is there an average amount of protein and fat in milk, and does it change much

Question: is there an average amount of protein and fat in milk, and does it change much
- Keywords:
  fat,
  Milk,
  protein
Asked by pacy49dap to Cathal on 6 Nov 2020.
- Cathal Ryan answered on 6 Nov 2020:
  
  It mostly depends on the breed or type of cow and also how old the cow is. Fat can be anywhere between 3.5% to 4% of the total amount of milk produced while protein will be in the range of 3% to 3.5%. But when a cow gets sick these change and can sometimes be a big indicator that they are sick

Question: is there an average amount of protein and fat in milk, and does it change much