Table 3. Ivermectin concentrations used in injection dose to determine the toxicity (lethal dose, LD
50
) of channel catfish
Injection dose (mg Ivermectin/kg body weight)
Number of experimental fish
Number of death fish
Death rate
0
4
0
0/4
0.5
4
0
0/4
0.75
4
1
1/4
1.25
4
2
2/4
1.75
4
3
3/4
2.25
4
3
3/4
2.75
4
4
4/4
3.25
4
4
4/4