Colostrum Management for Dairy Calves

Colostrum is the first milk after calving and the calf's main source of antibodies. What you do in the first hours of life affects health for weeks and months afterward.

Key points

Feed good colostrum as soon as possible, within the first hours of life.
Check quality and discard colostrum from sick cows.
Clean equipment and quick cooling protect calves from germs.
A colostrum bank helps when fresh supply is poor.
Test calves' blood to see whether the program works.

Why colostrum matters

A calf is born with almost no antibody protection of its own. The cow's colostrum carries antibodies that the calf absorbs through its gut in the first hours of life. That absorption drops off quickly, so timing is critical.

Calves that get too little good colostrum, or get it too late, are at higher risk of scours, pneumonia and death. The standard teaching is simple: feed a good quality colostrum as soon as possible after birth and within the first hours of life.

Colostrum management is one of the best returns on time in the whole calf program. A little care in the first hours pays off in fewer sick calves for months afterwards.

Quality, quantity and timing

Quality depends on the cow. Colostrum from first milkings is richer, and older cows that have faced more of your farm's germs often give higher antibody levels. Colostrum that is watery, bloody or from a cow with mastitis should not be used.

Ask your vet, extension specialist or the Dairy Calf and Heifer Association for the target amount and quality measure that fits your calves, such as a colostrum tester, and how to check the calf's blood antibody levels afterwards.

Milk fresh cows soon after calving
Check quality with a tester your vet recommends
Discard colostrum from cows with mastitis or visible blood
Feed as soon as possible after birth
Record the time and amount fed

Feeding methods

Calves can drink from a clean bottle or be fed with an esophageal feeder when they will not drink. The feeder must be used correctly or it can harm the calf. Get hands-on training from your vet before using one.

Never force-feed a calf that is weak or cold without advice. A cold, weak calf needs warming and help first. Handle calves calmly and keep cows and calves safe, since a protective cow can be dangerous.

Always check that the calf is warm and alert before feeding, and let your vet show you the correct way to use any tube feeder so no calf is hurt.

Hygiene and handling

Colostrum can pick up bacteria from the udder, buckets, bottles and bags. Wash udders before milking, use clean containers, and wash and dry all feeding equipment after every use.

Cool or refrigerate colostrum that you do not feed right away. Do not leave it sitting at room temperature. Ask your vet about pasteurizing colostrum, which can lower disease risk where Johne's or other infections are a concern.

Wash and sanitize bottles, bags and feeders
Keep a dedicated colostrum bucket
Cool stored colostrum promptly
Thaw frozen colostrum gently, not in very hot water
Label with cow number and date

Storing and banking colostrum

A colostrum bank of high quality, tested colostrum lets you feed calves quickly when a first-calf heifer has little or poor colostrum. Freeze in clean, labeled containers with cow number and date.

Rotate stock, use the oldest first, and discard anything that has been stored badly. Use colostrum from your own herd where you can, since it matches the germs your calves will meet.

Checking whether it worked

Your vet can run a blood test on calves a day or two after birth to see if enough antibodies were absorbed. Doing this on a group of calves tells you if your program works.

If many calves fall short, review timing, quantity, quality and cleanliness in turn, and make one change at a time.

Record the result of any blood testing by group and by who fed the calves, so you can compare methods fairly.

Common mistakes

Frequent errors include waiting too long, feeding too little, using dirty equipment, mixing colostrum from many cows, and assuming a calf that nursed on its own got enough. Skipping records means you will not know where the weak point is.

When to get help: Ask your vet to train you on esophageal feeding and to test calf blood antibody levels, and call if a calf is weak, cold or will not drink. Follow label or vet-set withdrawal times for any treated cow or calf.

Sources and further reading

Organization homepages are linked so you can search them for current guidance on this topic.

More in Herd Health & Disease Management

← E. coli Mastitis: Emergency Response Checklist Calf Scours: Prevention, Hydration, and Treatment →