Tuesday, August 20, 2013

Egg Counts Continue to Decline

For the individual fecal samples collected on August 8, fecal egg counts (FECs) ranged from 0 to 5700 epg and averaged 1096 + 1239 epg. The median egg count was 625 epg. Egg counts were lower than two weeks ago, as expected, due to more goats being dewormed and the goats grazing a clean, taller pasture.


Untreated goats (n=54) had slightly higher egg counts than the average goat in the test, ranging from 25 to 5,700 epg and averaging 1393 + 1309 epg. The median egg count was 888 epg. For goats dewormed on July 25 (n=19) , fecal egg counts ranged from 0 to 1,700 epg and averaged 278 + 452 epg. The median egg count was 150 epg.


For the goats that were dewormed on July 27 (n=19) , a fecal egg count reduction was calculated. It ranged from -113 to 100 percent and averaged 67 + 58 percent. The median fecal egg count reduction was 92 percent. On most goats, the deworming (usually levamisole, sometimes moxidectin) was efficacious.

Two more fecal egg counts will be factored into the test results. Samples will be collected on August 21 and September 5. The sale bucks will not be chosen until the week of September 9, when the final fecal egg count data becomes available. 

The fecal egg analyses are done by graduate students at Dr. Dahlia O'Brien's parasitology lab at Delaware State University.

Download August 8 (d-56) FEC Report