Reproductive performance of crossbreeding between local female and imported male koi at CV. Indokoi Malang
The high demand for koi fish must be supported by an adequate supply of fry, both in quantity and quality. High-quality fry comes from superior broodstock. This study aimed to evaluate the quantity, type, and quality of fry produced by crossbreeding local and imported broodstock. A descriptive quant...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2024-01-01
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| Series: | BIO Web of Conferences |
| Online Access: | https://www.bio-conferences.org/articles/bioconf/pdf/2024/62/bioconf_iconbeat2024_02005.pdf |
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| Summary: | The high demand for koi fish must be supported by an adequate supply of fry, both in quantity and quality. High-quality fry comes from superior broodstock. This study aimed to evaluate the quantity, type, and quality of fry produced by crossbreeding local and imported broodstock. A descriptive quantitative method was used, with natural spawning at a ratio of 1:3 (female), involving Shiro F1, local Shiro, local Showa, and imported Ginrin Shiro. Results showed a fecundity of 103,800 eggs, with fertilization, hatching, and survival rates of 84%, 93%, and 74.7%, respectively. The first selection yielded 79% high-quality fry, while the second selection produced 10% high-quality fry. Showa fry dominated the second selection, comprising 84% of that batch and 9.2% of the total fry, while Shiro fry made up 16% of the second selection and 1.7% of the overall fry. The highest daily growth rate occurred in the first week (4.6%/day), while the lowest was in the second week (2.08%/day). The highest specific growth rate was also in the first week (36.43%/day), with the lowest in the fourth week (5.61%/day). Water quality remained suitable for koi fry survival throughout the study. |
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| ISSN: | 2117-4458 |