Vertical migration of Haemonchus sp. infectant larvae on Stylosanthes spp. and Brachiaria brizantha (Syn. Urochloa brizantha) cv. Marandu forage

The present work aimed to evaluate the influence of Stylosanthes spp. (Campo Grande© styles) and Brachiaria brizantha cv. Marandu in vertical migration Haemonchus infective larvae, region Uberlândia, Minas Gerais. Seeds were planted 50 pots five liters (20 cm diameter) evenly disposed an area Capim Branco Experimental Farm, Federal University Uberlândia. When both species reached minimum height 20 cm, experimentally contaminated with sheep feces coprocultures. Samplings performed, complete removal vegetal material contained pots, on days one, three, six, 10 14 after contamination. Nematoids recovered from plant samples by thermo hydrotropism, counted under optical microscope identified. For statistical analysis, data analyzed a completely randomized design (DIC) 2X5 factorial scheme (two fodder X 5 collection dates). No effect forage was observed number L3 sp. (p = 0.7790), upper stratum 0.1755) or lower 0.7883) forage, however, there significant decrease found passing days. comparing mean (0.06±0.31 L3) (2.94±0.39) strata, higher larvae < 0.0001). Therefore, studied, plants, preferably pastured animals, remained less contamination tended over