Milk Discoloration May Be a Short-Lived Problem
Dr. Ken McMillan
Inflammation or trauma can cause a hemorrhage in the udder, leading to discolored milk. I have seen this several times during my 38 years of practicing, and I bet it happens a lot more than we realize since we rarely see the milk of beef cows after calving unless you have a problem. I think this happens more with heavier milkers or those whose bags fill early.