Effect of condensed tannins extracted from four forages on the viability of the larvae of deer lungworms and gastrointestinal nematodes

2000 ◽  
Vol 147 (2) ◽  
pp. 44-48 ◽  
Author(s):  
A. L. Molan ◽  
W. C. McNabb ◽  
S. O. Hoskin ◽  
T. N. Barry
Keyword(s):  
Condensed Tannins ◽  
Gastrointestinal Nematodes

scholarly journals Effects of condensed tannins towards dairy caprine gastrointestinal nematodes

2019 ◽  
pp. 01-09
Author(s):  
Suarez VH ◽  
Olmos LH ◽  
Martinez GM ◽  
Sandoval GV ◽  
Alfaro EJ ◽  
...  
Keyword(s):  
Condensed Tannins ◽  
Body Condition Score ◽  
Condensed Tannin ◽  
Gastrointestinal Nematode ◽  
Gastrointestinal Nematodes ◽  
Dairy Goat ◽  
Condition Score ◽  
Ad Libitum ◽  
Corn Grain ◽  
Made In

In order to evaluate condensed tannins (CT) effect on dairy goat gastrointestinal nematodes (GIN) under a grazing and confined systems, two experiments (E1 and E2) were made. On both, goats were kept in two groups of 10 animals each. Groups were: control, without treatment (CG) and CT supplemented (CTG) daily with 25 g (1,25%) in E1 and 75 g (2%) in E2. During the E1, feeding was based on Lucerne (Medicago sativa) grazing and supplementation with 500 g of corn grain and during the E2, stabled milking goats ate 500 g of corn grain and ad libitum lucerne hay. Biweekly, faecal egg counts (FEC) and coprocultures were made. In addition, FAMACHA© technique, body condition score (BCSS) and ingested food were recorded each two weeks during the 90 days (E1) and 76 (E2) days of trial. The FEC values in most of the study were low and no significant differences (p<0.78) were detected between groups. Mean FEC were 534 (CTG) and 357 (CG) during E1 and 509 (CTG) and 484 (CG) during E2. The predominant NGI genera were Trichostrongylussp. (48.1%), Haemonchus sp. (39.9%) and Teladorsagia sp. (12.0%). FAMACHA© scores did not show significant (p<0.41) differences between groups, but the CG (median=3) showed a BCS significantly (p<0.05) higher than those of CTG (median=2.5). The average milk production did not present statistically significant differences between groups (p<0.57), between sampling dates (p<0.23) and group x sampling dates (p<0.65). Under the conditions of these studies 25g or 75 g of CT in the diet had no anthelmintic or productive effects. Keywords: Gastrointestinal nematode; Dairy goat; Condensed tannin; Production

Intake and Selection of Goats Grazing Heterogeneous Vegetation: Effect of Gastrointestinal Nematodes and Condensed Tannins

2019 ◽  
Vol 72 (6) ◽  
pp. 946-953 ◽  
Author(s):  
Rafael Arturo Torres-Fajardo ◽  
Jorge Augusto Navarro-Alberto ◽  
Javier Ventura-Cordero ◽  
Pedro Geraldo González-Pech ◽  
Carlos Alfredo Sandoval-Castro ◽  
...  
Keyword(s):  
Condensed Tannins ◽  
Gastrointestinal Nematodes ◽  
Vegetation Effect ◽  
Selection Of ◽  
Heterogeneous Vegetation

Long-term effects of drenches with condensed tannins from Acacia mearnsii on goats naturally infected with gastrointestinal nematodes

2014 ◽  
Vol 205 (3-4) ◽  
pp. 725-729 ◽  
Author(s):  
Livio M. Costa-Júnior ◽  
Jailson S. Costa ◽  
Ítala C.P.D. Lôbo ◽  
Alexandra M.S. Soares ◽  
Adibe L. Abdala ◽  
...  
Keyword(s):  
Condensed Tannins ◽  
Gastrointestinal Nematodes ◽  
Long Term Effects ◽  
Acacia Mearnsii

scholarly journals Impact of chemical structure of flavanol monomers and condensed tannins on in vitro anthelmintic activity against bovine nematodes

Parasitology ◽  
2016 ◽  
Vol 143 (4) ◽  
pp. 444-454 ◽  
Author(s):  
OLIVIER DESRUES ◽  
CHRISTOS FRYGANAS ◽  
HONORATA M. ROPIAK ◽  
IRENE MUELLER-HARVEY ◽  
HEIDI L. ENEMARK ◽  
...  
Keyword(s):  
Condensed Tannins ◽  
Anthelmintic Activity ◽  
Structural Features ◽  
Negative Influence ◽  
Gastrointestinal Nematodes ◽  
Structural Parameter ◽  
Larval Feeding ◽  
Inhibition Assay ◽  
Feeding Inhibition

