{"refrec":{"BRefID":115974,"RR":"Ahmed, I. (2007). Dietary amino acid L-threonine requirement of fingerling Indian catfish, Heteropneustes fossilis (Bloch) estimated by growth and biochemical parameters. Aquacult. Int. 15(5): 337-350. https://dx.doi.org/10.1007/s10499-007-9097-y","BEntID":110345,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". Aquacult. Int. 15(5): 337-350. https://dx.doi.org/10.1007/s10499-007-9097-y","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":1,"BrackishFlag":1,"TerrestrialFlag":0,"Authorstring":"Ahmed, I.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Ahmed, I.","Englishabstract":"An eight-week feeding experiment was conducted to quantify the dietary threonine requirement of young catfish, Heteropneustes fossilis (9.20 ± 0.85 cm, 3.60 ± 0.45 g) using isonitrogenous and isoenergetic diets [40% crude protein (CP); 4.28 kcal g/100 g, gross energy (GE)] containing casein, gelatin and L-crystalline amino acids. Six dietary treatments supplemented with graded levels of L-threonine (0.50, 0.75, 1.00, 1.25, 1.50 and 1.75 g per 100 g, dry diet), in gradations of 0.25 g per 100 g dry diet were formulated. Fish were randomly stocked, in triplicate groups, in 55-l indoor polyvinyl flow-through circular tanks and fed experimental diets at 4% of their body weight divided over two equal feedings at 08:00 and 16:00 hours. Feeding schedule and ration size were worked out prior to the start of the feeding trial. Live weight gain (263%), feed conversion ratio (FCR) (1.35) and protein efficiency ratio (PER) (1.85) were significantly higher (P < 0.05) in fish fed a diet containing 1.25% dietary threonine. However, second-degree polynomial regression analysis of live weight gain, FCR, PER and body protein deposition data indicated the dietary threonine requirement to be 1.37, 1.26, 1.23 and 1.24 g per 100 g of dry diet, respectively. Whole-body moisture decreased significantly (P < 0.05) with the increase of dietary concentration up to 1.25%. A significantly (P < 0.05) higher protein content was evident in fish fed a diet containing 1.25% threonine. Body fat increased significantly (P < 0.05) with the increase of dietary concentration and was found to be highest at a 1.75% threonine concentration. A significantly (P < 0.05) higher ash content was reported at the 0.50 and 0.75% threonine levels. Body protein deposition was also found to be significantly (P < 0.05) higher at the 1.25% threonine level, followed by the 1.50% threonine level. Based on these results, it is recommended that the diet for fingerling H. fossilis should contain threonine at a level of 1.27 g per 100 g of dry diet, corresponding to 3.17 g per 100 g of dietary protein for optimum growth and efficient feed utilization. No mortality was observed during the experiment. ","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Dietary amino acid L-threonine requirement of fingerling Indian catfish, Heteropneustes fossilis (Bloch) estimated by growth and biochemical parameters","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-06-16 01:32:03.556596","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"amino acid threonine requirement; H. fossilis; growth; body composition","OtherDescriptors":null,"Notes":null,"AnaPub":2007,"MonPub":null,"DateUpdate":"2020-10-23","DateCreate":"2007-10-25","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000249117600001","VABBcode":null,"OpenAcc":0,"DOI":"10.1007/s10499-007-9097-y"},"refs":null,"anarec":{"AnaID":115974,"PubliDate":2007,"Pagination":"337-350","XtraPublOfAnaID":null,"ISBN":null,"Volume":"15","Issue":"5","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":44242,"SerRR":"Aquaculture International. Springer: London. ISSN 0967-6120; e-ISSN 1573-143X","StandardTitleSer":"Aquaculture International","ISSN":"0967-6120","AbbrevSer":"Aquacult. Int.","StandardTitleMon":null,"StartPage":337,"Pages":14,"ToPubliDate":null,"BRefBibLvlCode":"S","SerNotes":null},"monrec":null,"serrec":null,"relations":null,"relationsRev":null,"addrec":null,"othpubs":null,"ownerships":null,"authors":[{"AutName":"Ahmed","Firstname":"Imtiaz","Initials":"I.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":110345,"AutID":42147,"OrderNr":1,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null}],"mapdetails":null,"datasets":null,"monographs":null,"monparts":null,"serparts":null,"BEntOpen":null,"BEntPrivate":null,"availability":[{"BInstID":353383,"LibID":36,"BRefID":115974,"EmbargoDate":null,"FullEmbargoDate":null,"PhysMedID":16,"hasOCRd":null,"ShelfLocCode":"353383","RFID":null,"PaidValue":null,"Medium":"Server","Description":"Interne VLIZ documenten","Acronym":"VLIZ","Library":"Vlaams Instituut voor de Zee","DutchTerm":"Non-open access","URL":null,"ClassifID":228,"Classification":"Non-open access","ReqLink":1,"ClassifTypID":3,"URLLocation":"https://www.vliz.be/imisdocs/publications/","SubDir":1,"InternalReq":1,"LoggedInReq":1,"Disclaimer":"Disclaimer_VLIZ_Intern","DutchDisclaimer":"
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