[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 19, Issue 4 (1-2011) ::
isfj 2011, 19(4): 129-136 Back to browse issues page
Effects of feeding frequency on growth, survival and water quality of rearing tanks of the Indian white shrimp (Penaeus indicus)
H. Moradizadeh Fard * 1, M. Soudagar , S. Gorgin , A. Pasandi
Abstract:   (16655 Views)
The effects of feeding frequency on growth performance, feed conversion ratio and survival of post-larvae Indian white shrimp, Penaeus indicus were evaluated in a 56-day study. The study was conducted in sixteen fiberglass tanks provided with aerated recirculating water with four replicate tanks for each treatment. Twenty post larvae with a mean weight of 1.56 0.02g were hand-counted and stocked into each of the replicate tanks and fed 2, 4, 6 and 8 times a day, respectively. Final body weights were measured significantly lower at 2 and 4 times/day (5.76 0.08 and 5.96±0.15g, respectively) than 6 and 8 times/day (8.54±0.16 and 8.31 0.19g, respectively) treatments (P<0.05). There were significant differences for the Feed Conversion Ratio (FCR) of shrimps fed 6 and 8 times/day with other treatments. The best mean FCR was obtained from the sixth daily-feeding (P<0.05). The Specific Growth Rate (SGR) of shrimps fed 6 times/ day was significantly (P<0.05) higher (3.03 0.04%) than shrimps fed with all other feeding regimes, while shrimps fed 8 times/ day had a higher SGR (2.95 0.05%) than shrimps fed 2 times/day (2.36 0.06%) and 4 times/day (2.39 0.11%). Survival rate was significantly different (P<0.05). The best mean survival rate was obtained from 6 times/day feeding (P<0.05). There were significant differences for survival rates (P<0.05). The water quality parameters (salinity, dissolved oxygen and temperature) were not different among treatments. However, some water quality parameters (ammonium, nitrate, nitrite, phosphate and pH) were significantly different among the treatments. Results suggested that there was an advantage in feeding P. indicus more frequently than 4 times per day
Keywords: Nutrition, Penaeus indicus, Feed Conversion Ratio
Full-Text [PDF 980 kb]   (4766 Downloads)    
Type of Study: Research | Subject: بهداشت بيماريها
Received: 2011/06/7 | Accepted: 2015/07/11 | Published: 2015/07/11
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:

Moradizadeh Fard H, Soudagar M, Gorgin S, Pasandi A. Effects of feeding frequency on growth, survival and water quality of rearing tanks of the Indian white shrimp (Penaeus indicus) . isfj 2011; 19 (4) :129-136
URL: http://isfj.ir/article-1-138-en.html


Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Volume 19, Issue 4 (1-2011) 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 0.06 seconds with 41 queries by YEKTAWEB 4645