• No results found

Supplementing a commercial diet for atlantic salmon (Salmo salar L.) with arginine, glutamate or tetradecylthioacetic acid (TTA). impact on production efficiency, slaughter parameters and flesh quality

N/A
N/A
Protected

Academic year: 2022

Share "Supplementing a commercial diet for atlantic salmon (Salmo salar L.) with arginine, glutamate or tetradecylthioacetic acid (TTA). impact on production efficiency, slaughter parameters and flesh quality"

Copied!
1
0
0

Laster.... (Se fulltekst nå)

Fulltekst

(1)

Time scale: 22 25 26 Hours after slaughter

A1 (Non-crowded)

A2 (Non-crowded)

Con B (crowded)

TTA B (crowded)

A2 (Non-crowded)

A1 (Non-crowded)

Arg B (crowded)

A2 (Non-crowded)

A1 (Non-crowded)

Glu

B (crowded) A2 (Non-crowded)

A1 (Non-crowded)

Production sampling: analysis of 10 fish from each net pen during each sampling from April to September.

Date (22, 25 and 26) of June is the time for shifting TTA diet to Control for net pen number 9, 6 and 1 respectively. Fish were fed with TTA diet until they reached 0.2% of body weight.

Pre-rigor fillets analysis: analysis of 6 fish (non-crowded) and 3 fish (crowded) from each net pen in the last sampling time (15-17th of September).

A1=measurements of muscle pH and collection of muscle samples from right fillets of non-crowded fish.

A2= measurements of fillet length, color and gaping from left fillets of non-crowded fish.

B= sampling of muscle pH and collection of muscles from right fillets and measurements of fillet length, color and gaping from left fillets of crowded fish.

Total biomass

Condition factor

Liver weight

Heart weight

Pigment

Fat content

* * * * * * * *

* * * * * *

* * * * *

* * * * * * * *

* * * * *

* * * * *

* * * * * *

* * * * *

* * * * * *

*

*

*

*

* *

* *

* * * * * * * *

* * * * * *

Net pens

1 3 6 9 12

Analyzed parameters in each production sampling

24 48 72

Fillet length (1, 3, 6, 9, 12, 24, 48 and 72 hours for Non-crowded fish and 1, 6, 12, 24 and 48 hours for crowded fish) Fillet color (1, 6, 12, 24 and 48 hours for Non- crowded fish and crowded fish)

Gaping (9 and 24 hours for Non-crowded fish and crowded fish) Muscle pH (1, 6, 12, 24, 48 and 72 for Non- crowded fish and 1, 12 and 48 for crowded fish) Muscle samples (1, 6, 12, 24, 48 and 72 for Non- crowded fish and 1, 12 and 48 for crowded fish)

Analyzed parameters of pre- rigor fillets

Diet

Sampling 1 26-27. May. 2009

Sampling 3 29. July. 2009

Sampling 4 15-17. Sep. 2009 Starting point of project (Sampling 0)

15. Apr.2009

Sampling 2 23-24. June. 2009

Referanser

RELATERTE DOKUMENTER

This report documents the results of the measurements of dust and gas made when firing different weapons with different ammunition at FFI in 2011 and 2012.. The measurements

Since there is no general formula that predicts the sensitivity accurately for the different classes of energetic materials it is more convenient to look for trends between the

Sorption of Cu, Sb and Pb (%) as a function a function of the total concentration of elements in the pond with charcoal and iron hydroxide as sorbents in two

A total number of 420 Atlantic salmon (Salmo salar L) (1+ spring smolt), with an average body weight of 2548 ± 2 g (mean ± standard error) were randomly distributed in three net

The cathepsin B, L and B+L activity of non-crowded fish showed no significant variations among the dietary treatments, but for crowded fish cathepsin B activity

Sensory assessment of (a) color (b) odor (c) tastiness (d) juiciness (e) firmness and (f) acceptability of cooked Atlantic salmon (Salmo salar L.) fillet between

Reduction of early sexual maturation in male S0 Atlantic salmon (Salmo salar L.) by dietary supplementation of tetradecylthioacetic acid (TTA).. and

Vitamins C andE interact in juvenile Atlantic salmon (Salmo salar, L.). AND HOLM J.C. Cage feeding of Atlantic mac- kerel: Effect on muscle lipid content, fatty acid