Basic Science Sector

Citation:

Kamal, S. M., and W. A. Omar, "Effect of Different Stocking Densities on Hematological and Biochemical Parameters of Silver Carp,HypophthalmichthysMolitrix Fingerlings", Life Science Journal, 2011.

Abstract:

The impact of rearing silver carp, Hypophthalmichthysmolitrix to the fingerling stage under threedifferent stocking densities was investigated depending on the hematological and biochemical parameters asindicators of general health state of fish. The present study was carried out for 12 weeks to determine the mostoptimum stocking density for rearing silver carp. Fish were cultured in duplicates of cement ponds under stockingdensities of 3, 6 and 9 fish/m3 as T1, T2 and T3 respectively. The ponds were fertilized weekly with organic fertilizerat rate of 50 g/m3. Results of hematological analyses showed significant increase in T1 for values of RBCs count,hemoglobin, hematocrit and mean corpuscle volume (MCV) while the lowest values were recorded in T3 for allthese parameters. Changing the stocking density had non-significant effect on values of WBCs count, meancorpuscle hemoglobin (MCH) and mean corpuscle hemoglobin concentration (MCHC). Plasma biochemicalanalyses showed that increasing the stocking density caused significant increase in values of plasma glucose, totalprotein, albumin (A) and globulin (G) associated with significant decrease in values of cholesterol and triglycerides.The highest values of A/G ratio were recorded non-significantly in T1 and T3 while the lowest values were recordedsignificantly in T2. Meanwhile T1 showed a significant decrease in values of alkaline phosphatase (ALP), aspartateaminotransferase (AST), alanine aminotransferase (ALT) and uric acid. Values of creatinine showed non-significantincrease among treatments. The findings suggest that the most optimum condition was detected in T1 (3 fish/m3) wheremost of the studied hematological and biochemical parameters were essentially normal and within the range consistentwith good fish health.

Notes:

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