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I'm looking for a ballpark number. Obviously fodder can include more than just one crop (e.g., barley/corn or hay/straw), and that's why I am having trouble finding a figure.

Aside, I found that an average lactating dairy cow eats about 50 lbs (source) of fodder per day.

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    I think this is a difficult one to answer as it depends a lot on what type of fodder is used. Also, a lot of fodder is waste from another crop (e.g. straw) - what proportion of the water used to grow that would you allocate to the fodder, rather than the primary crop? – Nick C Jan 3 at 15:43
  • We definitely need more information: What zone are you in? Where do you live on this planet? What kind of soil do you have? Do you own a well or are you on city water? Have you ever grown plants of any kind? – stormy Jan 7 at 2:24
  • Let's say the Midwest. So I'm asking for the majority, a rough number. If straw is the primary composition, then some small percentage of that water. It does not have to be exact, as it's somewhat subjective choosing how much percent. ...Just some reasonable calculation... – Adam Uraynar Jan 8 at 18:27

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