02275naa a2200265 a 450000100080000000500110000800800410001910000190006024501700007926000090024952014470025865000310170565000310173665000140176765000140178165000170179565000140181265300080182665300300183470000190186470000170188370000190190070000170191977300730193621047742020-01-07       2018    bl uuuu     u00u1 u    #d1 aMEDEROS, A. E.  aPrevalence and Factors Associated with Anthelmintic Resistance in Gastrointestinal Nematodes of CattlebA Systematic Review and Meta-analysis.h[electronic resource]  c2018  aA systematic review and meta-analysis was conducted with the aim to measure the prevalence of anthelmintic resistance (AR) in cattle gastrointestinal nematodes (GIN) and potential management factors associated with development of such resistance. A search algorithm was constructed and a comprehensive search of the primary literature was conducted in: CAB abstracts (1990-2016), Medline (1860-2016), Agricola (1924-2016) and Lilacs (1985-2016). Prevalence estimates were combined through meta-analysis (MA) using the logit prevalence and between-study heterogeneity was quantified. Twenty-nine publications (5 cross-sectional studies; 14 prevalence surveys and 10 field trials) were included in this review. Random effects MA resulted in an overall AR prevalence of 72.0% (95% CI=58.4% to 80.0%). However, a high heterogeneity was observed (I2=55.9%). From studies reporting the nematode genera involved in the AR, Cooperia spp were present in 91.7% of the studies (n=24); Ostertagia sp. in 44.5% (n=22); Haemonchus sp. in 47.8% (n=23); Trichostrongylus sp. in 36.4% (n=22) and Oesophagostomum spp. in 23.8% (n=21). The included cross sectional studies suggested that frequency of treatments, age of cattle and type of management were potential management factors associated with AR in bovine GINs. However, more detailed studies are necessary to fully evaluate management guidelines for implementation of sustainable GIN control strategies.  aAnimal parasitic nematodes  aGastrointestinal nematodes  aParasites  aRuminants  aResistência  aRuminante  aGIN  aResistência parasitária1 aCARRACELAS, B.1 aMINHO, A. P.1 aFERNÁNDEZ, S.1 aSÁNCHEZ, J.  tJournal of Veterinary Medicine and Healthgv. 2, n. 2, p. 2-8, 2018.