Neonatology · Nutrition · Practical review
Choosing a good formula is only one step: first decide whether the neonate can be fed safely, match the method to its swallowing ability, then use tolerance and the weight curve to guide the plan.
Key points. Maternal milk remains the reference when it is available and safe. When supplementation or replacement is needed, use a species-specific milk replacer and reconstitute it exactly as directed. Before every feed, assess body warmth, alertness, breathing, suck–swallow coordination, abdomen and weight. A cold, dyspnoeic, profoundly weak neonate or one without effective swallowing must not be force-fed orally. Commercial products vary markedly: calculate a plan from the energy density of the actual product and adjust it from growth and tolerance rather than copying a universal volume.
For breeders and owners. This cannot replace examination of the neonate, dam/queen and litter. Individual volumes, orogastric tube feeding and treatment of hypoglycaemia or dehydration require a trained veterinarian.
1. Supplement the cause, not merely a small body size
Artificial feeding may be complete for an orphan, temporary while the mother is treated, or supplementary when milk production is genuinely inadequate. It may also be needed with an oral defect, very large litter, poor teat access, maternal disease or inadequate weight gain.
| Situation | Check first | Aim |
|---|---|---|
| One neonate fails to gain | Identify it, observe nursing, examine mouth/palate, temperature, breathing and competition. | Correct an individual problem without unnecessarily reducing maternal nursing. |
| Several fail to gain | Examine mother, mammary glands, discharge, maternal behaviour, nest and weight distribution. | Detect hypogalactia, mastitis, maternal disease or an environmental problem. |
| Orphan or unavailable mother | Consider a safe, compatible foster; organise heat, elimination, hygiene and monitoring as well as meals. | Replace as many maternal functions as possible. |
| Low birth weight | Compare with breed and litter; assess prematurity, malformation and reduced vitality. | Prevent decompensation through close monitoring and tailored support. |
Avoid the “more milk” reflex. Poor growth may reflect inadequate intake, but also hypothermia, infection, pain, malformation, aspiration, diarrhoea, heart disease or maternal illness. Blindly increasing feeds can hide the cause and create overload or regurgitation.
2. Before feeding: confirm that the digestive route is safe
The neonate must be warm, alert and coordinated enough to protect its airway. Hypothermia and hypoxia impair sucking, swallowing and gastrointestinal motility. No single temperature value replaces clinical observation.
| Assessment | Compatible with supervised oral feeding | Stop / veterinary review |
|---|---|---|
| Breathing | Regular, quiet, pink mucous membranes. | Effort, apnoea, noise, cough, cyanosis or milk at nostrils. |
| Alertness and posture | Wakes, crawls, maintains a sternal position. | Flaccid, unresponsive, cannot hold head or has seizures. |
| Suck–swallow | Rhythmic latch with pauses and visible swallowing. | No suck, pooled milk, choking or regurgitation. |
| Temperature | Age-appropriate trend with improving clinical state. | Cold and weak or overheated/dehydrated; stabilise first. |
| Abdomen | Soft, non-painful, fills gradually. | Tense, painful, asymmetric or distended before feeding. |
3. Choose a species-specific, traceable milk source
Canine and feline milk are energy-, protein- and fat-rich, and their composition changes during lactation. Plain cow’s or goat’s milk is not a complete substitute: energy density, proteins, minerals, essential fatty acids and lactose load do not reproduce puppy or kitten needs.
Heinze and colleagues analysed 15 canine milk replacers and five dog-milk samples. No product matched all measured nutrients; energy density varied nearly threefold, 14 of 15 products contained less calcium than dog milk and DHA was undetectable in 12 of 15. This study does not rank today’s brands—formulations may have changed—but shows why powders cannot be exchanged volume for volume.
| Option | Place | Limitations |
|---|---|---|
| Maternal/expressed milk | Reference when the mother is healthy and collection is clean. | Limited supply; assess mastitis, maternal drugs and disease. |
| Same-species foster | Physiological nutrition and maternal care. | Check health and behaviour; infectious risk and, in cats, blood-group context. |
| Puppy/kitten milk replacer | First choice when replacement is required. | Composition and density vary; follow product-specific mixing and storage. |
| Plain cow’s/goat’s milk | At most a very short emergency bridge under professional advice. | Incomplete; lactose-free does not make it nutritionally complete. |
| Home recipe | Emergency bridge only when no suitable product is immediately available. | Imbalance, contamination and concentration errors; validate with a veterinary nutritionist. |
Emergency bridge: two small homemade food batches
A species-specific puppy or kitten milk replacer remains the first choice. When none is immediately available, the bases below may provide a very brief bridge after advice from the on-call veterinarian, for a warmed, alert neonate that can suck and swallow normally. They are adapted from the historical table on this website, credited to Dr Géraldine Blanchard, veterinary nutrition specialist, in the work with Drs Xavier Lévy and Bernard-Marie Paragon.
These are incomplete food bases for only a few feeds while obtaining a dedicated milk replacer. They do not replace colostrum, treatment of a sick neonate or a complete diet throughout lactation. Their tolerance and efficacy have not been established in a clinical trial; no universally safe duration can be guaranteed.
| Ingredient | Puppy base | Kitten base |
|---|---|---|
| Whole unsweetened evaporated milk, undiluted | 54 g | 26 g |
| Sterilised dairy cream, 30 % fat | 12 g | No added cream |
| Table sugar | 2 g | 1 g |
| Cooked whole eggs, shells removed, weighed and blended very finely | 100 g, approximately two eggs depending on size | 50 g, approximately one egg depending on size |
| Drinking water | 30 ml | 20 ml |
These are batch quantities, not a meal or a daily allowance. They correspond to one fifth of the food ingredients in the original table. Do not add water to reach an arbitrary final volume. Do not use sweetened condensed milk, plant drinks, eggshell, human supplements or sugar products containing sweeteners.
