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Asian-Australas J Anim Sci > Volume 18(9); 2005 > Article
Ruminant Nutrition and Forage Utilization
Asian-Australasian Journal of Animal Sciences 2005;18(9): 1262-1266.
DOI: https://doi.org/10.5713/ajas.2005.1262    Published online December 1, 2005.
Effects of Feeding Condensed Tannin-containing Plants on Natural Coccidian Infection in Goats
Sam N. Hur, Abdul L. Molan, Jang O. Cha
Abstract
Twelve Korean native goats, spontaneously infected with mixed species of Eimeria were used to study the possible direct anticoccidial effect of feeding condensed tannin-containing plants on the production of Eimeria oocysts. The effects of feeding pine (Pinus densifora) needles, oak (Quercus acutissima) leaves and lucerne chaff on coccidia oocyst output were studied for a period of 10 days post-feeding. The results indicate that feeding fresh pine needles (40 g condensed tannins (CT) dry matter (DM)/day/goat) and oak leaves (40 g CT DM/day/goat) in combination with lucerne chaff had rapid anticoccidial activities in goats as demonstrated by a sharp decrease in oocyst production. Two days after feeding, the numbers of oocysts per gram of faeces (OPG) from the goats fed pine needles with lucerne chaff, and from goats fed oak leaves reduced by 40% and 44% compared to pre-feeding, respectively. On the sixth day after commencing feeding pine needles and oak leaves, the reduction was 81% and 72%, respectively. Ten days after feeding pine needles and oak leaves, the OPG was reduced by 93% and 85%, respectively compared to pre-feeding. Statistical analysis showed that feeding pine needles and oak leaves to goats naturally infected with coccidia significantly (p<0.001) reduced the numbers of oocysts compared to the control group fed lucerne chaff only. Four clinically important species of coccidia, Eimeria parva, Eimeria ninakohlyakimovae, Eimeria christenseni and Eimeria arloingi were identified in Korean native goats.
Keywords: Eimeria; Goats; Pine Needles; Oak Leaves; Anticoccidial Activity


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