I have two holstein bottle calves that are approximately 2-2 1/2 months old. I am starting to wean them, they are eating good amounts of grain and some hay.
My question is why are bottle calves weaned so much earlier than calves on the cow? I am sure one factor is the price of milk replacer. My vet told me that calves rumens don't fully develop until they are about 4 months old. So if we take milk replacer away before 4 months of age and feed only grain, hay and grass, then how can they be getting all the protein they need. I am assuming this be why bottle calves are not as productive as calves on cows?
I know this is a silly question, but it has been nagging me for a while and as my calves were twins (not to each other) and were small, one was 62 lbs at about 1 wk old and the other was 74 lbs at about 1 wk, I have been debating on wether or not to wean them now or give them another month with replacer. They are only around 100 lbs each right now.
Opinions and advice are welcome as usual.
My question is why are bottle calves weaned so much earlier than calves on the cow? I am sure one factor is the price of milk replacer. My vet told me that calves rumens don't fully develop until they are about 4 months old. So if we take milk replacer away before 4 months of age and feed only grain, hay and grass, then how can they be getting all the protein they need. I am assuming this be why bottle calves are not as productive as calves on cows?
I know this is a silly question, but it has been nagging me for a while and as my calves were twins (not to each other) and were small, one was 62 lbs at about 1 wk old and the other was 74 lbs at about 1 wk, I have been debating on wether or not to wean them now or give them another month with replacer. They are only around 100 lbs each right now.
Opinions and advice are welcome as usual.