The present study was aimed to evaluate the growth performance and subsequent survival rate of the rohu (Labeo rohita) and tilapia (Oreochromis niloticus). The experiment was conducted in th th six concrete tanks under an outdoor laboratory shed from 10 May to 29 July, 2019. There were three replications for each treatment and feed was supplied at the rate of 12%, 8%, and 4% of the st nd rd body weight of rohu and 20%, 15%, and 10% of the body weight of tilapia in 1 , 2 and 3 month for rohu (T ) and tilapia (T ) respectively to assess the comparative growth performance. The initial 1 2 weight of individual tilapia was 7.52±1.81 g and 14.75±0.19 g for T and T respectively. The final 1 2, mean weight of each fish was 44.01±5.65g for T and 139.94±1.29 g for T The weight gains of fish 1 2. were 36.49±4.09 g and 125.19±1.29 g for T and T respectively. The mean percent weight gain of 1 2, tilapia was higher in T (1715.05±0.00) than T (485.23±0.00). Feed conversion ratio (FCR) in T and 2 1 1 T were 2.86±0.14 and 2.23±0.18, respectively. Higher total production was obtained in T (1119.52 2 2 g) than T (278.19 g) with 100% survival in both the treatments. The water quality parameters for 1 both of the species were within the suitable range. The study reveals that growth performance was higher in T than T having 100% survival rate in the concrete tanks. 2 1
{"title":"IMPACT OF FLOATING FEED ON GROWTH PERFORMANCE, YIELD AND SURVIVAL OF ROHU (LABEO ROHITA) AND TILAPIA (OREOCHROMIS NILOTICUS) IN TANK BASED INTENSIVE AQUACULTURE SYSTEM","authors":"Md. Hashibur Rahman, M. Arifuzzaman","doi":"10.46505/ijbi.2021.3208","DOIUrl":"https://doi.org/10.46505/ijbi.2021.3208","url":null,"abstract":"The present study was aimed to evaluate the growth performance and subsequent survival rate of the rohu (Labeo rohita) and tilapia (Oreochromis niloticus). The experiment was conducted in th th six concrete tanks under an outdoor laboratory shed from 10 May to 29 July, 2019. There were three replications for each treatment and feed was supplied at the rate of 12%, 8%, and 4% of the st nd rd body weight of rohu and 20%, 15%, and 10% of the body weight of tilapia in 1 , 2 and 3 month for rohu (T ) and tilapia (T ) respectively to assess the comparative growth performance. The initial 1 2 weight of individual tilapia was 7.52±1.81 g and 14.75±0.19 g for T and T respectively. The final 1 2, mean weight of each fish was 44.01±5.65g for T and 139.94±1.29 g for T The weight gains of fish 1 2. were 36.49±4.09 g and 125.19±1.29 g for T and T respectively. The mean percent weight gain of 1 2, tilapia was higher in T (1715.05±0.00) than T (485.23±0.00). Feed conversion ratio (FCR) in T and 2 1 1 T were 2.86±0.14 and 2.23±0.18, respectively. Higher total production was obtained in T (1119.52 2 2 g) than T (278.19 g) with 100% survival in both the treatments. The water quality parameters for 1 both of the species were within the suitable range. The study reveals that growth performance was higher in T than T having 100% survival rate in the concrete tanks. 2 1","PeriodicalId":447945,"journal":{"name":"International Journal Biological Innovations","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126430236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
: The infestation of striped mealybug ( Ferrisia virgata ) is common in orchards causing large scale harms to fruit quality as well as quantity. A water-based insecticide was not proved effective to control the mealybugs due to the presence of waxy outer coating. 30 percent ethyl alcohol was added in order to make the herbal preparations effective. Clerodendron sp., Cymbopogon citratus , Pongamia pinnata and Azadirachta indica extracts were tested for management of Ferrisia virgata . A 25% concentration of Cymbopogon leaf extract was found as a most effective eco-friendly management tool and safe herbal pesticide having no harmful effect over the experimental plants as well as on other plants.
{"title":"ECO FRIENDLY MANAGEMENT OF HARMFUL COLONIZATION OF STRIPED MEALYBUG (FERRISIA VIRGATA) OVER PLANTS BY USING HERBAL PESTICIDE","authors":"Akanksha Tripathi","doi":"10.46505/IJBI.2021.3112","DOIUrl":"https://doi.org/10.46505/IJBI.2021.3112","url":null,"abstract":": The infestation of striped mealybug ( Ferrisia virgata ) is common in orchards causing large scale harms to fruit quality as well as quantity. A water-based insecticide was not proved effective to control the mealybugs due to the presence of waxy outer coating. 30 percent ethyl alcohol was added in order to make the herbal preparations effective. Clerodendron sp., Cymbopogon citratus , Pongamia pinnata and Azadirachta indica extracts were tested for management of Ferrisia virgata . A 25% concentration of Cymbopogon leaf extract was found as a most effective eco-friendly management tool and safe herbal pesticide having no harmful effect over the experimental plants as well as on other plants.","PeriodicalId":447945,"journal":{"name":"International Journal Biological Innovations","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121637254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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