caa a22 4500 477117449 CHVBK 20180405111626.0 cr unu---uuuuu 170330e19960401xx s 000 0 eng 10.1007/BF01875590 doi (NATIONALLICENCE)springer-10.1007/BF01875590 Dietary essential amino acids and heat increment in rainbow trout ( Oncorhynchus mykiss ) [Elektronische Daten] [T. Kaczanowski, F. Beamish] Oxygen consumption attributable to apparent heat increment (AHI) was measured in relation to varying essential amino acid proportions (EAA) infused into rainbow trout,Oncorhynchus mykiss (250-450 g), induced to swim at ≈1 BL s−1. Five diets, mimicking EAA concentrations in trout whole body protein, deficient in the branched chain amino acids (isoleucine, leucine and valine), containing unbalanced proportions of EAAs and supplying lysine in excessive and limiting proportions, were tested. Following infusion of the experimental diets, a significant increase in oxygen consumption was observed. Changes in plasma EAAs following infusion paralleled the time course of AHI (i.e., oxygen consumption). AHI represented the equivalent of 15-32% of the gross energy intake depending on dietary EAA composition. Diets supplying EAAs similar to trout whole body protein and limiting in lysine produced the lowest AHI values, indicating efficient utilization of dietary amino acids. Higher AHI values were associated with diets deficient in the branched chain amino acids and diets supplying lysine in excess. Duration of elevated metabolism was independent of both dietary composition and energy intake. Different proportions of EAAs in the diet can increase the energy expended as AHI. In an attempt to reduce the energy liberated as AHI, attention must be paid to the quality, quantity and balance of dietary EAAs. Kugler Publication bv Amsterdam, 1996 heat increment nationallicence essential amino acids nationallicence amino acid infusion nationallicence rainbow trout nationallicence Kaczanowski T. Department of Zoology, University of Guelph, N1G 2W1, Guelph, Ontario, Canada aut Beamish F. Department of Zoology, University of Guelph, N1G 2W1, Guelph, Ontario, Canada aut Fish Physiology and Biochemistry Kluwer Academic Publishers 15/2(1996-04-01), 105-120 0920-1742 15:2<105 1996 15 10695 https://doi.org/10.1007/BF01875590 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01875590 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kaczanowski T. Department of Zoology, University of Guelph, N1G 2W1, Guelph, Ontario, Canada aut NATIONALLICENCE 700 1- Beamish F. Department of Zoology, University of Guelph, N1G 2W1, Guelph, Ontario, Canada aut NATIONALLICENCE 773 0- Fish Physiology and Biochemistry Kluwer Academic Publishers 15/2(1996-04-01), 105-120 0920-1742 15:2<105 1996 15 10695 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer