Study of the gastrointestinal nematodes resistance in Nelore and crossbreed cattle in the state of São Paulo.
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The resistance to natural infection by gastrointestinal nematodes was compared in 45 male and female cattle of two genetic groups: Nelore (NI, n=28) and "three cross" ~ Angus + X Canchim + X Nelore (TC, n=17). The animais were monitored for 24 months during which they remained in tropical pastures without anti-parasite treatment.
Palabras clave
Resistance, Nelore, beef cattle, gastrointestinal nematodes