Preliminary Study of the Influence of Water Temperature on the Grass Carp Hemorrhage Disease

The grass carps infected by the Fish Reovirus(FRV) were fed in constant temperature water, in which there are no notable differences of the death-rate(P>0.05)from 24℃ to 30℃. However, when the water temperature was cut down to 20℃ and gone up to 33℃the death-rate were marked reduction(P<0.01). Because of reduction of the water temperature the peak of death would be delaied. The result indicated that it did not cause a large number of grass carps to die under the condition of infection below 20℃ for a ...