Husbandry and Veterinary Science, Shanghai Academy of Agricultural Sciences, Shanghai 201106, China; (L.S.); (J.X.); (C.W.); (S.Z.); (J.G.); (D.Z.)
- Key Laboratory of Livestock and Poultry Resources (Pig) Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Shanghai 201106, China
- Shanghai Engineering Research Center of Breeding Pig, Shanghai 201106, China;
| | - Jiehuan Xu
- Shanghai Municipal Key Laboratory of Agri-Genetics and Breeding, Institute of Animal Husbandry and Veterinary Science, Shanghai Academy of Agricultural Sciences, Shanghai 201106, China; (L.S.); (J.X.); (C.W.); (S.Z.); (J.G.); (D.Z.)
- Key Laboratory of Livestock and Poultry Resources (Pig) Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Shanghai 201106, China
- Shanghai Engineering Research Center of Breeding Pig, Shanghai 201106, China;
| | - Caifeng Wu
- Shanghai Municipal Key Laboratory of Agri-Genetics and Breeding, Institute of Animal Husbandry and Veterinary Science, Shanghai Academy of Agricultural Sciences, Shanghai 201106, China; (L.S.); (J.X.); (C.W.); (S.Z.); (J.G.); (D.Z.)
- Key Laboratory of Livestock and Poultry Resources (Pig) Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Shanghai 201106, China
- Shanghai Engineering Research Center of Breeding Pig, Shanghai 201106, China;
| | - Shushan Zhang
- Shanghai Municipal Key Laboratory of Agri-Genetics and Breeding, Institute of Animal Husbandry and Veterinary Science, Shanghai Academy of Agricultural Sciences, Shanghai 201106, China; (L.S.); (J.X.); (C.W.); (S.Z.); (J.G.); (D.Z.)
- Key Laboratory of Livestock and Poultry Resources (Pig) Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Shanghai 201106, China
- Shanghai Engineering Research Center of Breeding Pig, Shanghai 201106, China;
| | - Jun Gao
- Shanghai Municipal Key Laboratory of Agri-Genetics and Breeding, Institute of Animal Husbandry and Veterinary Science, Shanghai Academy of Agricultural Sciences, Shanghai 201106, China; (L.S.); (J.X.); (C.W.); (S.Z.); (J.G.); (D.Z.)
- Key Laboratory of Livestock and Poultry Resources (Pig) Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Shanghai 201106, China
| | - Defu Zhang
- Shanghai Municipal Key Laboratory of Agri-Genetics and Breeding, Institute of Animal Husbandry and Veterinary Science, Shanghai Academy of Agricultural Sciences, Shanghai 201106, China; (L.S.); (J.X.); (C.W.); (S.Z.); (J.G.); (D.Z.)
- Key Laboratory of Livestock and Poultry Resources (Pig) Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Shanghai 201106, China
- Shanghai Engineering Research Center of Breeding Pig, Shanghai 201106, China;
| | - Yeqing Gan
- Shanghai Jiading Municipal Centre for Disease Control and Prevention, Shanghai 201899, China; (Y.G.); (Y.B.); (J.W.)
| | - Yi Bian
- Shanghai Jiading Municipal Centre for Disease Control and Prevention, Shanghai 201899, China; (Y.G.); (Y.B.); (J.W.)
| | - Jinliang Wei
- Shanghai Jiading Municipal Centre for Disease Control and Prevention, Shanghai 201899, China; (Y.G.); (Y.B.); (J.W.)
| | - Weijian Zhang
- Shanghai Municipal Centre for Disease Control and Prevention, Shanghai 200051, China; (W.Z.); (W.Z.)
| | - Wengang Zhang
- Shanghai Municipal Centre for Disease Control and Prevention, Shanghai 200051, China; (W.Z.); (W.Z.)
| | - Xuejun Han
- Shanghai Engineering Research Center of Breeding Pig, Shanghai 201106, China;
| | - Jianjun Dai
- Shanghai Municipal Key Laboratory of Agri-Genetics and Breeding, Institute of Animal Husbandry and Veterinary Science, Shanghai Academy of Agricultural Sciences, Shanghai 201106, China; (L.S.); (J.X.); (C.W.); (S.Z.); (J.G.); (D.Z.)
- Key Laboratory of Livestock and Poultry Resources (Pig) Evaluation and Utilization, Ministry of Agriculture and Rural Affairs, Shanghai 201106, China
- Shanghai Engineering Research Center of Breeding Pig, Shanghai 201106, China;
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Uhlmannsiek L, Shen H, Eylers H, Martinsson G, Sieme H, Wolkers WF, Oldenhof H. Preserving frozen stallion sperm on dry ice using polymers that modulate ice crystalization kinetics. Cryobiology 2024; 114:104852. [PMID: 38295927 DOI: 10.1016/j.cryobiol.2024.104852] [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: 12/12/2023] [Revised: 01/19/2024] [Accepted: 01/19/2024] [Indexed: 02/08/2024]
Abstract
Cryopreserved semen is routinely shipped in liquid nitrogen. Dry ice could serve as an alternative coolant, however, frozen storage above liquid nitrogen temperatures (LN2, -196 °C) may negatively affect shelf-life and cryosurvival. In this study, we determined critical temperatures for storage of cryopreserved stallion sperm. We evaluated: (i) effects of cooling samples to different subzero temperatures (-10 °C to -80 °C) prior to storing in LN2, (ii) stability at different storage temperatures (i.e., in LN2, dry ice, -80 °C and -20 °C freezers, 5 °C refrigerator), and (iii) sperm cryosurvival during storage on dry ice (i.e., when kept below -70 °C and during warming). Furthermore, (iv) we analyzed if addition of synthetic polymers (PVP-40, Ficoll-70) modulates ice crystallization kinetics and improves stability of cryopreserved specimens. Sperm motility and membrane intactness were taken as measures of cryosurvival, and an artificial insemination trial was performed to confirm fertilizing capacity. We found that adding PVP-40 or Ficoll-70 to formulations containing glycerol reduced ice crystal sizes and growth during annealing. Post-thaw sperm viability data indicated that samples need to be cooled below -40 °C before they can be safely plunged and stored in LN2. No negative effects of relocating specimens from dry ice to LN2 and vice versa became apparent. However, sample warming above -50 °C during transport in dry ice should be avoided to ensure preservation of viability and fertility. Moreover, addition of PVP-40 or Ficoll-70 was found to increase sperm cryosurvival, especially under non-ideal storage conditions where ice recrystallization may occur.
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Affiliation(s)
- Laura Uhlmannsiek
- Unit for Reproductive Medicine - Clinic for Horses, University of Veterinary Medicine Hannover, Hannover, Germany; National Stud of Lower Saxony, Celle, Germany
| | - Hang Shen
- Biostabilization Laboratory - Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany
| | - Heinke Eylers
- Unit for Reproductive Medicine - Clinic for Horses, University of Veterinary Medicine Hannover, Hannover, Germany
| | | | - Harald Sieme
- Unit for Reproductive Medicine - Clinic for Horses, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Willem F Wolkers
- Unit for Reproductive Medicine - Clinic for Horses, University of Veterinary Medicine Hannover, Hannover, Germany; Biostabilization Laboratory - Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany
| | - Harriëtte Oldenhof
- Unit for Reproductive Medicine - Clinic for Horses, University of Veterinary Medicine Hannover, Hannover, Germany; Biostabilization Laboratory - Lower Saxony Centre for Biomedical Engineering, Implant Research and Development, Hannover, Germany.
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