Issue title: Stock Sprint - Stock 7
 Issue body: "Reply: This requires an update to the genetic parameters/assumptions in the underlying model and that is beyond our scope. The dairy farm example was selected partly because it was the only grazing trial in which we had access to intake information, 
 Comments: 
 Comment 0: Added a memo to the milk production validation graphs with the wording: "The LUDF dataset was selected partly because it was the only grazing trial in which we had access to intake information, and partly it was thought that dairy cows would stretch the capability of the feeding standards. It is evident from the observed versus predicted milk production data that the former is consistently higher than the latter. Hence, it is likely that to better match observed and predicted requires an update to the genetic parameters/assumptions in the underlying model and that is beyond our scope."
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