{"title":"半混凝土池塘饲养的andersonii Oreochromis (Castelnau, 1861)的大豆(甘氨酸Max)基饲料中有必要添加蛋氨酸吗?","authors":"Kefi As, Chungu Np, N. Mupenda, Mumba Cd","doi":"10.4172/2155-9910.1000154","DOIUrl":null,"url":null,"abstract":"An experiment was conducted to determine the optimal amount of methionine that can be incorporated in the soya bean based Oreochromis andersonii feeds. Three levels (2%, 4% and 6%) of methionine included in soya bean based feed (30% and 10% crude protein and crude lipid respectively) were tested on O. andersonii for seventy eight (78) days in hapas erected in a semi–concrete pond (250 m2) arranged in a complete randomized design. Specific growth rate (SGR% day -1 ), mean body weight gain (MBWG) (g) and apparent feed conversion efficiency (AFCE %) differed (P 0.05) SGR (%), MBWG (g) and AFCE (%) but higher than the control and the lowest methionine level used in the experiment. Trend analysis showed a linear relationship (F=3.358, P=0.02) between Gonadosomatic Index (GSI) and methionine level with the highest methionine level producing fish with the highest GSI. Furthermore, the highest methionine level produced a significantly higher (P 0.05) in all the treatments. It is, therefore, recommended that soya bean based feed can be fortified with 4% methionine to improve the O.andersonii growth. An economic analysis is required to ascertain the cost effectiveness of using the synthetic amino acid in soya bean fish feeds for O. andersonii.","PeriodicalId":331621,"journal":{"name":"Journal of Marine Science: Research & Development","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2014-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":"{\"title\":\"Is Fortification of Methionine Necessary in Soya Bean (Glycine Max) Based Feeds for Oreochromis andersonii (Castelnau, 1861) Raised in Semi - Concrete Ponds?\",\"authors\":\"Kefi As, Chungu Np, N. Mupenda, Mumba Cd\",\"doi\":\"10.4172/2155-9910.1000154\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"An experiment was conducted to determine the optimal amount of methionine that can be incorporated in the soya bean based Oreochromis andersonii feeds. Three levels (2%, 4% and 6%) of methionine included in soya bean based feed (30% and 10% crude protein and crude lipid respectively) were tested on O. andersonii for seventy eight (78) days in hapas erected in a semi–concrete pond (250 m2) arranged in a complete randomized design. Specific growth rate (SGR% day -1 ), mean body weight gain (MBWG) (g) and apparent feed conversion efficiency (AFCE %) differed (P 0.05) SGR (%), MBWG (g) and AFCE (%) but higher than the control and the lowest methionine level used in the experiment. Trend analysis showed a linear relationship (F=3.358, P=0.02) between Gonadosomatic Index (GSI) and methionine level with the highest methionine level producing fish with the highest GSI. Furthermore, the highest methionine level produced a significantly higher (P 0.05) in all the treatments. It is, therefore, recommended that soya bean based feed can be fortified with 4% methionine to improve the O.andersonii growth. An economic analysis is required to ascertain the cost effectiveness of using the synthetic amino acid in soya bean fish feeds for O. andersonii.\",\"PeriodicalId\":331621,\"journal\":{\"name\":\"Journal of Marine Science: Research & Development\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2014-09-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"5\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Marine Science: Research & Development\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.4172/2155-9910.1000154\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Marine Science: Research & Development","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4172/2155-9910.1000154","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 5
摘要
本试验旨在确定以大豆为原料的安氏Oreochromis andersonii饲料中蛋氨酸的最佳添加量。采用完全随机设计的半混凝土池(250 m2),在安氏沼虾上试验了大豆基饲料(粗蛋白质和粗脂肪分别为30%和10%)中蛋氨酸含量为2%、4%和6%的3个水平。特定生长率(SGR% day -1)、平均增重率(MBWG) (g)和饲料表观转化率(AFCE %)差异不显著(P 0.05),但均高于对照组和试验中最低蛋氨酸水平。趋势分析表明,促性腺指数(GSI)与蛋氨酸水平呈线性关系(F=3.358, P=0.02),促性腺指数(GSI)最高的鱼蛋氨酸水平最高。蛋氨酸最高水平在各处理的产量均显著高于对照组(p0.05)。因此,建议在大豆基饲料中添加4%的蛋氨酸,以促进andersoni的生长。需要进行经济分析,以确定在大豆鱼饲料中使用合成氨基酸对安德氏弧菌的成本效益。
Is Fortification of Methionine Necessary in Soya Bean (Glycine Max) Based Feeds for Oreochromis andersonii (Castelnau, 1861) Raised in Semi - Concrete Ponds?
An experiment was conducted to determine the optimal amount of methionine that can be incorporated in the soya bean based Oreochromis andersonii feeds. Three levels (2%, 4% and 6%) of methionine included in soya bean based feed (30% and 10% crude protein and crude lipid respectively) were tested on O. andersonii for seventy eight (78) days in hapas erected in a semi–concrete pond (250 m2) arranged in a complete randomized design. Specific growth rate (SGR% day -1 ), mean body weight gain (MBWG) (g) and apparent feed conversion efficiency (AFCE %) differed (P 0.05) SGR (%), MBWG (g) and AFCE (%) but higher than the control and the lowest methionine level used in the experiment. Trend analysis showed a linear relationship (F=3.358, P=0.02) between Gonadosomatic Index (GSI) and methionine level with the highest methionine level producing fish with the highest GSI. Furthermore, the highest methionine level produced a significantly higher (P 0.05) in all the treatments. It is, therefore, recommended that soya bean based feed can be fortified with 4% methionine to improve the O.andersonii growth. An economic analysis is required to ascertain the cost effectiveness of using the synthetic amino acid in soya bean fish feeds for O. andersonii.