Comparison of FAMACHA scores and need for deworming in hair sheep and meat goats grazed together or sheep grazed alone
S. Hart, T. Gipson, R. Pirtle, and W. CubbageJournal of Animal Science 89(E-Supplement 2):400. 2011
This study compared FAMACHA scores and need for deworming in hair sheep and goats being grazed together or hair sheep grazed alone. The study involved Boer and Spanish goats and hair sheep crosses of Katahdin, St. Croix, Dorper, Gulf Coast Native, and Barbadoes Blackbelly. Treatments were 1) hair sheep grazed alone (88 animals/16.2 ha) or 2) goats and hair sheep grazed together (38 hair sheep and 71 goats/24.3 ha) on tallgrass native range during the summer (average annual precipitation of 922 mm). Animals were FAMACHA scored (FS) April 30 at the beginning of the study and animals scoring 4 and 5 were treated with moxidectin (MOX; 10 ml). Animals then were FAMACHA scored May 17, June 8, July 26, August 18, and September 20. Animals with FS of 4 were administered either 2.0 g of copper oxide wire particles (COWP) or 3.4 g of Cayenne pepper (CP). Animals with a FS of 5 were treated with MOX. Animals that were dewormed were fecal sampled for determination of fecal egg counts (FEC) by McMaster procedure and an additional three to six animals that were not dewormed. On the hair sheep and goat treatment, goats had higher FS than hair sheep (3.80 vs 2.63; P < 0.01), higher FEC (532 vs 188 epg; P < 0.02) and required more deworming (61.8 vs 13.5%; P < 0.001). Hair sheep grazing alone had a lower FS than hair sheep grazing with goats (2.20 vs 2.63; P < 0.01), lower FEC (50 vs 188 epg; P < 0.01), and required less deworming (2.1 vs. 13.5%; P < 0 .001). When animals were administered CP, FEC at the subsequent sampling increased by 63%. whereas COWP decreased FEC 36% at the subsequent sampling. Administration of MOX reduced FEC 47% in the subsequent sampling. Hair sheep grazed with goats had lower FS, lower FEC, and required substantially less deworming than the goats they grazed with, but sheep grazing with goats required more deworming than sheep grazing alone. COWP was more effective than CP in reducing FEC.
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