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El impacto productivo de los nematodos gastrointestinales (NGI) sobre los de pequeños rumiantes es conocido a nivel mundial. Las infestaciones por NGI constituyen una limitante de alto impacto en la producción de rumiantes y las perdidas comprendidas por este problema sanitario varían desde reducciones subclínicas en la ganancia de peso hasta la muerte de animales con altas cargas parasitarias. El objetivo de este trabajo es presentar los resultados de un test de eficacia a campo utilizando una combinación comercial de Abamectina + Derquantel y del Moxidectin en cabras lecheras naturalmente infestadas con NGI en el Valle de Lerma, provincia de Salta. El ensayo se llevó a cabo en la Unidad Tambo Caprino de la Estación Experimental Agropecuaria Salta del INTA. Para la evaluación de eficacia de la droga en estudio, se realizó el test de reducción de conteos de huevos. En los coprocultivos pre-tratamientos se pudo observar una gran prevalencia de Trichostrongylus spp. (71%). seguido de Teladorsagia spp. (21%) y Haemonchus spp. (8%). En cuanto a los resultados del TRCH, en el GDQ se observaron valores del 100% de PRCH, mientras que en el GMX se observó un PRCH de 95,5 %, donde la eficacia para Haemonchus spp. y Teladorsagia spp. fue del 100% y para Trichostrongylus spp. del 81,1%.Los resultados observados en este trabajo permiten concluir que en las condiciones de campo en donde fue llevado a cabo el TRCH, la combinación Derquantel-Abamectina posee una alta eficacia contra los géneros presentes. Efficacy of combining Abamectin-Derquantel and Moxidectin in dairy goats naturally infected by gastrointstinal nematodes in Valle de Lerma, Argentina. The productive impact of gastrointestinal nematodes (NGI) of small ruminants are known worldwide. Infestations by NGI constitute a limiting factor in the production of ruminant and the losses included by this sanitary problem vary from subclinical reductions in weight gain to the death of animals with high parasite loads. The objective of this work is to present the results of an efficacy trial using a commercial combination of Abamectin + Derquantel and Moxidectin in dairy goats naturally infested with NGI in the Lerma Valley, Salta province. The test was carried out in the Dairy Goat Unit of the Salta Agricultural Experiment Station of INTA. In the pretreatment stool cultures, a high prevalence of Trichostrongylus spp. (71%). followed by Teladorsagia spp. (21%) and Haemonchus spp. (8%) was observed. Regarding the results of the TRCH, in the GDQ values of 100% of PRCH were observed, while in the GMX a PRCH of 95.5% is shown, where the efficacy for Haemonchus spp. and Teladorsagia spp. was 100% and for Trichostrongylus spp. 81.1%. The results observed in this work allow us to conclude that under the field conditions where TRCH was carried out, the Derquantel-Abamectin combination has high efficacy against the genera present. Instituto de Investigación Animal del Chaco Semiárido Fil: Olmos, Leandro Hipolito. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Investigación Animal del Chaco Semiárido. Área de Investigación en Salud Animal; Argentina Fil: Olmos, Leandro Hipolito. Universidad Católica de Salta. Facultad de Ciencias Agrarias y Veterinarias; Argentina Fil: Martinez, Gabriela Marcela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Salta; Argentina Fil: Alfaro, Rodolfo Jose. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Salta; Argentina Fil: Diaz, Juan P. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentina Fil: Suarez, Victor Humberto. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Investigación Animal del Chaco Semiárido. Área de Investigación en Salud Animal; Argentina

