{"title":"EFFECTS OF DIETARYASTAXANTHIN SUPPLEMENT ON GROWTH AND COLOR OF KOICARP (Cyprinus Carpio)","authors":"S. Lai, N. Chau","doi":"10.35382/18594816.1.33.2019.142","DOIUrl":null,"url":null,"abstract":"The study was conducted in order to find the astaxanthin content suitable for growth and color of Koi carp. The fish in the experiment with the length of 7.87 - 7.90cm and weight of 8.46–8.52g were set up in 4 treatments with 4 astaxanthin levels:0 mg (NT1), 55 mg (NT2), 65 mg (NT3), 75 mg /kg(NT4) food with 3 replicates. The results showed that environmental factors such as temperature, pH, N-NH3 and N-NO2 were within the suitable range for growth and color of Koi fish. Survival rate ranged from 46.67 to 66.67% (p> 0.05). Growth in length (15.26 - 15.55 cm) and weight (47.31 - 48.39 g) did not differ significantly between treatments (p> 0.05). Feed conversion ratio (FCR) between treatments was not different. The fish color index in NT3 was significantly higher than the others. Therefore, the content of 65 mg/ kg of food resulted in best color of Koi fish.","PeriodicalId":21692,"journal":{"name":"Scientific Journal of Tra Vinh University","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2019-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Scientific Journal of Tra Vinh University","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.35382/18594816.1.33.2019.142","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
The study was conducted in order to find the astaxanthin content suitable for growth and color of Koi carp. The fish in the experiment with the length of 7.87 - 7.90cm and weight of 8.46–8.52g were set up in 4 treatments with 4 astaxanthin levels:0 mg (NT1), 55 mg (NT2), 65 mg (NT3), 75 mg /kg(NT4) food with 3 replicates. The results showed that environmental factors such as temperature, pH, N-NH3 and N-NO2 were within the suitable range for growth and color of Koi fish. Survival rate ranged from 46.67 to 66.67% (p> 0.05). Growth in length (15.26 - 15.55 cm) and weight (47.31 - 48.39 g) did not differ significantly between treatments (p> 0.05). Feed conversion ratio (FCR) between treatments was not different. The fish color index in NT3 was significantly higher than the others. Therefore, the content of 65 mg/ kg of food resulted in best color of Koi fish.
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