Grafting Calves to Nurse Cows: Successful Adoption Techniques

A Good Graft Solves Two Problems at Once, But It Takes the Right Setup and Patience

When a cow loses her calf or a calf loses its mother, grafting (convincing a cow to adopt a calf that isn't her own) can solve two problems at once. A successful graft saves the labor and expense of bottle-raising while giving the calf the natural nutrition and care of a cow. But cattle have strong maternal instincts that include recognizing and rejecting "foreign" calves. Success depends on picking the right situation, using effective techniques, and having patience.

This guide covers when grafting works best, proven adoption methods, and how to troubleshoot common problems.

How Cows Identify Their Calves

Cows rely on several cues to recognize their own calves, with smell being the most important. A cow learns her calf's scent within hours of birth and uses it as the primary identification tool. She also recognizes specific vocalizations, relying on sound as a strong secondary cue. Sight plays a lesser role initially but develops over days, and maternal memory becomes strong once the bond forms.

The Bonding Timeline

Why Cows Reject Foreign Calves

From an evolutionary standpoint, cows reject foreign calves to conserve resources for their own genetics. An "imposter" calf is essentially a competitor. Rejection behaviors include pushing the calf away with her head, kicking at it, aggressive butting, and refusing to let the calf nurse. Recognizing these signs early helps you decide whether to persist with a grafting attempt or change your approach.

When Grafting Is Appropriate

Ideal Situations

The best grafting outcomes happen when the orphan calf is newborn or very young, the cow has strong maternal instinct, and there's a reasonable size match between the cow and the orphan.

Candidate Cows

Candidate Calves

Size Considerations

Large calves may be rejected by smaller cows, and small calves may struggle to nurse tall cows. Some flexibility is possible, but a closer size match gives you a better chance of success.

Grafting Techniques

Method 1: Skinning the Dead Calf (Most Effective)

• Skin the dead calf: Remove the hide in one piece if possible, including legs and head if feasible. Keep scent glands (flank area) intact and work quickly to preserve freshness.
• Prepare the hide: Cut holes for the orphan's legs. You may need to adjust size, and baling twine works well to secure it.
• Apply to orphan calf: Place the hide over the orphan like a jacket, secure it around legs and belly, and make sure the calf can move and nurse.
• Introduce to cow: Bring the orphan to the cow and allow her to smell the calf thoroughly. Watch her response and be patient.
• Monitor adoption: Stay with the pair initially and watch for acceptance signs. Keep the hide on for 2-3 days and remove it once the cow is clearly bonded.

Method 2: Scent Transfer Without Full Skin

If you don't have the full hide available, you can use just the hide from the flank and groin area, which contains concentrated scent glands. Tie it around the orphan's midsection. Placental membranes also work well if available; rub the fluids especially around the orphan's tail and head. As a third option, mix manure from the cow onto the calf and apply milk from the cow onto the calf's body.

Method 3: Restraint and Time (Force Adoption)

This approach involves confining the cow in a headgate or stanchion, allowing the calf access to nurse, and preventing the cow from kicking with hobbles if needed. Repeat multiple times daily.

The drawback is that some cows never accept through this method alone. Gradually release the cow to assess bonding, keep sessions positive to avoid stressing her, and understand that this approach takes the longest of any method.

Method 4: Commercial Products

Commercial adoption sprays and strong-smelling livestock powders can help confuse a cow's scent recognition. Apply the product heavily to the orphan calf first, then apply it to the cow's own body (particularly her nose area). Introduce the pair and monitor their interaction closely.

Method 5: Delayed Introduction

Some cows become more accepting as udder pressure builds. An uncomfortable full udder may make the cow want a calf, so introducing the orphan when she's uncomfortable can work in your favor. If a cow is still in "adoption mode" after losing her calf, capitalize on those fresh maternal hormones by bringing the orphan promptly.

Step-by-Step Grafting Process

Preparation

• Assess the situation: How long since the cow lost her calf? How old is the orphan? Is the cow showing maternal behavior?
• Choose your method: Use skinning if the dead calf is available, scent transfer if not, and have a backup plan with restraint ready.
• Prepare equipment: Have a headgate or confined area ready, hobbles if needed, and grafting supplies (hide, spray, etc.).

Introduction

• Confine the cow: Secure her in a headgate or small pen to reduce her ability to harm the calf.
• Introduce the calf: Approach from behind if possible, since that mimics natural presentation. Let the cow smell thoroughly and watch for acceptance or rejection signs.
• Allow nursing attempt: Guide the calf to the udder if needed and protect it from kicks. Successful nursing is the first milestone.

