Effects of replacing dietary shrimp meal and soybean meal with silkworm (Bombyx mori) pupae meal on growth performance of rainbow trout Oncorhynchus mykiss
{"title":"Effects of replacing dietary shrimp meal and soybean meal with silkworm (Bombyx mori) pupae meal on growth performance of rainbow trout Oncorhynchus mykiss","authors":"Ishori S. Mahato, Prem Timalsina, Krishna Paudel, Abhimanyu Shrestha, Churamani Bhusal, Prakash Kunwar","doi":"10.22271/fish.2023.v11.i6a.2874","DOIUrl":null,"url":null,"abstract":"Shrimp and soybean meal are important and expensive protein sources for rainbow trout ( Oncorhynchus mykiss ) in Nepal. During the 90-day trial, this study examined the effects of replacing shrimp meal (SM) and full-fat soybean meal (FFS) with varied levels of spent silkworm ( Bombyx mori ) pupae meal (SPM) on growth performance, feed conversion ratio, and survival. Four treatment groups were examined for the experiment: T 1 : 0% SPM, T 2 : 12.5% SPM, T 3 : 25% SPM, and T 4 : 37.5% SPM. Three replicates of 125 fish (2.5±0.2 g) were used for each treatment group. As SPM rose in the diet, final weight, weight gain, specific growth rates, and daily growth rates increased significantly ( p< 0.05). Experimental diets had no effects on condition factors, feed conversion ratios, and survival. In conclusion, SPM can replace SM and FFS up to 35.7% in rainbow trout diets without affecting growth and feed utilization.","PeriodicalId":14048,"journal":{"name":"International Journal of Fisheries and Aquatic Studies","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Fisheries and Aquatic Studies","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.22271/fish.2023.v11.i6a.2874","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Shrimp and soybean meal are important and expensive protein sources for rainbow trout ( Oncorhynchus mykiss ) in Nepal. During the 90-day trial, this study examined the effects of replacing shrimp meal (SM) and full-fat soybean meal (FFS) with varied levels of spent silkworm ( Bombyx mori ) pupae meal (SPM) on growth performance, feed conversion ratio, and survival. Four treatment groups were examined for the experiment: T 1 : 0% SPM, T 2 : 12.5% SPM, T 3 : 25% SPM, and T 4 : 37.5% SPM. Three replicates of 125 fish (2.5±0.2 g) were used for each treatment group. As SPM rose in the diet, final weight, weight gain, specific growth rates, and daily growth rates increased significantly ( p< 0.05). Experimental diets had no effects on condition factors, feed conversion ratios, and survival. In conclusion, SPM can replace SM and FFS up to 35.7% in rainbow trout diets without affecting growth and feed utilization.