Comparison of nutrient components in muscle of wild and farmed groups of Myxocyprinus asiaticus

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1 41 6 Vol. 41 No. 6 Freshwater Fisheries Nov ± g ± g Myxocyprinus asiaticus P < P < EAAI AAS Val CS Met + Cys ΣSFA % % ΣMUFA % % ΣPUFA % % Myxocyprinus asiaticus S963 R A Comparison of nutrient components in muscle of wild and farmed groups of Myxocyprinus asiaticus LIN Yu-cong GONG Yuan GONG Shi-yuan YUAN Yong-chao YU Deng-hang LI Qiang College of Fisheries Huazhong Agricultural University Wuhan Abstract The nutrient components in muscles of wild and farmed groups of Myxocyprinus asiaticus were compared. The results showed that the moisture crude protein and crude ash contents in the muscle of the wild M. asiaticus were significantly higher than that of the farmed M. asiaticus P < while the flesh content and crude fat content in the muscle of wild M. asiaticus were significantly lower than that of farmed M. asiaticus P < The amino compositions of the two groups are in substantial agreement including 17 kinds of amino acids tryptophan was not measured. The essential amino acids index EAAI in the muscle of wild and farmed M. asiaticus was and respectively. According to AAS the first limited amino acid is Val while the CS standard was Met + Cys. The percentage of SFA MUFA and PUFA in the fatty acids of between the wild and the farmed stocks were % % % % % % respectively. It was clear that the amount of SFA in the muscle of wild M. asiaticus was significantly higher than that of the farmed M. asiaticus P < While the amount of MUFA in the muscle of wild M. asiaticus was significantly lower than that of the farmed M. asiaticus P < The amount of PUFA in the muscle of wild M. asiaticus showed no significant difference than that of the farmed M. asiaticus P > Key words Myxocyprinus asiaticus muscle nutritional components amino acids fatty acids Myxocyprinus asiaticus Cypriniformes Catostomidae Spinibarbus sinensis Tor Foliter brevifilis brevifilis Pelteoebagrus vach- Spinibarbus caldwelli Sem- elli 1 ilabeo notabili gsy@ mail. hzau. edu. cn linyucong123456@ 163. com

2 6 71 AAS = mg /g N /FAO / WHO mg /g N CS = mg /g N / n A B C H % dry AE BE CE HE % dry ± g ± 1. 6 cm 5 SPSS ± g ± 1. 3 cm Mean ± SD P < P < P Foss Trp N Val Lys Thr Phe Met Leu His 2 Ser Pro Tyr Cys L-8800 Ala Gly Glu Agilent Asp 8 NEAA 6890 Val Met 1. 3 P < FAO W TAA W EAA WHO 1973 % W NEAA W DAA dry 7 % dry 8 P < AAS Met CS EAAI 9 mg /g N EAAI = 100A /AE 100B /BE 100C /CE 100H /HE 1 /n mg /g N t- Independent samples t test Levene's test 2 Independent Samples Mean-Whitney U ± < Ile 7 EAA Arg

3 Tab. 1 1 ± Nutrient components in the muscles of the wild and the farmed groups of M. asiaticus Mean ± SD % P F P ± b ± a ± a ± b ± a ± b < ± b ± a < ± a ± b P > t- P < Mean-Whitney U P < Tab. 2 2 ± Amino acids composition and contents in muscle of wild and farmed groups of M. asiaticus Mean ± SD % P F P Val ± ± Thr ± a ± b Met ± ± Ile ± a ± b Leu ± a ± b < Phe ± a ± b Lys ± a ± b < W EAA ± a ± b < Ser ± a ± b Pro ± a ± b Arg ± a ± b Tyr ± a ± b < His ± a ± b Cys ± a ± b Ala * ± a ± b Gly * ± a ± b Glu * ± a ± b < Asp * ± a ± b W DAA ± a ± b < W NEAA ± a ± b < W TAA ± a ± b < W EAA /W TAA % W EAA / W NEAA % * 17 Glu % % W EAA /W TAA % Lys Asp Cys 0. 75% % 0. 52% W EAA /W TAA % % Glu Asp Gly Ala4 Glu Asp 2 Glu Gly Ala FAO WHO % %

4 6 73 AAS CS EAAI Met + Cys Val 3 3 AAS CS EAAI EAAI Lys AAS Val Thr CS 3 AAS CS EAAI Tab. 3 Comparative analysis of AAS CS and EAAI between wild and farmed groups of M. asiaticus mg /g FA0 Ile Leu Lys AAS Thr Val Trp Met + Cys Phe + Tyr Ile Leu Lys CS Thr Val Trp Met + Cys Phe + Tyr EAAI ΣSFA SFA % % % 13 ΣMUFA % MUFA 5 PUFA % ΣPUFA % % EPA SFA % MUFA P < DHA 9. 40% PUFA 6 C 14 0 C % P < P > Tab. 4 4 ± n = 5 Fatty acids content in muscle of wild and farmed groups of M. asiaticus Mean ± SD n = 5 P F P C ± ± C ± ± C ± ± < C ± ± < C ± ± < C ± C ± ΣSFA ± ± <

5 P F P C ± C ± ± < C ± ± < C 18 1w ± ± < C 20 1w ± ± < C 24 1w ± ± < ΣMUFA ± ± < C 18 2w ± ± < C ± ± < C 18 3w ± ± < C 18 3w ± ± < C 20 3w ± C 20 4w ± C 20 5w3 EPA ± ± < C 20 6w3 DHA ± ± < ΣPUFA ± ± EPA + DHA ± ± < ΣSFA ΣMUFA ΣPUFA EAAI % % Carassius aruatus 10 Oreochromis mossambicus 11 Pelteobagrus fulvidraco 12 Sinipevca Chuafai FAO /WHO Lys Takifugu fascintus 15 3 Acipenser schrenckii Monopterus albus Ictalurus punctatus 15 PUFA 18 EPA DHA 3. 2 FAO /WHO 20 EPA DHA 40% 19 EPA DHA 60% 16 Ctenopharyngodon idellus EPA DHA Lys

6 J J J J J J Lys 21. Lys J. 31 Lys sucker Myxocyprinus asiaticus J J J J J energy ratios on growth and body composition of juvenile Chinese J. J J J. 6. J Pellet P L Yong V R. M. Tokya Unit Nat Univ Nutritional evaluation of protein foods J J J J J Yuan Y C Gong S Y Yang H J Lin Y C Yu D H Luo Z. Apparent digestibility of selected feed ingredients for Chinese. Aquaculture 2010b 306 J Yuan Y C Gong S Y Luo Z et al. Effects of dietary protein to sucker Myxocyprinus asiaticus J. Aquacult nutr 2010a J J Wilson R P Halver J E. Protein and amino acid requirements of fishes J. Annu Rev of Nutr J. J

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