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Table 1 Mean microfilariae (MF) counts (per mL) after treatment with a single SC dose of either PH 6 (0.17 mg/kg) or PH 12 (0.5 mg/kg) or a single oral treatment with moxidectin (0.25 mg/kg) on Day 0

From: Microfilarial reduction following ProHeart® 6 and ProHeart® SR-12 treatment in dogs experimentally inoculated with a resistant isolate of Dirofilaria immitis

Day of Study

Test Group

0

1

3

7

14

21

28

42

56

84

112

140

168

Control

15,000.0

18,308.3

16,488.3

12,566.7

14,756.7

19,400.0

20,383.3

15,830.0

16,381.7

20,816.7

23,133.3

18,633.3

26,633.3

PH 6

13,916.7

16,531.7

11,796.7

3141.7

4358.3

4318.3

2755.0

1530.0*

1421.7

675.0*

780.0*

203.7*

176.8*

PH 12

11,520.0

14,480.0

6330.0

2656.0

2486.0

2918.0

1786.0

916.2*

997.0*

646.0*

NA

NA

NA

Oral Moxidectin (0.25 mg/kg)

12,033.3

2501.7

3138.3

3213.3

2830.0

3833.3

3333.3

2040.0

2983.3

1531.7

NA

NA

NA

  1. *Significantly different from control mean (P < 0.05)