Effects of Feeding Condensed Tannin-containing Plants on Natural Coccidian Infection in Goats

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.

Growth and carcass characteristics of male Sahelian goats fed leaves or pods of Pterocarpus lucens or Acacia senegal

“…However, Hur et al (2005) showed that feeding goats naturally infected with Eimeria with a diet containing pine needles and oak leaves reduced the numbers of oocysts by 93% and 85%, respectively, during a 10 day trial, and related the results to the content of condensed tannins in the browse studied. In this study, the improvement in nutritional status of the goats could have played an important role, since the animals grew and did not show any clinical signs of infection.…”

Effects of condensed tannin on natural coccidian infection in goat kids

“…Hur et al (2005) found that fresh pine needles and dried oak leaves were able to reduce the oocysts output until 70% in goats, and obtained a 93% of oocyst reduction within 10 days of CT supplementation. Markovics et al (2012) made similar observations in kids fed lentisk foliage, while Saratsis et al (2012) obtained a reduction in oocyst that ranged from 21.3 to 60.2% in lambs supplemented with Sainfoin, after 3 or 4 weeks of hay consumption.…”

“…Hur et al (2005) investigated the efficacy of CT from pine needles and oak leaves in goats naturally infected with coccidia and showed that they significantly reduced the number of oocysts excreted through the faeces. Molan et al (2009) observed the effect of Pinus radiata bark extract on the sporulation of three species of Eimeria in poultry.…”

Percentual de suplementação de fonte taninífera na ração concentrada de caprinos jovens sobre o desempenho e carga parasitária

“…Através da análise de correlação simples, foi verifi cada correlação negativa entre a adição de níveis crescentes da TPR e a contagem total de OOPG durante o período experimental (Figura 2B). HUR et al (2005) observaram uma diminuição acentuada na produção de oocistos em cabras, alimentadas com Pinus densifora, Quercus acutissima, plantas ricas em TC, essa queda na produção de oocistos pode ser a ação direta dos TC em diferentes fases do ciclo de vida do parasita, ao invés de através de uma melhor nutrição proteica das cabras.…”