I'm not going to say too much about this thread.
I will say this much tho.......no dairyman that I know culls their cows at 3 years of age. That would mean cullling after only one year of production. Most cows are bred to calve for the first time at 2 years of age....which means at 3 she would only be pregnant with calf number 2 and be in her first cycle of milking. If a cow is culled at 3-5 years it's because of some other issue...not her age.
I will say this much tho.......no dairyman that I know culls their cows at 3 years of age. That would mean cullling after only one year of production. Most cows are bred to calve for the first time at 2 years of age....which means at 3 she would only be pregnant with calf number 2 and be in her first cycle of milking. If a cow is culled at 3-5 years it's because of some other issue...not her age.