A Comparative Study on Water Column and Bottom Feeding Habit of Tank Reared Brook Trout (Salvelinus fontinalis)

Article Details

A Comparative Study on Water Column and Bottom Feeding Habit of Tank Reared Brook Trout (Salvelinus fontinalis)

Publisher:

Türk Deniz Araştırmaları Vakfı

Journal:

Journal of Black Sea / Mediterranean Environment 2002 Vol.8 Issue 1

Document Type:

Article

Publication Date:

3/2002

Document Language:

English

Document ID (Org No.):

2000832931

Frequency:

Tri-annual

pISSN:

1304-9550

Abstract:

 

Abstract       Feed consumption, growth rate and feed conversion were compared for brook trout (Salvelinus fontinalis) feeding in the water column or at the tank bottom. The trial that lasted 120 days was conducted in four 300 l fiberglass tanks with two replicates; of 25 fish (mean weight of 45.9 g) in each feeding treatment. Fish fed in the water column exhibited a mean (SD) specific growth rate (SGR) of 0.93 and reached a final mean weight of 138.9 (28.5) g whereas bottom fed fish had a mean SGR of 0.91 and 135.7 (39.2) g body weight. Overall feed conversion ratios (FCR) and condition factors (CF) were assessed as 1.73, 1.22 for the water column and 1.71, 1.25 bottom fed fish. None of these variables showed statistically significant differences between the treatments. Thus, it seems that brook trout may feed both in water column and at bottom in tank culture conditions and this habit could be utilised for reducing feed waste in intensive commercial trout culture.

Article Details

A Comparative Study on Water Column and Bottom Feeding Habit of Tank Reared Brook Trout (Salvelinus fontinalis)

Publisher: Türk Deniz Araştırmaları Vakfı

Journal: Journal of Black Sea / Mediterranean Environment 2002 Vol.8 Issue 1

Document Type: Article

Publication Date: 3/2002

Document Language: English

Document ID (Org No.): 2000832931

Frequency: Tri-annual

pISSN: 1304-9550

Issues

Publisher:

Türk Deniz Araştırmaları Vakfı

Journal:

Journal of Black Sea / Mediterranean Environment 2002 Vol.8 Issue 1

Document Type:

Article

Publication Date:

3/2002

Document Language:

English

Document ID (Org No.):

2000832931

Frequency:

Tri-annual

pISSN:

1304-9550