[Home ] [Archive]   [ فارسی ]  
:: Main :: About :: Current Issue :: Archive :: Search :: Submit :: Contact ::
Search in website

Advanced Search
..
Receive site information
Enter your Email in the following box to receive the site news and information.
..
Indexing:
..
RSS

AWT IMAGE

..
:: Volume 21, Issue 4 (1-2013) ::
isfj 2013, 21(4): 41-56 Back to browse issues page
Effect of Dietary Protein and Energy Levels on the Growth and Body Composition of Juvenile Orange-spotted Grouper, Epinephelus coioides
J. Marammazi * 1, E. Pagheh , Z. Mokhaiier
Abstract:   (15339 Views)
To evaluate the protein and energy requirement of orange-spotted grouper, Epinephelus coioides fingerlings, nine experimental diets including 3 levels of crude protein (40%, 50% and 60%) and 3 levels of digestible energy (DE, 14, 16 and 18KJ.g-1), were tested. Triplicate 300 L circular tanks provided with flow-through water system (2L. min-1) and air stone and each stocked with 20 juvenile of grouper fish (16.79±0.4g) were applied to adopt an experimental test for 8-weeks rearing period. The stocked fishes were fed experimental diets to approximate satiation, twice a day. Results showed that the survival rate, hepatosomatic index (HSI) and condition factor (CF) were independent of the dietary treatments, but final weight, weight gain, specific growth rate(SGR), feed efficiency (FE), feed conversion ratio (FCR), protein efficiency ratio (PER) and daily feed intake (DFI) were significantly affected by protein and digestible energy levels (P<0.05). Diet 5 (50%CP and 16KJ.g-1 DE) was the preferred among the tested diets and resulted in the best growth performance, feed and protein efficiency and nutrient utilization among the examined diets. DFI was the lowest for diet with the highest protein (60%) and energy (18KJ.g-1). Apparent net protein utilization (ANPU) varied insignificantly (P>0.05) between the treatments. viscerosomatic index(VSI) increased significantly with the increasing of diet energy level. Body lipid, ash and moisture contents were affected by dietary protein and energy levels. Body lipid content increased with increasing dietary energy levels, but carcass ash and moisture decreased. Body protein content was not affected by dietary energy level, but significantly increased when protein increased from 40% to 50% at same energy levels (P<0.05). The study revealed that fingerlings of orange-spotted grouper, E. coioides showed highest growth performance when fed diet containing 50% crude protein, 16KJ.g-1 digestible energy with the P/DE ratio, of 31.25mg/kJ. *Corresponding author
Keywords: Epinephelus coioides, protein, energy, growth, body composition
Full-Text [PDF 332 kb]   (4121 Downloads)    
Type of Study: Research | Subject: تغذيه
Received: 2013/06/19 | Accepted: 2013/08/26 | Published: 2013/08/26
Send email to the article author

Add your comments about this article
Your username or Email:

CAPTCHA



XML   Persian Abstract   Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Marammazi J, Pagheh E, Mokhaiier Z. Effect of Dietary Protein and Energy Levels on the Growth and Body Composition of Juvenile Orange-spotted Grouper, Epinephelus coioides. isfj 2013; 21 (4) :41-56
URL: http://isfj.ir/article-1-798-en.html


Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Volume 21, Issue 4 (1-2013) Back to browse issues page

با کسب مجوز از دفتر کمیسیون بررسی نشریات علمی وزارت علوم، تحقیات و فنآوری مجله علمی شیلات بصورت آنلاین می باشد و تعداد محدودی هم به چاپ می رساند. شماره شاپای جدید آن ISSN:2322-5998 است

Persian site map - English site map - Created in 0.05 seconds with 41 queries by YEKTAWEB 4645