[Home ] [Archive]   [ فارسی ]  
:: Main :: About :: Current Issue :: Archive :: Search :: Submit :: Contact ::
:: Volume 6, Issue 3 (9-2019) ::
3 2019, 6(3): 39-49 Back to browse issues page
Optimizing the condition of rearing Astronotus ocellatus using statistical method Central Composition Design (CCD)
Abstract:   (134 Views)
This study was designed to determine the effects of parameters: temperature, pH and dKH on growth indices of Oscar fish (Astronotus ocellatus). For this purpose, in each aquarium, there was specific combinations of temperature, pH and dKH, using design of experiment with Design Expert 7.0, and in total 14 combinations or treatments, each with 3 repetitions and thus, 3 fishes were entered in each aquarium randomly. In timespan 1-30 days, the measurement of body weight and body length was done, and growth indices including: weight gain (WG) and length gain (LG) were identified. Studying of growth pattern showed that the best mathematical model to show the changes of growth indices was quadratic equation. Carbonate hardness had the most effects on weight changes. The optimum temperature was 23-26˚c, pH was 6.7-8.3 and dKH was 5-6. Growth pattern according to length gain, was quadratic equation. Carbonate hardness had the most effects and the optimum range was similar to optimum condition for weight gain.
 
Keywords: Oscarfish (Astronotus ocellatus), temperature, acidity, carbonate hardness, growth indices.
Full-Text [PDF 708 kb]   (43 Downloads)    
Type of Study: Research | Subject: Special
Received: 2019/10/2 | Accepted: 2019/10/2 | Published: 2019/10/2
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:

Optimizing the condition of rearing Astronotus ocellatus using statistical method Central Composition Design (CCD). 3. 2019; 6 (3) :39-49
URL: http://ornamentalaquatics.ir/article-1-210-en.html


Volume 6, Issue 3 (9-2019) Back to browse issues page
مجله علمی-ترویجی آبزیان زینتی Journal of Ornamental Aquatics
Persian site map - English site map - Created in 0.06 seconds with 32 queries by YEKTAWEB 3991