Muscle amino acid profiles of eleven species of aquacultured animals and their potential value in feed formulation  

作　　者：Ewen McLean Kelly B.Alfrey Delbert M.Gatlin III T.Gibson Gaylord Frederick T.Barrows 

机构地区：[1]Aqua Cognoscenti LLC,479 Henslowe Lane,West Columbia,SC,29170,USA [2]Anthropocene Institute,855 El Camino Real,Ste 13A N399,Palo Alto,CA,94301,USA [3]Texas A&M University,Department of Ecology and Conservation Biology,College Station,TX,77843,USA [4]US Fish and Wildlife Service,Bozeman Fish Technology Center,4050 Bridger Canyon Road,Bozeman,MT,59715,USA [5]Aquatic Feed Technologies LLC,48 West Plaza del Lago,Islamorada,FL,33036,USA

出　　处：《Aquaculture and Fisheries》2024年第4期642-652,共11页渔业学报（英文）

摘　　要：The complete quantitative essential amino acid(EAA)requirements of aquacultured animals are largely unknown except for a handful of species.This is problematic because formulation of least-cost diets for target animals demands precise knowledge of EAA requirements.One way of approximating EAA requirements is to use correlations between whole-body and/or muscle EAA profiles using essential to total EAA ratios(A/E ratios).This method requires a reference,quantified EAA requirement,usually lysine(Lys).To systematically evaluate the A/E ratio method,muscle AA profiles were measured in 10 species of teleost and whiteleg shrimp.In fish,Lys represented the dominant muscle EAA measured,ranging between 7.06 and 9.58 g/100 g protein,whereas,in shrimp,arginine(Arg)was quantified as the principal EAA.For non-EAA,glutamate(Glu)and glutamine were consistently the NEAA recorded at highest levels whereas,in shrimp,Glu+Gln was highest followed by aspartate(Asp)plus asparagine(Asn).Except for Arg,which was twice that of fish(P<0.05),whiteleg shrimp expressed similar muscle A/E profiles.Strength of relationship between muscle EAA levels and known requirements were all strongly and positively correlated for non-salmonid species.When using Lys as the reference EAA there were few semblances between measured and estimated EAA requirements.

关 键 词：Aquafeed A/E ratio EAA requirement Ideal protein MUSCLE Fishmeal replacement 

分 类 号：S917[农业科学—水产科学]