Abstract
Cryoprotectant is the crucial factor in the cryopreservation process. In general, there are two types of cryoprotectant, permeating and non-permeating cryoprotectants. Dimethyl sulfoxide (DMSO) and egg yolk are common permeating and non-permeating cryoprotectants respectively. Hence, the objective of the present study was to determine the best proportion of DMSO and egg yolk for the cryopreservation of Rasbora tawarensis sperm. A completely randomized experimental design was used in this study which involves two types of cryoprotectant and their combination at different concentrations, namely 5% DMSO, 5% egg yolk, 5% DMSO + 5% egg yolk and 2.5% DMSO + 2.5% egg yolk. Every treatment was conducted in three replicates. Combination of 5% DMSO + 5% egg yolk gave the best results cryoprotectant treatment had significant effects on sperm motility, fertilization and hatching rate of the R. tawarensis eggs (p <.05). It is concluded that the best proportion of cryoprotectants for sperm cryopreservation in this species is 5% DMSO + 5% egg yolk.
Original language | English |
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Pages (from-to) | 1700-1705 |
Number of pages | 6 |
Journal | Aquaculture Research |
Volume | 51 |
Issue number | 4 |
DOIs | |
Publication status | Published - 1 Apr 2020 |
Keywords
- artificial breeding
- endemic fish
- extracellular CPA
- permeating cryoprotectant