01808nas a2200217   4500008004100000245012700041210006900168260000900237300001100246490000800257520102600265100002101291700002001312700002201332700001701354700002201371700002201393700002001415700001701435856013801452       2006                        eng d00aEnvironmental impact of ivermectin excreted by cattle treated in autumn on dung fauna and degradation of faeces on pasture0 aEnvironmental impact of ivermectin excreted by cattle treated in  cjuly  a93-1020 v1003 aThe effect of ivermectin excreted in faeces of treated cattle on dung fauna and dung degradation on pasture during autumn was evaluated. Two groups of calves were used. One group was treated subcutaneously with ivermectin while the other remained as untreated control. Faeces deposited on 1, 3, 7, 14 and 21 days post-treatment (dpt) were removed on 1, 3, 7, 14, 21, 30 and 60 days post- deposition (dpd) and were used to determine the concen- tration of ivermectin and the percentage of organic matter and for the collection of colonising organisms. Samples from 1 and 3 dpt contained the highest drug concentration and percentage of organic matter compared to the control group (p<0.05). Faeces from the treated group showed lesser abundance and diversity of arthropods (p<0.05) than the control group. A reduction in numbers and diversity of dung fauna in faecal samples from treated animals was most remarkable at 1, 3 and 7 dpt, coinciding with the highest concentration of ivermectin and organic matter percentage. 1 aIglesias, L., E.1 aSaumell, C., A.1 aFernandez, A., S.1 aFuse, L., A.1 aLifschitz, A., L.1 aRodriguez, E., M.1 aSteffan, P., E.1 aFiel, C., A.  uhttps://scarabnet.myspecies.info/environmental-impact-ivermectin-excreted-cattle-treated-autumn-dung-fauna-and-degradation-faeces-pas02629nas a2200277   4500008004500000020002900045245017000074210006900244260000800313300001100321490000700332520164900339653001401988653001602002653002502018653001602043653001502059100002102074700002002095700001702115700002202132700002202154700002002176700001702196856013802213       2005                        spandsh    a0325-8718 print 1669-23100aImpacto ambiental de la ivermectina eliminada por bovinos tratados en otono, sobre la coprofauna y la degradacion de la materia fecal en pasturas (Tandil, Argentina)0 aImpacto ambiental de la ivermectina eliminada por bovinos tratad  cdec  a83-1030 v343 aA trial was carried out to evaluate the effect of the ivermectin eliminated in the feces of treated calves on the coprofaune and on the physical degradation of dung pats naturally deposited during the autumn in the Tandil zone. Two experimental groups, located in different paddocks, were used. One group was treated subcutaneously with ivermectin (0,2 mg.kg) and the other remained as control group. The spot where feces were naturally evacuated in day 1,3,7,14, and 21 post treatment (dpt) was clearly identify. Fecal pats of each group were sampled at 1,3,7,14,21,30 and 60 days post deposition (dpd). The ivermectin concentration and organic matter percentage were determined and the arthropods present were collected. All the fecal samples of the treated calves presented drug, being samples on 1 and 3 dpt samples those with the higher concentration and higher organic matter content (p<0.05) for the whole experimental period too. Abundance and diversity of arthropods was reduced in samples from treated group (p<0.05). This effect was marked when comparing adults and larvae of nematocera and braquicera diptera and gamasida, actinedida and acaridida acari. Other groups of organisms showed reduced parameters without statistical significance. Also, the highest reductions in abundance and diversity were obtained in fecal samples of treated group at 1, 3 and 7 dpt in agreement with the highest concentration of ivermectin and the highest organic matter percentage. Consistently, the ivermectin eliminatedby cattle treated in autumn affect the faecal natural colonization of dung and delays the faecal degradation in the environment. 10aArgentina10acattle dung10acoprofile arthropods10aecotoxicity10aIVERMECTIN1 aIglesias, L., E.1 aSaumell, C., A.1 aFuse, L., A.1 aLifschitz, A., L.1 aRodriguez, E., M.1 aSteffan, P., E.1 aFiel, C., A.  uhttps://scarabnet.myspecies.info/impacto-ambiental-de-la-ivermectina-eliminada-por-bovinos-tratados-en-otono-sobre-la-coprofauna-y-la