FN Archimer Export Format
PT J
TI Fat deposition and flesh quality in seawater reared, triploid brown trout (Salmo trutta) as affected by dietary fat levels and starvation
BT 
AF REGOST, Christelle
   ARZEL, Jacqueline
   CARDINAL, Mireille
   LAROCHE, M
   KAUSHIK, Sadasivam
AS 1:;2:;3:;4:;5:;
FF 1:PDG-DRV-RA-NP;2:PDG-DRV-RA-ARN;3:PDG-DRV-VP-GA;4:;5:;
C1 INRA, IFREMER, Unite Mixte, Fish Nutr Lab,Ctr Brest, F-29280 Plouzane, France.
   IFREMER, VP GA, F-44000 Nantes, France.
   INRA, LEIMA, F-44316 Nantes, France.
   INRA, IFREMER, Unite Mixte, Fish Nutr Lab, F-64310 St Pee Sur Nivelle, France.
C2 INRA, FRANCE
   IFREMER, FRANCE
   INRA, FRANCE
   INRA, FRANCE
SI BREST
   NANTES
   ST PEE SUR NIVELLE
SE PDG-DRV-RA-NP
   PDG-DRV-RA-ARN
   PDG-DRV-VP-GA
IN WOS Ifremer jusqu'en 2018
IF 1.536
TC 80
UR https://archimer.ifremer.fr/doc/2001/publication-377.pdf
LA English
DT Article
DE ;Texture;Colour;Sensory analyses;Starvation fat deposition;Dietary fat;Salmo trutta
AB Three isoproteic (crude protein content: 56%) diets with different fat levels (11%, 20%, and 26%) were fed to triplicate groups of triploid brown trout (initial average body weight of 1.5 kg), reared in seawater. At the end of 3 months of feeding, fish fed the high-fat (HF) diet were split into two groups: a triplicate group of fish received the low-fat diet and another triplicate group was kept unfed for a further 2-month period. Fish initially fed the low-fat diet during the first period were continued to be fed the same diet. Fish fed the medium-fat (MF) diet during period 1 were eliminated for period 2. At the end of each period, comparative whole body analyses, sensory and instrumental (texture and colour) analyses were made on fresh and smoked fillets. During the first period, increasing dietary fat level had no significant effect on growth or feed utilisation, but increased whole body (14.6% to 17.9%, on wet weight basis) and muscle (8.3% to 11.0%) fat content. During the second period, the fish fed the low-fat diet had similar growth performance irrespective of previous nutritional history, whereas starvation led to significant loss of weight and fillet yield. Whole body fat content did not differ between groups (around 15%) at the end of period 2. In fish initially fed the HF diet, both starvation and feeding a low-fat diet led to a reduction in muscle lipid content. Sensory analyses revealed few differences between treatments, in terms of visual colour aspects, for both cooked and smoked fillets at the end of period 1. A positive relationship between instrumental colour analyses (L*, a*, b* values) and dietary fat levels was observed, but no difference was observed for instrumental texture measurements. At the end of period 2, a significant increase in parameters of colour was observed in unfed fish. Although both feed withdrawal and feeding a low-fat diet 2 months before slaughtering led to a reduction in fat content, starvation had the disadvantage of leading to significant weight loss.
PY 2001
PD FEB
SO Aquaculture
SN 0044-8486
PU Elsevier
VL 193
IS 3-4
UT 000166576800011
BP 325
EP 345
DI 10.1016/S0044-8486(00)00498-1
ID 377
ER

EF