To increase your profit/space ratio use the two dairy method:
You needs:
2 Dairies
20 Milk Cows
x Seed Cows

1) Place the milk cows in dairy1 and the seed cows in no dairy leaving dairy2 empty.
2) Wait one day dairy1 should be ready and so should your seed cows.
3) Harvest dairy1.
4) Add a seed cow to dairy2 making it ready.
5) Move all but one milk cow to dairy2 from dairy1.
6) Remove the seed cow from dairy2.
7) Move the last milk cow to dairy2 from dairy1. Harvest dairy2.
9) Continue this proceeds till you are out of seed cows.

Here is the premise in order to do this with one dairy at some point in time you need to have one empty dairy (30 small squares) 20 milk cows(20*4=80 small squares) and x seed cows (x*4= 4x small squares) all placed on the farm at one time. Therefore the working space required for this method is 30+80+4x=110+4x. By adding a second dairy and holding the milk cows in it when they aren’t in the dairy they will be milked in we can cut down the second part of the above space calculation from 80(the space the milking cows occupy when removed from the dairy) to 30 (the space of the second dairy we will use for holding them). Thus the space requirement is dropped to 30+30+4x=60+4x.

1 dairy space required = 110+4x small squares
2 dairy space required = 60+4x small squares
profit per day = (x+1)*val

val is the single harvest value of your milk cows so using 20 pink or green cows as milk cows gives a single harvest value of 20*18=360 so val=360.

1 dairy profit per small square per day = ((x+1)*val)/(110+4x)
2 dairy profit per small square per day = ((x+1)*val)/(60+4x)

so for profit/space efficiency
using 20 pink or green cows as milk cows you only need
4 seed cows to beat olive trees using the 1 dairy method you need 8.
7 seed cows beats swans using the 1 dairy method you need 12.
14 seed cows beats acai using the 1 dairy method you need 25.

First off, lets start with some basic information:

But first first, some basic information to help you understand this basic information:

xx% represent any percentage value, ranging from 0-100, of any single cow.

yy% represents any percentage value, ranging from 0-100, of any DF.

DF stands for dairy farm… but I’m sure you could have figured that out.

Simple enough, so here’s how it works.

An empty DF counts the FIRST cow placed inside as its yy%. So place your highest xx% cow in first.

xx% cow into an empty DF, yy% becomes equal to xx%

xx% cow into yy% DF, DF stays at yy%

Any cow removed from yy% DF, cow resets to 0%. DF stays at yy%

Also note that an empty DF denotes a farm that has NO COWS (0/20), not a farm that is at 0%. This is very important.

Now, on to how we can use this information.

Re-harvesting cows: Harvesting a cow that is out in the open, and then placing it into a 100% DF and harvesting the farm. The cow you just placed in the farm will be harvested again, along with any others in the farm. Thus, re-harvested. Best used for pink, brown, and now, green cows.

This process can be repeated many many many…many times (as many times as you have 100% cows).

For best results, leave several regular cows out in the open so they can mature to 100%, along with any other cows that you plan to re-harvest. These regular cows will be used to reset your DF to 100%, so DONT harvest them! Simply place one of these matured cows into an empty DF, followed by 19 other, preferably 0% cows, and collect. You can then remove all 20 cows from that DF, and place another matured cow inside. Rinse and repeat as desired… Or until your finger falls off.

Yes, this process is a bit slow and click-heavy, but it will pay off. Even the rather expensive green cows (which I strongly suggest your run out and buy 19 of) will quickly pay for themselves with proper dedication to this technique. If you happen to have a whole farm worth of pink or even brown cows, well then, hay, you have everything to gain and nothing to lose.

But wait, there’s more! Aside from the prospect of nearly endless supplies of coins, re-harvested cows also count towards your zoologist ribbon. Every time you collect from a dairy farm, you get 20 harvests towards the ribbon, which adds up quick.

OKAY. hopefully this will help some of you get the most out of these dairy farms, and farm to the fullest. But as long winded as it was, I’m sure there are some details I left out, so I’ll be happy to answer any questions you might have.

Happy farming!