In this study, the effects of different primary stocking densities (45, 50, 55 and 60 shrimp/m2) of whiteleg shrimp postlarvae (PL12) were evaluated on the growth and survival rates. Brackish water (10.52±0.43 psu) was provided from the Caspian Sea. The experiments were performed in 12 circular concrete ponds with a sandy bed (area: 78m2) with four treatments and three replications for each treatment. The culture period was 75 days and the average water temperature was 27.4±1.79°C. The results showed that different stocking densities caused statistical significant difference in growth and survival rates among various experimental treatments (P<0.05). Increasing the stocking density resulted in decreasing the amounts of weight gain, survival rate (SR), specific growth rate ( SGR ) and the average daily growth ( ADG ). However, FCR was significantly different among treatments (P<0.05) and was not dependent on the primary stock density of postlarvae. The highest growth rate ( SGR =11±0.04 and ADG =0.25±0.01 gr/day/ind.), production (43.6±3.3 kg shrimp in 78 m2) and survival rate were observed in the lowest density treatment (45 shrimp/m2).
Farabi S, Matinfar A, Salehi A, Sharifian M. Impact of stocking density on whiteleg shrimp (Litopenaeus vannamei, Boone, 1931) culture in brackish water of the Caspian Sea. isfj 2017; 26 (3) :65-75 URL: http://isfj.ir/article-1-1652-en.html
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