| anthelmintic resistance in gastrointestinal nematodes from grazing beef cattle in campeche state, mexico. | production of beef cattle is one of the most important economic activities in mexico. however, anthelmintic resistance (ar) has affected animal productivity. the aim of this study was to determine the presence of ar in gastrointestinal nematodes (gin) of beef cattle in candelaria municipality of campeche state, mexico. sixty-five-month-old beef calves were selected for the faecal egg count reduction test (fecrt) and the inhibition of egg hatch (ieh) assay. these parameters were determined using ... | 2015 | 25876195 |