That depends on the stage of lactation. Soon after giving birth the cow will produce as if providing all the nutrition for her calf. So within just a few weeks she will reach her peak in production.
Some of our cows give as much as 50 litres a day. She will give us more in the morning than in the afternoon and curiously, her afternoon milk will have a higher milk fat. More.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.