A dairy farm management support system includes an input interface (130), a rules engine (110), a decision engine (120) and an output interface (140) for presenting at least one proposed dairy farm decision to a human user. The rules engine (110) receives a first set of input parameters (Drand), which reflect a decision basis for a particular type of dairy farm decisions. Via the input interface (130), the rules engine (110) also receives user generated input data (Decu), which represent a number of manual decisions in respect of the first set of input parameters (Drand). In response to the first set of input parameters (Drand) and the accompanying user-generated input data (Decu), the rules engine (110) generates a set of decision rules (RDec). Then, the decision engine (120) receives dairy farm data (D) reflecting animal parameters of the same type as the first set of input parameters (Drand), applies the set of decision rules (RDec) to the dairy farm data (D) and derives at least one proposed dairy farm decision of the particular type, which is presented via the output interface (140).
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