Monitoring

Signs of acceptance include the cow allowing nursing without restraint, "talking" to the calf with soft vocalizations, and showing protective behavior. Warning signs include the cow walking away repeatedly, showing aggressive posture, or the calf being afraid of the cow.

Transition to Pasture

Before turning the pair out, you want at least 24-48 hours of positive interaction and a calf that is nursing confidently. Once in the pasture, check frequently (3-4 times the first day), watch for rejection behaviors, and have a backup plan if rejection occurs.

Troubleshooting Common Problems

Cow Won't Let Calf Nurse

This can stem from udder pain (check for mastitis) or a previous negative association. Check udder health first, then try more time in restraint. Brief sedation is a veterinary option for extreme cases.

Cow Accepts Then Rejects

Sometimes a cow's maternal hormones decline, or she simply becomes suspicious of the foreign calf over time. More time in a confined setting often helps, though you may need to restart the process from the beginning.

Calf Won't Nurse the New Cow

The cow may be intimidating, or the teat size and shape may be different from what the calf is used to. Brief hunger can motivate a reluctant calf, and manually guiding the calf to the teat helps it get started.

Cow Is Aggressive

When a cow is aggressive toward the grafted calf, there's a real risk of injuring both the calf and the handler. She may not be a good candidate for grafting. Don't risk serious injury; you may need to bottle raise instead.

Special Situations

Grafting Twins

When a cow has twins and isn't producing enough milk for both, graft the weaker twin to a foster cow. Cows rarely raise twins well under range conditions, so splitting them up gives both calves a better shot.

Grafting to Cows That Lost Twins

A cow that lost twins has plenty of milk available for an orphan, making her an excellent candidate. Monitor that both calves (if you graft two) are getting adequate nutrition.

Grafting Older Calves

Older calves may not know how to nurse from a cow, and the cow is less likely to accept them. Plan for an extended restraint period and possibly partial bottle supplementation initially until the pair settles in.

Grafting to First-Calf Heifers

First-calf heifers are often more nervous and may take longer to accept an orphan. Use a very gradual introduction, and select heifers with a calm temperament for the best results.

Record Keeping

Document Grafting Attempts

Analyzing Results

Over time, your records will tell you which cows make good foster mothers, which cows should not be used for grafting, and what your overall success rate looks like. This data helps you make faster, better decisions during the next calving season.

Grafting vs. Bottle Raising: Decision Guide

Choose Grafting When:

Choose Bottle Raising When:

Equipment and Supplies

Grafting Kit

• Sharp skinning knife
• Baling twine or ties
• Commercial adoption spray
• Clean towels/rags
• Headgate or stanchion access
• Hobbles
• Confined pen (8x10 feet ideal)
• Fresh bedding
• Water and hay for cow

Facilities

Your grafting area needs the ability to restrain the cow's head, protection for both the handler and the calf, and easy access for monitoring. A small pen with a headgate or stanchion is ideal.

Tips for Success

Timing Is Everything

Act quickly when a cow loses her calf. Fresh maternal hormones help enormously, and the longer you wait, the harder the graft becomes. If you know a cow lost her calf this morning, get an orphan to her today.

Patience Pays

Some adoptions take days rather than hours. Don't give up too quickly, but also don't over-intervene. Check frequently, give the pair time together, and let the cow come around on her own terms.

Match Appropriately

Size matters, temperament matters, and some cows are simply better foster mothers than others. Use your records from past seasons to identify your best candidates.

Have a Backup Plan

Not every graft succeeds. Be prepared to bottle raise if needed, and know when to stop trying. A calf losing days of nutrition while you attempt a failed graft is worse than starting bottle feeding early.

The Bottom Line on Calf Grafting

Grafting is an art as much as a science. Success depends on understanding cow behavior, picking the right candidates, using effective scent transfer techniques, and having patience. When it works, grafting saves you a lot of labor and gives the orphan calf ideal nutrition from a cow that needs a calf. When it doesn't work, know when to cut your losses and move to bottle raising. Build your skills over time, and track what works in your specific operation.

Related Resources

• Raising Orphan Calves
• Newborn Calf Assessment
• Colostrum: The Critical First Hours
• Post-Calving Cow Care

References

• Beef Cattle Research Council. "Grafting Calves Onto Cows." beefresearch.ca
• University of Nebraska-Lincoln. "Grafting or Fostering Calves." beef.unl.edu
• Oklahoma State Extension. "Grafting Orphan Calves." extension.okstate.edu
• Texas A&M AgriLife Extension. "Calf Adoption Techniques." agrilifeextension.tamu.edu
• South Dakota State Extension. "Grafting Beef Calves." extension.sdstate.edu
• Grandin, T. "Understanding Cattle Behavior for Better Handling." Colorado State University.