I just drove past a field of cows and there were babies too. The calfs we’re so cute! But it got me thinking… When cows make milk it usually goes to their babies, right? So how is it that we have constant stores of milk and cheese at the supermarket? Do we only get milk from cows who’s calfs didn’t make it (passed away)? Or is it that cows always have milk so it’s no big deal if we take it instead of it going to a calf? Need some dairy farmers to help me out with this one please!
In: 1
Today’s dairy cows produce much more milk, per day, than is physically consumable by calves. Some farms use their own milk to feed calves and the excess is sent to processing for fluid milk, cheese and yogurt, other farms will use milk replacement powder and send all their milk for processing (reasons may be for a more consistent, nutritional product for the calves or due to lack of storage space for fluid milk). Cows only produce milk after having a calf. Cows who are in the 2nd or greater lactation have what is called a dry period which is typically 60 days prior to their due date where they are not milked. A lactation typically lasts 305 days, however, may be longer or shorter depending on health events, timing of breeding, etc. Most calves, in the dairy industry, have milk in their diet for the first 7-9 weeks of age (USA statistic-Penn State Extension) before transitioning to solid feeds to aid in proper rumen development. Hope this helps answer your questions!
Edit to add for credibility: I’ve worked in the dairy industry for 8+ years and have a BSc Animal Science (dairy focused dissertation) and am currently finishing a MSc Ruminant Nutrition.
Latest Answers