{"title":"放养密度和投喂量对杂交鲶鱼形态和状态因子的影响","authors":"O. E. Afia, O. Obot, S. Umanah","doi":"10.3923/ajbs.2023.212.217","DOIUrl":null,"url":null,"abstract":"Background and Objective: Stocking densities and feeding levels have an impact on the production of farmed catfish. Morphometric parameters and condition factors are tools employed in aquaculture to assess the health of a species. Materials and Methods: Hence, the morphometric parameters and condition factors were investigated against different stocking densities and feeding levels. The fish were reared using tarpaulin tanks measuring 1 m 3 in 250 L of water with five different densities: 100 fish/0.25 m 3 (T1), 75 fish/0.25 m 3 (T2), 38 fish/0.25 m 3 (T3), 18 fish/0.25 m 3 (T4) and 9 fish/0.25 m 3 (T5). The experiment had three replicates and lasted for 52 weeks. Feeding was administered at 1.0% feeding level (FL) and 1.5% feeding level biomass with commercial feed. The obtained data were statistically analyzed using analysis of variance and means separation with Duncan’s Multiple Range Test. Results: Results from the statistical analysis revealed significant differences (p<0.05) in specific morphometric parameters among the different stocking densities, while others were insignificant. The hybrid catfish reared at T2 and 1.5% (FL) had the highest mean values for morphometric parameters. The T1 at 1.0% FL recorded the least morphometric values. The best condition factor (0.77) was obtained at T5. Conclusion: This study, therefore, suggested that 75 fish/m 3 stocking density is optimal for raising hybrid catfish and achieving the best growth.","PeriodicalId":8481,"journal":{"name":"Asian Journal of Biological Sciences","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Stocking Density and Feeding Levels Impacted on Morphometric and Condition Factors of Hybrid Catfish\",\"authors\":\"O. E. Afia, O. Obot, S. Umanah\",\"doi\":\"10.3923/ajbs.2023.212.217\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Background and Objective: Stocking densities and feeding levels have an impact on the production of farmed catfish. Morphometric parameters and condition factors are tools employed in aquaculture to assess the health of a species. Materials and Methods: Hence, the morphometric parameters and condition factors were investigated against different stocking densities and feeding levels. The fish were reared using tarpaulin tanks measuring 1 m 3 in 250 L of water with five different densities: 100 fish/0.25 m 3 (T1), 75 fish/0.25 m 3 (T2), 38 fish/0.25 m 3 (T3), 18 fish/0.25 m 3 (T4) and 9 fish/0.25 m 3 (T5). The experiment had three replicates and lasted for 52 weeks. Feeding was administered at 1.0% feeding level (FL) and 1.5% feeding level biomass with commercial feed. The obtained data were statistically analyzed using analysis of variance and means separation with Duncan’s Multiple Range Test. Results: Results from the statistical analysis revealed significant differences (p<0.05) in specific morphometric parameters among the different stocking densities, while others were insignificant. The hybrid catfish reared at T2 and 1.5% (FL) had the highest mean values for morphometric parameters. The T1 at 1.0% FL recorded the least morphometric values. The best condition factor (0.77) was obtained at T5. Conclusion: This study, therefore, suggested that 75 fish/m 3 stocking density is optimal for raising hybrid catfish and achieving the best growth.\",\"PeriodicalId\":8481,\"journal\":{\"name\":\"Asian Journal of Biological Sciences\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-09-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Asian Journal of Biological Sciences\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.3923/ajbs.2023.212.217\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Asian Journal of Biological Sciences","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3923/ajbs.2023.212.217","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Stocking Density and Feeding Levels Impacted on Morphometric and Condition Factors of Hybrid Catfish
Background and Objective: Stocking densities and feeding levels have an impact on the production of farmed catfish. Morphometric parameters and condition factors are tools employed in aquaculture to assess the health of a species. Materials and Methods: Hence, the morphometric parameters and condition factors were investigated against different stocking densities and feeding levels. The fish were reared using tarpaulin tanks measuring 1 m 3 in 250 L of water with five different densities: 100 fish/0.25 m 3 (T1), 75 fish/0.25 m 3 (T2), 38 fish/0.25 m 3 (T3), 18 fish/0.25 m 3 (T4) and 9 fish/0.25 m 3 (T5). The experiment had three replicates and lasted for 52 weeks. Feeding was administered at 1.0% feeding level (FL) and 1.5% feeding level biomass with commercial feed. The obtained data were statistically analyzed using analysis of variance and means separation with Duncan’s Multiple Range Test. Results: Results from the statistical analysis revealed significant differences (p<0.05) in specific morphometric parameters among the different stocking densities, while others were insignificant. The hybrid catfish reared at T2 and 1.5% (FL) had the highest mean values for morphometric parameters. The T1 at 1.0% FL recorded the least morphometric values. The best condition factor (0.77) was obtained at T5. Conclusion: This study, therefore, suggested that 75 fish/m 3 stocking density is optimal for raising hybrid catfish and achieving the best growth.