Submitted to: American Society of Animal Science Southern Section Meeting
Publication Type: Abstract Only
Publication Acceptance Date: 10/30/2009
Publication Date: 2/1/2010
Citation: Burke, J.M., Miller, J.E., Mosjidis, J.A., Terrill, T.H. 2010. ntegrated control of gastrointestinal nematodes (GIN) using sericea lespedeza (SL), FAMACHA, and copper oxide wire particles (COWP) in weaned goats in Arkansas. American Society of Animal Science Southern Section Meeting. Volume 88(Suppl.3), PP. 31 Interpretive Summary:
Technical Abstract: Lack of effective anthelmintics for control of GIN in goats has led to the need for an integrated management approach. FAMACHA is an effective tool for selective deworming of Haemonchus contortus-infected goats, while COWP and SL grazing have reduced H. contortus infection. The objective was to examine the effectiveness of these tools in controlling GIN. Spanish doe kids (113.8 ± 1.9 d of age; 16.9 ± 0.3 kg) were randomly assigned to graze bermudagrass (BG; n = 12), SL and grass pasture (SLG; n = 13), or continuous SL (SLC; n = 13). Does were dewormed with COWP or levamisole if FAMACHA was 4 or 5, respectively. Does were fed a commercial 16% CP ration based on NRC requirements and estimated CP of pastures so that 454, 300, and 150 g of supplement/goat was fed 5 d/wk to BG, SLG, and SLC, respectively. A pooled fecal sample was collected from all does for culture on D 0 (day introduced to forage) and from forage groups on D 14, 56, and 70. Trichostrongylus spp. was the predominant nematode in May and June and H. contortus in July; other nematodes were Teladorsagia, Oesophagostomum, and Cooperia. Fecal egg counts (FEC) and blood packed cell volume (PCV) were determined every 14 d between D 0 and 84, and BW every 28 d. Data were analyzed using the mixed models procedure of SAS with a repeated statement for date and forage treatment as the main effect. FEC were log transformed. The mean number of dewormings was 2.1, 1.0, and 1.7 ± 0.3 for BG, SLG, and SLC groups, respectively (P < 0.03). FEC were lower in both SL groups compared with does that grazed BG (P < 0.007). PCV tended to be lower in BG does before D 28, but higher after D 42 (forage x day, P < 0.07). The BG does were lighter than both SL groups of does on D 28 and 56, but groups were similar by D 84 (forage x day, P < 0.002). COWP was not effective in reducing FEC in these does. Because H. contortus was not the predominant nematode, the integrated approaches were only partially effective in controlling GIN in doe kids. Fewer inputs (feed, deworming) were necessary for goats grazing SL than BG.