SUMMARYPlants containing condensed tannins (CT) may have potential to control gastrointestinal nematodes (GIN) of cattle. The aim was to investigate the anthelmintic activities of four flavan-3-ols, two galloyl derivatives and 14 purified CT fractions, and to define which structural features of CT determine the anti-parasitic effects against the main cattle nematodes. We used in vitro tests targeting L1 larvae (feeding inhibition assay) and adults (motility assay) of Ostertagia ostertagi and Cooperia oncophora. In the larval feeding inhibition assay, O. ostertagi L1 were significantly more susceptible to all CT fractions than C. oncophora L1. The mean degree of polymerization of CT (i.e. average size) was the most important structural parameter: large CT reduced larval feeding more than small CT. The flavan-3-ols of prodelphinidin (PD)-type tannins had a stronger negative influence on parasite activity than the stereochemistry, i.e. cis- vs trans-configurations, or the presence of a gallate group. In contrast, for C. oncophora high reductions in the motility of larvae and adult worms were strongly related with a higher percentage of PDs within the CT fractions while there was no effect of size. Overall, the size and the percentage of PDs within CT seemed to be the most important parameters that influence anti-parasitic activity.

Effect of Jatropha curcas Latex on L3 Haemonchus contortus Larval Motility

2017 ◽  
Vol 9 (3) ◽  
Author(s):  
Noorzaid Muhamad ◽  
Syahirah Sazeli ◽  
Resni Mona ◽  
Jannathul Firdous
Keyword(s):  
Larvicidal Activity ◽  
Jatropha Curcas ◽  
Haemonchus Contortus ◽  
Anthelmintic Resistance ◽  
Small Ruminants ◽  
Gastrointestinal Nematodes ◽  
Dose Dependent ◽  
Plants Extract

The anthelmintic resistance has limited the control of gastrointestinal nematodes of small ruminants and thus has awakened interest in the study of plants extract as a source of anthelmintics. These experiments were carried out to evaluate the in vitro efficacy of Jatrophacurcas latex extract against Haemonchuscontortus larval motility. To evaluate the larvicidal activity, H.contortus L3 were incubated with the extracts with varying concentration of 5 mg/mL, 10 mg/mL, 15 mg/mL and 20 mg/mL at 27°C for 48, 72 and 96 hrs. The results were subjected to the Kruskal-Wallis test (P less than 0.05). The extracts showed dose-dependent larvicidal effects. These results suggest that J.curcas can be used to control gastrointestinal nematodes of small ruminants.

Efficacy of anthelmintic Eprimek against gastrointestinal nematodes in sheep

2020 ◽  
Vol 14 (4) ◽  
pp. 99-103
Author(s):  
V. I. Kolesnikov
Keyword(s):  
Live Weight ◽  
Gastrointestinal Nematodes ◽  
Production Environment ◽  
Control Groups ◽  
The North ◽  
Helminth Eggs ◽  
Nematode Eggs ◽  
Flotation Technique ◽  
And Control ◽  
Experimental Group

The purpose of the research is studying the efficacy of Eprimek (Eprinomectin) against gastrointestinal nematodes in sheep.Materials and methods. A commercial experiment to study the antiparasitic efficacy of Eprimek was carried out in June 2020 on 300 lambs of the North Caucasian breed in a private flock of Filimonovskaya Village, Izobilnensky District, the Stavropol Territory, which were divided into two groups. The experimental group of lambs (290 animals) was injected Eprimek subcutaneously at the earset at a dose of 1 ml/50 kg of live weight (10 mg of Eprinomectin in 1 ml), and 10 lambs were not treated; they were used as control. We collected feces from the lambs of the experimental and control groups before administration of the drugs and after 15 and 30 days. Fecal samples were examined by the flotation technique with a saturated solution of ammonium nitrate with counting nematode eggs in 1 g of feces. The results were processed statistically.Results and discussion. Eprimek showed a decrease in the number of excreted helminth eggs from 225.1±28.2 to 4.1±2.3 in production environment at a dose of 1 ml/50 kg of live weight, according to coprological studies on the 15th day after treatment in the experimental group of lambs. The efficacy was 98.2%, and 70% of the animals were free from the infection. The intensity of infection of the control lambs by gastrointestinal nematodes was 131–151 eggs per 1 g of feces at 100% prevalence.

A genome-wide survey reveals a deletion polymorphism associated with resistance to gastrointestinal nematodes in Angus cattle

2014 ◽  
Vol 14 (2) ◽  
pp. 333-339 ◽  
Author(s):  
Lingyang Xu ◽  
Yali Hou ◽  
Derek M. Bickhart ◽  
Jiuzhou Song ◽  
Curtis P. Van Tassell ◽  
...  
Keyword(s):  
Gastrointestinal Nematodes ◽  
Deletion Polymorphism ◽  
Angus Cattle ◽  
Genome Wide ◽  
A Genome ◽  
Genome Wide Survey
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