n Stockfarm - Sheep for weed control : new approach to herbicide resistance management - feeds & grazing

Volume 7 Number 4
  • ISSN : 2221-7304



Utilisation of weeds by browsers and grazers is determined by several factors, including the type of animal, weed type, alternative food plants and the environment. Although the nutritive value of a weed may be high, it may be toxic or unpalatable due to chemicals produced by the plant. Livestock and game might not feed on a particular weed, even though it is not toxic, because the animal has not ‘learned’ to ingest it and prefers other vegetation. Animals are forced to ingest plants that would normally be avoided or rarely utilised when drought and overgrazing cause significant reduction in plant biomass and species diversity.

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