Abstract #W501

# W501
The use of Chambourcin grape extract as a natural anthelmintic in goat kids.
Kimberly A. Cash*1, James D. Caldwell1, Bruce C. Shanks1, Amy L. Bax1, Luke S. Wilbers1, Heather L. Hilsenbeck1, Andrea T. McKnelly1, Taylor N. Drane1, Kelsey L. Basinger1, Jessica K. Clark1, Haley L. Bartimus1, Harley D. Naumann2, 1Lincoln University, Jefferson City, MO, 2University of Missouri Columbia, Columbia, MO.

Gastrointestinal nematode parasitism is one of the greatest economic threats to goat production in the United States. With elevated incidences of anthelmintic resistance there is an increased interest in alternative natural dewormers, such as plants containing condensed tannins. Therefore, the objective of this study, supported by the NCR-SARE graduate grant program, was to evaluate the effects of fermented Chambourcin grape extract on parasite level and performance of goat kids. On October 14, 2014, a total of 45 mixed-breed goat kids (17.17 kg ± 0.79) were stratified by fecal egg count, weight, breed, and sex, and were allocated randomly to one of 3 treatments: 1) an oral dose (10 mL per 4.54 kg of BW) of fermented Chambourcin grape extract at 7-d (D7) intervals, 2) the same dose at 14-d (D14) intervals, or 3) control (30 mL oral dose of water at 14-d intervals). Condensed tannins were extracted, purified, and standardized by the Protein-Precipitable Phenolics method and found to have a concentration of 0.33 mg/mL. Goats were naturally exposed to gastrointestinal parasites on pasture consisting primarily of endophyte-infected tall fescue [Lolium arundinaceum (Schreb.) Darbysh] and mixed browse with access to 16% crude protein corn-soybean meal based creep feed for the duration of the 63-d study. Fecal egg counts, packed cell volumes, FAMACHA scores, weights, and body condition scores were measured every 7 d. Data were analyzed by the PROC MIXED procedure of SAS and treatments were reported as least squares means. Two contrast statements were used to compare the mean of control versus D7 and D14 and the mean of D7 versus D14. Animal was the experimental unit. Start, final, and change from start to final fecal egg counts, packed cell volumes, FAMACHA scores, and body condition scores did not differ (P ≥ 0.12) across treatments. Average daily gain and total weight gain also did not differ (P ≥ 0.42) across treatments. Therefore, fermented Chambourcin grape extract may not be an effective natural anthelmintic for controlling nematodes in creep-fed goat kids.

Key Words: natural anthelmintic, condensed tannin, grape extract