Calving Day: Close-Up Cows, Dystocia and Knowing When to Call the Vet

Calving is the start of the whole milking cycle. A cow that calves easily, passes her placenta, eats and begins to milk is on track for a profitable lactation. A hard calving can cost a calf, injure a cow and set off a chain of problems that follows her for months. Most calvings need no help at all. The skill is in recognizing which ones do and acting early enough to matter.

This guide covers the general sequence and decisions. It is not a replacement for your veterinarian's protocols, which should be built for your herd, and it does not teach hands-on assistance. If you want to find calving and herd health workshops near you, agriculture.directory can help you find agriculture events in your area.

Pregnancy Checks and Dates

A cow is confirmed pregnant by a veterinarian or trained technician, often by ultrasound or palpation some weeks after breeding, with rechecks later to catch pregnancy losses. Holstein gestation is typically about 280 days, with normal variation of a week or more either side, so calving dates are an estimate. Write the due date in your records and plan to move the cow, usually to a dry cow group and then a close-up group, in time. The transition cow guide explains the feeding and management of those last weeks, which strongly affect calving ease and early lactation health.

The Calving Pen

• Clean and dry. A calving area contaminated with manure is where newborn calves pick up disease. Remove soiled bedding between cows.
• Roomy. Crowding increases stress and the chance of injury.
• Safe footing. A slippery floor risks a cow going down.
• Easy observation. You should be able to watch without disturbing the cow.
• Separate from sick animals. Do not calve cows where sick cows have been.

Signs That Calving Is Near

As calving approaches, many cows become restless, separate from the group, show a relaxed pelvic area and a swollen, filled udder, and may have a clear mucus discharge. The first stage of labor, which may last hours, involves contractions that you may not notice beyond restlessness. The second stage begins when the water bag appears, and the calf is delivered. Observe from a distance, and check at intervals set by your protocol, so you notice a delay without interfering with a normal birth.

What Normal Looks Like

In a normal birth the calf comes front feet first, with the soles of the feet pointing down and the nose resting on top of the legs. Progress should be steady once the feet appear. If you see the soles pointing up, a tail or a single foot, or if the head is not visible with the feet, the calf may be in an abnormal position and the cow needs help from someone who knows how to correct it, usually a veterinarian.

When to Step In

A calving that has stalled is called dystocia. There is no single rule that fits every cow, and extension and veterinary sources give guidelines that vary. A common pattern is to check a cow or heifer that has been in active second stage labor, with the water bag or feet visible and hard straining, for about an hour with no progress. Protocols differ on timing for mature cows and first-calf heifers. Decide with your veterinarian on your own time limits, write them down and post them in the calving area. Call the veterinarian right away if you see abnormal presentation, if you cannot tell what is happening, if the cow stops pushing, or if you think the calf is too big. Waiting too long raises the risk of a dead calf and an injured cow.

Assisting a Delivery

Assistance should be done by trained people. General principles that appear in extension guidance include washing and using clean gloves and lubricant, checking position before pulling, pulling only in time with the cow's contractions and in the natural arc of the birth canal, and stopping if there is resistance, since forcing a calf that is stuck can injure the cow and calf. Use only clean, disinfected equipment, and use calf-pulling devices according to training and instructions. If in doubt, call the veterinarian early.

Care After Birth

1. Clear the calf's nose and mouth and check breathing. Stimulate a weak calf by rubbing it.
2. Dip the navel in a navel disinfectant according to your protocol.
3. Get colostrum into the calf quickly. The colostrum guide explains how much and when.
4. Move the calf to a clean, dry, draft-free spot.
5. Watch the cow. She should stand, eat, drink and pass the placenta. A retained placenta, commonly defined as not passed within about a day, along with fever or poor appetite, needs a veterinarian's attention.
6. Keep records. Note calving date, ease, calf sex and weight and any treatment.

Safety for People

A calving cow can be unpredictable and protective, and calves and fluids can carry germs that infect people, including bacteria that cause scours. Use gloves, wash hands and keep children away from calving and from calves with diarrhea. Have a plan for working alone, and let someone know when you are checking cows at night.

Where to Learn More

Dairy extension programs such as Penn State Extension dairy and University of Minnesota Extension dairy publish calving, transition cow and herd health resources, and many offer hands-on calving workshops.

Reducing Dystocia Risk

• Breed heifers when they are big enough. See the heifer growth guide.
• Choose sires for calving ease with heifers. Evaluations of calving traits are available for bulls, as the guide to genomic testing discusses.
• Feed to avoid overconditioned cows. Excess fat makes calving harder.
• Keep cows comfortable and unstressed through the dry period.

Common Mistakes

• Waiting too long to call. Delay costs calves.
• Pulling too hard or too soon. Check position first.
• A dirty calving pen. It starts disease at birth.
• Skipping records. Patterns show problems.
• Working alone with no plan. Tell someone.

Farm.fm's page on dairy covers dairy news and background, and for a laugh, see farm.fm's piece on a dairy farm where cows demand better working conditions than the humans get.