Gradual weaning of calves reduces stress, increases profits

Stress increases risk of contracting a respiratory disease upon entering feedlot.

September 20, 2021

2 Min Read
weaned calves.jpg
Eric Bailey

Weaning at home reduces stress and improves profit in calves, according to University of Missouri Extension beef nutritionist Eric Bailey.

Unfortunately, more than 55% of calves are weaned on the trailer on the way to the sale barn, USDA National Animal Health Monitoring System surveys have shown.

Calves face many types of stress in their early days, including weaning, castration, vaccinations, diet changes and transportation. Stress increases their risk of contracting a respiratory disease upon entering the feedlot. Bailey said 17% of calves entering the feedlot show signs of respiratory disease. This costs the beef industry $800 million annually.

Producers can reduce some of that stress by weaning at home, which Bailey calls a “tried-and-true” method.

A couple of “at home” techniques:

• Nose clips in the nostril, which prevent the calf from sucking and encourage them to eat hay and feed concentrates. After the nose clip is removed, calves are physically separated from their dams. This low-stress method costs about $2.25 per nose flap.

• Fence line weaning puts calves on one side of the fence and mama cows on the other side for five to seven days after weaning. Good fences help in this method. Fence line weaning improves performance and helps calves bawl less. Calves that are abruptly removed from their mother’s bawl twice as much as gradually weaned calves.

Calves that don’t eat well after weaning face risk for illness, generally 14-28 days after weaning. Producers can encourage drinking and eating by placing physical barriers within the pen so that calves must walk past water and feed sources.

Bailey also suggested a method to adapt weaned calves to new feed. On the day of weaning, offer calves 1% or more of their body weight in high quality grass hay. The next day, offer hay at 1% of body weight and begin to offer 0.5-1% of body weight in grain. Put the grain under hay in the bunk to get calves to eat down to the new feed. Putting a new feed on top may cause calves to avoid it, he said.

Increase the concentrate to 1 pound (dry matter basis) each day until cattle are eating 2.5% of their body weight in concentrate. Discontinue hay between days three and five.


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