The effects of rearing density on growth performance and food conversion ratio of Siberian sturgeon (Acipenser baeri Brandt)

Fazeli N., . and Yooneszade B., . and Nateghi S. A., . and Pasha H., . and Kazimi R., . and Bahmani M., . and Zare R., . and Yavari V., . and Pourdehghani M., . The effects of rearing density on growth performance and food conversion ratio of Siberian sturgeon (Acipenser baeri Brandt). pp. 107-115. ISSN 0116-6514

Three year old Siberian sturgeons (Acipenser baerii) were reared at five densities in indoor fiber-glass tanks to evaluate the effects of stocking density on growth survival condition and feed efficiency. Fish (mean weight 46090g) were stocked into 500-L fiber-glass tanks containing 270 liters of water at rates of 6 9 12 15 and 18 fish per tank (3-9 kg/m). The growth trial was conducted over an 8-week period during which the fish were offered a 45-protein commercial ration in slight excess. At the termination of the study the mean weights as well as the lengths and weights of individual fish in each tank were recorded. Biometry takes place every 20 days. The final weights of the fish decreased insignificantly as density increased (p0.05) with fish stocked at a density of kg/m having a mean weight of 746 g and those stocked at 9kg/m having a mean weight of 7.3 g. The percentage of weight gain and feed efficiency also decreased as stocking density increased. No significant differences in GR SGR BWI and FCR were found among treatments (p0.05). The end result shows that Siberian sturgeons seem to be able to tolerate high stocking densities and this species could be easily reared in fiber-glass tanks at the rate of 10 kg.m-.

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Abstract

Three year old Siberian sturgeons (Acipenser baerii) were reared at five densities in indoor fiber-glass tanks to evaluate the effects of stocking density on growth survival condition and feed efficiency. Fish (mean weight 46090g) were stocked into 500-L fiber-glass tanks containing 270 liters of water at rates of 6 9 12 15 and 18 fish per tank (3-9 kg/m). The growth trial was conducted over an 8-week period during which the fish were offered a 45-protein commercial ration in slight excess. At the termination of the study the mean weights as well as the lengths and weights of individual fish in each tank were recorded. Biometry takes place every 20 days. The final weights of the fish decreased insignificantly as density increased (p0.05) with fish stocked at a density of kg/m having a mean weight of 746 g and those stocked at 9kg/m having a mean weight of 7.3 g. The percentage of weight gain and feed efficiency also decreased as stocking density increased. No significant differences in GR SGR BWI and FCR were found among treatments (p0.05). The end result shows that Siberian sturgeons seem to be able to tolerate high stocking densities and this species could be easily reared in fiber-glass tanks at the rate of 10 kg.m-.

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Item Type:	Article
AGROVOC Term:	Acipenser
AGROVOC Term:	Acipenser baeri
AGROVOC Term:	Acipenseridae
AGROVOC Term:	Sturgeons
AGROVOC Term:	Feed conversion efficiency
AGROVOC Term:	Growth rate
AGROVOC Term:	Body weight
AGROVOC Term:	Fish meal
AGROVOC Term:	Evaluation
AGROVOC Term:	Statistical analysis
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:54
URI:	http://webagris.upm.edu.my/id/eprint/7945

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