1. Summary of the “Fecal Worm Egg Count Reduction” Trials in Merck Animal Health National Data Base 2018
Donald H. Bliss1
Robert D. Moore2
William G. Kvasnicka3
1MidAmerica Ag Research, Verona, WI
2College of Agriculture, Biotechnology & Natural Resources, University of Nevada
3University of Nevada, Professor Emeritus

2. Protocol for Fecal Worm Egg Count Reduction Test (FECRT)
All clinics agreed to use a standard protocol:
20 samples taken at the time of treatment.
20 samples taken 14-days after treatment.
Pre-/post-treatment samples sent to same lab:
● Treatment not revealed until test completed.
● Modified WI Sugar Flotation Technique (Eggs/3 g).
● Results sent to participating clinic and entered
in Merck Animal Health National Database.

3. Fecal Egg Count Reduction Test Results (All Trials-2018)
250+ Participating Vet Clinics.
24+ States Represented.
721 Trials Completed.
24,186 Samples Analyzed.
12,171 Pre-treatment Samples.
12,015 Post-treatment Samples.

4. Table 1: Efficacy Summary for Fecal Egg Count Reduction Test Conducted with Macrocyclic Lactone Endecticide Pour-On Products ( ).
_________________________________________________________________ No. of No. of Egg Counts/3g* Percent
Products Trials Samples Pre-Rx Post-Rx Efficacy(%)
Pour-ons:
Ivomec® PO %
Ivermectin PO , %
Dectomax® PO %
Cydectin® PO %
Eprinex® PO %
PO Summary , %
_________________________________________________________________
*All samples taken at Rx and again 14-days post-Rx.

5. No. of No. of Egg Counts/3g* Percent
Table 2: Efficacy Summary for Fecal Egg Count Reduction Test Conducted with Injectable Macrocylic Lactone Endecticide Products ( ).
__________________________________________________________________________________
No. of No. of Egg Counts/3g* Percent
Products Trials Samples Pre-Rx Post-Rx Efficacy
Injections:
Ivomec® Inj %
Ivomec® Plus %
Dectomax® Inj , %
Cydectin Inj %
Ivermectin Inj %
LongRange %
Inj. Summary: , %
_____________________________________________________________
*All samples taken at Rx and again 14-days post-Rx.

6. Table 3: Efficacy Summary for Fecal Egg Count Reduction Test Conducted with Various Safe-Guard® & Panacur® Formulations (2018).
______________________________________________________________________________________
No of No of Egg Counts/3g* Percent
Products Trials Samples Pre-Rx Post-Rx Efficacy
Panacur® Drench , %
SG Drench/Paste , %
Summary-Drench , %
SG Feed , %
SG 1.96% %
SG Mineral %
Liquid Feed/cubes
blocks/Paste %
Overall Summary , ** %
________________________________________________________________
All samples taken at Rx and again 14-days post-Rx
** Note: Coccidia prevalence was reduced by 56.5%.

7. Table 4: Efficacy Summary for Fecal Egg Count Reduction Test Conducted with Safe-Guard®/Panacur® in Combination with Various Endecticide Formulations (2018).
_____________________________________________________________________________________
Combination No of No of Egg Counts/3g Percent
Product Trials Samples Pre-Rx Post-Rx Efficacy
Safe-Guard® or Panacur ® plus:
Ivomec® Inj./plus/PO %
Ivermectin PO/Inj , %
Dectomax® Inj./PO %
Cydectin PO %
Combination , * %
Summary
_______________________________________________________
Note: Coccidia prevalence was reduced by 76.9%

8. Table 5: Efficacy Summary for Fecal Egg Count Reduction Test Conducted for all Products (2009-2018).
______________________________________________________________________________________
Number of Number of Egg Counts/3g** Percent
Products Trials Samples Pre-Rx Post-Rx Efficacy(%)
Endecticide
Injectable: , %
Pour-On: , %
Safe-Guard®
/Panacur® , %
Combination
Treatment*** , %
______________________________________________________________________
*All samples taken at Rx and 14-days post-Rx.
** Safe-Guard® plus an Endecticide.

9. Table 6: Comparison of FECRT Efficacy for ML Pour-Ons 2008(AABP) vs
Products No. of Trials Percent No. of Trials Percent Efficacy Efficacy Efficacy Change
Ivomec® % % %
Ivermectin % % %
Dectomax® % % %
Cydectin® % % %
Eprinex® %
Summary % % %
Updated 2018

10. Table 7: Comparison of FECRT Efficacy ML Injectables: 2008(AABP) vs
Products No. of Trials Percent No. of Trials Percent Efficacy 2008 Efficacy Efficacy Change Ivomec® Inj % % % Ivomec® Plus % % + 4.3% Ivermectin Inj % % - 8.6% Dectomax® % % % Cydectin® % % -14.5% LongRange % Summary % % -15.1%