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Title

THE STUDY OF VIBROMAX VACCINE EFFICIENCY AS INCREASING OF THE RESISTANCE AGAINST SALINITY AND FORMALIN STRESSES IN THE INDIAN WHITE SHRIMP POST LARVAE (FENNEROPENAEUS INDICUS)

Writers

BAHARI A.H.

Pages

 Start Page 37 | End Page 42

Abstract

 This study, which has been done in Hormoz larve Hatchery at Kohestak in Minab in 1385, the efficiency of VIBROMAX VACCINE and its effects on the survival rates of stress tests against salinity and formalin in POST LARVAE stages( PL1,PL5 and PL15) in INDIAN WHITE SHRIMP (Fenneropenaeus indicus )was studied. The effects of vaccine through the immersion(T2) and the feeding of vaccine to shrimp through ARTEMIA nauplii ( ARTEMIA franciscana) ENRICHMENT (T3)and along with a control group(T1) for comparison were used. Taking into consideration of 3 treatments and 3 replication for each of them, 9 similar vessels were used, which in amounts of 10 liters were refilled with water and reserved with 100 larvae in liters in zoa stages and were fed in a completely randomized design and comparison of means was done through Duncan test. Duration of experiment was zoa stage to PL15 that in the end of 12, 16 and25 days survival rates were studied. Results showed that the highest amounts of survival in salinity test(10 ppt)(%) observed in PL1,PL5 and PL15 stages in T3 (68.00, 72.33and 75.67) which had a significance difference in regard to the control treatment ( 48.33 , 46.67 and 53.33)and T2 (60.00 ,61.33and64.67) at P<0.05 level. The highest amount of survival in salinity test(20 ppt)(%) observed in PL1, PL5 and PL15 stages in T3 (84.00, 80.00and 86.00) that against of control treatment (65.00,65.33 and 66.00) had a significance difference (P<0.05). The highest amount of survival rates in formalin test(100 ppm) (%) observed in T3 (81.33, 76.00 and 83.33) that against of control treatment (52.33, 56.00and 58.67)and T2(73.33 ,68.33 and69.67) had a significance difference (P<0.05).

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