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This experiment was conducted to compare the growth performance of silver barb fry produced from cryopreserved sperm with those produced from fresh sperm. Cryopreserved sperm used for fry production was preserved with three extenders, Alsever’s solution, urea egg-yolk, egg-yolk citrate solution and one cryoprotectant, DMSO. Cryodiluents were prepared by mixing the cryoprotectants at 10% concentration of the extender (% v/v). Fry produced with fresh sperm was considered as control. For comparing the growth, 60 fry of 15 day-old for each treatment of both cryopreserved and control groups were stocked to glass aquarium (50 cm x 30 cm x 28 cm) and reared them for ten weeks. Growth of fry in terms of length and weight increment in both cryopreserved and control groups were measured weekly. The growth pattern was more or less similar for all the treatments and there was no significant difference (P>0.05) between them. The survival rate of fry produced from cryopreserved sperm was 82.3% and that from fresh sperm 88%, and there was no significant difference (P>0.05) between two groups. It is therefore, concluded that the use of cryopreserved sperm does not impair survival and growth of fry.

Comparison of growth performance between cryopreserved and fresh sperm-originated fry of <i>Barbonymus gonionotus</i>