1. Determination of the optimum dietary essential amino acid profile for growing phase of Nile tilapia by deletion method
- Author
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Cleber Fernando Menegasso Mansano, João Batista Kochenborger Fernandes, Thiago Matias Torres do Nascimento, Nilva Kazue Sakomura, Helena Peres, Rafael de Souza Romaneli, Fábio H.F. Rodrigues, Kifayat Ullah Khan, Brazil University (Univ. Brasil), Universidade Estadual Paulista (Unesp), and Universidade do Porto
- Subjects
chemistry.chemical_classification ,0303 health sciences ,Methionine ,biology ,Oreochromis niloticus ,Tryptophan ,04 agricultural and veterinary sciences ,Aquatic Science ,biology.organism_classification ,03 medical and health sciences ,Nile tilapia ,Oreochromis ,chemistry.chemical_compound ,Nitrogen retention ,Animal science ,chemistry ,Ideal EAA profile ,Valine ,040102 fisheries ,0401 agriculture, forestry, and fisheries ,Leucine ,Isoleucine ,Amino acid nutrition ,Essential amino acid ,030304 developmental biology - Abstract
Made available in DSpace on 2020-12-12T01:59:03Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-06-30 The present study aimed to determine the optimal ratios of essential amino acids (EAAs) for Nile tilapia (Oreochromis niloticus) juveniles (150–200 g) using the deletion method. A total of 880 Nile tilapia juveniles (158.78 ± 0.9 g) were randomly distributed among 44 tanks (20 fish per tank/replicate) of 1500-L capacity each. During the 53 days feeding trial, fish were fed with the respective diets and daily feed intake was regularly recorded. In order to prevent any feed wastage, the fish were hand-fed three times a day until apparent satiation. A balanced diet (BD) and other ten diets were formulated by the deletion method, where the BD diet was adjusted to result in a reduction of 45% of each tested EAA. A group of fish at the beginning and at the end of the experiment was euthanized for the determination of the carcass nitrogen (N) composition. Based on the results of the present study, the optimal balance of essential amino acids for Nile tilapia juveniles weighing 150 and 200 g (g 16 g−1 N) was estimated as, arginine 4.88, lysine 5.87, threonine 6.02, histidine 1.73, isoleucine 3.26, leucine 4.82, methionine 2.36, phenylalanine 3.66, valine 3.46 and tryptophan 0.87. Brazil University (Univ. Brasil), Campus Fernandópolis, Est. Projetada F-1, s/n, Fazenda Santa Rita Aquaculture Center Faculty of Agricultural and Veterinary Science Universidade Estadual Paulista (UNESP), Via de Acesso Prof. Paulo Donato Castellane, s/n CIMAR/CIIMAR-Centro Interdisciplinar de Investigação Marinha e Ambiental Universidade do Porto, Rua dos Bragas 289 Faculty of Agricultural and Veterinary Sciences Universidade Estadual Paulista (UNESP), Via de Acesso Prof. Paulo Donato Castellane s/n Aquaculture Center Faculty of Agricultural and Veterinary Science Universidade Estadual Paulista (UNESP), Via de Acesso Prof. Paulo Donato Castellane, s/n Faculty of Agricultural and Veterinary Sciences Universidade Estadual Paulista (UNESP), Via de Acesso Prof. Paulo Donato Castellane s/n
- Published
- 2020
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