Evaluation of Commercial Trout Feeds: Feed Consumption, Growth, Feed  Conversion, Carcass Composition and Bio-economic Analysis

İbrahim Okumuş *(1); Mehmet Derya Mazlum (2)

Makale detayları

Evaluation of Commercial Trout Feeds: Feed Consumption, Growth, Feed Conversion, Carcass Composition and Bio-economic Analysis

Yazarlar:

İbrahim Okumuş *(1) | Mehmet Derya Mazlum (2)

Yayıncı:

Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi:

Turkish Journal of Fisheries and Aquatic Sciences 2002 Vol.2 Issue 2

Belge Tipi:

Makale

Yayın Tarihi:

3/2002

Belge Dili:

Türkçe

Document ID (Org No.):

2000838696

Sıklık:

Üç Aylık

pISSN:

1303-2712

Anahtar kelimeler:

Özet:

 

Feed consumption (FC), growth, condition factor (CF), feed conversion (FCR), tissue composition and the bioeconomics  of production were examined in juvenile rainbow trout (Oncorhynchus mykiss) fed three commercial steam  pelleted feeds over 22 weeks. Fish were held in six 300 l fiberglass tanks with two replicates of 50 fish (initial weight ca.16.5  g and CF ca. 1.24) per treatment. The trial was run at ambient temperature (10.8-23.3ºC) under natural summer-autumn  photoperiod (40º55'N 40º12'E) and the fish were fed to apparent satiation twice per day.  All feeds exhibited characteristics of a typical ?standard? trout grower and among the main nutrient components only  protein contents slightly differed from manufacturer?s declarations. Mean weights of the fish at the end of the trial were  383.6, 359.6 and 366.9 g, the final weight of the fish given feed A being significantly higher than those given feeds B and C  (P<0.05). CF increased during the course of trial and was ca 1.6 at termination with small differences among groups. Mean  daily feed consumption varied from 1.1 to 4.4% of body weight (bw), but overall means of the groups showed slight  variations, 2.11-2.22% of bw. FCR and the protein efficiency ratios (PER) were within the ranges 1.04-1.12 and 2.03-2.08  and did not differ significantly among groups. Feed did not influence on dressing percentage, but it seemed to affect on lipid  content of the tissue. Feed cost of kg weight gain was highest for feed C, while it was similar for other two feeds. 	 	 		 .

 

Feed consumption (FC), growth, condition factor (CF), feed conversion (FCR), tissue composition and the bioeconomics  of production were examined in juvenile rainbow trout (Oncorhynchus mykiss) fed three commercial steam  pelleted feeds over 22 weeks. Fish were held in six 300 l fiberglass tanks with two replicates of 50 fish (initial weight ca.16.5  g and CF ca. 1.24) per treatment. The trial was run at ambient temperature (10.8-23.3ºC) under natural summer-autumn  photoperiod (40º55'N 40º12'E) and the fish were fed to apparent satiation twice per day.  All feeds exhibited characteristics of a typical ?standard? trout grower and among the main nutrient components only  protein contents slightly differed from manufacturer?s declarations. Mean weights of the fish at the end of the trial were  383.6, 359.6 and 366.9 g, the final weight of the fish given feed A being significantly higher than those given feeds B and C  (P<0.05). CF increased during the course of trial and was ca 1.6 at termination with small differences among groups. Mean  daily feed consumption varied from 1.1 to 4.4% of body weight (bw), but overall means of the groups showed slight  variations, 2.11-2.22% of bw. FCR and the protein efficiency ratios (PER) were within the ranges 1.04-1.12 and 2.03-2.08  and did not differ significantly among groups. Feed did not influence on dressing percentage, but it seemed to affect on lipid  content of the tissue. Feed cost of kg weight gain was highest for feed C, while it was similar for other two feeds. 	 	 		 .

Makale detayları

Evaluation of Commercial Trout Feeds: Feed Consumption, Growth, Feed Conversion, Carcass Composition and Bio-economic Analysis

Yazarlar:

İbrahim Okumuş *(1) | Mehmet Derya Mazlum (2)

Yayıncı:

Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi:

Turkish Journal of Fisheries and Aquatic Sciences 2002 Vol.2 Issue 2

Belge Tipi:

Makale

Yayın Tarihi:

3/2002

Belge Dili:

Türkçe

Document ID (Org No.):

2000838696

Sıklık:

Üç Aylık

pISSN:

1303-2712

Rainbow trout

Oncorhynchus mykiss

feeding

feed consumption

growth

feed conversion

tissue composition

bio-economic analysis

Sayı

Makale detayları

Yazarlar: İbrahim Okumuş *(1) | Mehmet Derya Mazlum (2)

Yayıncı: Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi: Turkish Journal of Fisheries and Aquatic Sciences 2002 Vol.2 Issue 2

Belge Tipi: Makale

Yayın Tarihi: 3/2002

Belge Dili: Türkçe

Document ID (Org No.): 2000838696

Sıklık: Üç Aylık

pISSN: 1303-2712

Sayı

Yazarlar:

İbrahim Okumuş *(1) | Mehmet Derya Mazlum (2)

Yayıncı:

Trabzon Su Ürünleri Merkez Araştırma Enstitüsü

Dergi:

Turkish Journal of Fisheries and Aquatic Sciences 2002 Vol.2 Issue 2

Belge Tipi:

Makale

Yayın Tarihi:

3/2002

Belge Dili:

Türkçe

Document ID (Org No.):

2000838696

Sıklık:

Üç Aylık

pISSN:

1303-2712