Se llevó a cabo una encuesta transversal en 54 unidades productivas familiares (UF) y 5 tambos caprinos comerciales (TC) en diferentes ecorregiones de Salta y Jujuy. El objetivo del trabajo fue estudiar la asociación entre la seroprevalencia de anticuerpos anti Toxoplasma gondii y aquellos factores relacionados con las unidades productivas y sus caprinos. Se procesaron sueros mediante la técnica de Inmunofluorescencia Indirecta (n= 629) y por ELISA indirecto (n=619). Para el análisis estadístico de las variables se utilizó el chi-cuadrado, el Odds Ratio (OR) y la regresión logística. De las 59 majadas visitadas el 67,8% de ellas tuvo al menos un caprino seropositivo, mostrando disímil presencia entre las UF (66,7%) y los TC (80%). La prevalencia general fue del 18,2% (95% IC: 15,9-20,6%). Los factores de riesgo significativamente asociados a una seroprevalencia de T. gondii mayor a un 20% de los caprinos muestreados fueron un porcentaje de gatos mayor al 1,1% en relación con el total de cabras en servicio (OR 5,26; 95% IC: 1,62-17,1) y la práctica del ordeñe (OR 13,03; 95% IC: 2,19- 80,3). Los presentes resultados muestran que las infestaciones por T. gondii en las majadas caprinas de Salta y Jujuy son importantes y ameritan profundizar los estudios., A cross-sectional survey was performed in 54 family farm units (FU) and 5 dairy commercial farm (CF) from different regions of Jujuy and Salta provinces, with the aim of studying the association between the seroprevalence against Toxoplama gondii antibodies in goats flocks and risk factors related to the farm units and the goats management. Sera were processed by the indirect fluorescent antibody test IFAT (n = 629) and indirect ELISA (n = 619) techniques. The Chi-square, Odds Ratio (OR) and logistic regression were used for the statistical analysis of the variables. Of the 59 visited flocks, 67.8% of them had at least one seropositive goat, showing differences between FU (66.7%) and CF (80%). The general prevalence was 18.2% (95 % CI: 15.9-20.6%). The risk factors significantly associated to T. gondii prevalence greater than 20% of the sampled goats would be a percentage of cats greater than 1.1% in relation to the total number of mating goats (OR 5.26; 95% CI: 1.62-17.1) and the milking practice (OR 13.03; 95% CI: 2.19- 80.3). The present results show that infestations by T. gondii in the goat flocks of Salta and Jujuy are important and deserves further studies., Realizou-se um estudo transversal em 54 unidades familiares de produção (UF) e 5 tambos comerciais (TC) (propriedades leiteiras) em diferentes ecorregiões de Salta e Jujuy, com o objetivo de estudar a associação entre a soroprevalência de anticorpos anti Toxoplasma gondii em caprinos e fatores relacionados às unidades produtivas e seus animais. Os soros foram processados pela técnica de Imunofluorescência Indireta (n = 629) e ELISA indireto (n = 619). Para a análise estatística das variáveis foram utilizados o Qui-Quadrado, Odds Ratio (OR) e regressão logística. Dos 59 rebanhos visitados, 67,8% deles apresentavam pelo menos um caprino soropositivo, apresentando presença diferente entre a UF (66,7%) e os TC (80%). A prevalência geral foi de 18,2% (IC95%: 15,9-20,6%). Os fatores de risco significativamente associados a uma soroprevalência de T. gondii maior que 20% das cabras amostradas foi uma porcentagem maior que 1,1% em relação ao número total de cabras em serviço (OR 5,26; 95% IC: 1,62-17,1) e a prática de ordenha (OR 13,03; 95%IC: 2,19-80,3). Os presentes resultados mostram que as infestações por T. gondii nos rebanhos caprinos de Salta e Jujuy são consideráveis e merecem aprofundar os estudos., Facultad de Ciencias Veterinarias

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 Keywords:Gastrointestinal nematode; Dairy goat; Condensed tannin; Production

In order to evaluate the anthelmintic effect of condensed tannins (TC), a study was made to evaluate its effect on gastrointestinal nematodes (NGI) in goats and sheep. Two groups of 6 goats and 4 sheep grazing Lucerne were assigned; one group without treatment (GST) was daily supplemented with ground corn (500 g), while the other group (GTC) with the same diet and the inclusion of 25 g of TC. Faecal nematode egg counts (epg) and coprocultures were made every two weeks for 3 months. In addition, FAMACHA technique and body condition score (CC) were recorded. The epg were similar in the first three samplings (mean= 507.4 GTC y 351.4 GST), then the GST epg decreased being lower than those of the GTC, but without significant differences (p