Preparation: use fresh ingredients and clean utensils; fully cook the eggs, then blend all ingredients to a very fine homogeneous mixture. The original used soft-boiled eggs: full cooking here is a hygiene adaptation, not a newly validated nutritional formula. If lumps remain or the mixture does not pass appropriately through the teat, do not enlarge the hole or force-feed; obtain suitable formula and veterinary advice promptly. This preparation is not intended for improvised tube feeding.
Refrigerate immediately in a clean closed container; warm only the required portion in a water bath, discard any portion that has contacted the mouth and discard the remaining batch no later than the next day. Stop and seek an examination for coughing, milk from the nose, regurgitation, abdominal distension, diarrhoea or reduced vitality. Meal volume and distribution depend on the patient: never feed the whole batch at once.
Why is this not a complete milk replacer? The historical table also included specific mineral and vitamin supplements, different for puppies and kittens. Their range and composition have changed; present products must not be substituted gram for gram. Without a recalculated formulation, calcium/phosphorus, vitamins, trace elements, essential fatty acids and, in kittens, taurine are not assured. Obtain species-specific formula without delay; prolonged homemade feeding requires a properly formulated diet.
A practical point from the neonatal lecture
Suck strength and digestive capacity must be assessed together: abdomen, discomfort, stool, and gastric filling and motility when ultrasound is indicated. Loss of suck requires stabilisation and examination before oral feeding. Oral rehydration solutions or glucose support are not complete nutrition; bridge mixtures for a sick patient require an individual veterinary plan.
4. Preparation, temperature and hygiene
- Weigh powder and measure water exactly as the manufacturer directs; do not concentrate feeds to accelerate growth.
- Prepare small labelled batches and follow the stated refrigeration and discard times.
- Warm in a water bath to approximately body temperature (often 35–37 °C), mixing gently. Microwaves may create hot spots.
- Test teat flow before feeding: formula must not run freely.
- Wash, rinse, dry and disinfect bottles, teats and equipment appropriately; never share between litters without cleaning.
- Discard saliva-contaminated formula and anything with uncertain appearance, smell, storage or cold chain.
| Error | Possible consequence | Prevention |
|---|---|---|
| Too much powder | High osmolality, diarrhoea, constipation, dehydration, overload. | Use the product measure precisely. |
| Too much water | Low energy and mineral intake despite large volume. | Do not dilute “for hydration” without prescription. |
| Too cold | Poor acceptance, cooling, slower gastric emptying. | Check formula and neonate temperature. |
| Too hot | Oral/oesophageal burns and feeding aversion. | Mix and test every feed. |
| Stored too long | Bacterial multiplication, diarrhoea or sepsis. | Small batches, clean container, manufacturer’s limits. |
5. Select the method by neonatal competence, not speed
| Method | For whom? | Advantage | Main risk |
|---|---|---|---|
| Assisted maternal nursing | Can suck but is outcompeted or tires easily. | Physiological; supports lactation and bonding. | Assuming intake from latch alone; verify swallowing and weight. |
| Bottle | Alert neonate with coordinated suck–swallow. | Allows some self-regulation. | Excess flow, squeezing, poor posture, aspiration. |
| Small feeding sponge/adapted teat | Selected neonates that reject a standard teat but swallow normally. | May help controlled intake. | Fragment, contamination, uncontrolled flow; limited clinical evidence. |
| Oral syringe | Only controlled micro-amounts in a neonate that is swallowing, with advice. | Precise measurement. | Delivery faster than swallowing; never push against absent coordination. |
| Orogastric tube | Veterinary indication when oral feeding is unsafe or ineffective. | Measured enteral intake without requiring a suck. | Misplacement, aspiration, trauma or overload; training essential. |
6. Bottle feeding: sternal posture and neonate-controlled flow
- Place the puppy or kitten on its abdomen on a towel, head neutral. Never feed it on its back like a human infant.
- Offer the teat without forcing the mouth open. It must be soft, intact, clean and appropriately sized.
- Let the neonate suck; do not squeeze the bottle to speed delivery. Flow should stop when sucking stops.
- Observe nostrils, lips, swallowing, breathing and abdomen throughout. Stop at the first sign of struggle.
- Afterwards keep it briefly sternal, gently clean the face, return to warmth, and document tolerance and actual intake within the prescribed plan.
A bottle is not a vitality test. A very weak neonate may appear to swallow while milk pools in the mouth or enters the airway. If coordination is uncertain, stop and obtain an examination.
7. Orogastric tube feeding: useful, never improvised
Tube feeding may save a neonate unable to suck, but a tube placed in the trachea or displaced during administration may be fatal. Tube size, measured length, position checks, volume, rate and frequency must be taught on the patient by a veterinarian. A video demonstration or measurement copied online is not a substitute.
A tube does not treat hypothermia, hypoxia or sepsis. If the neonate is unstable, stabilisation and diagnosis take priority. Coughing, respiratory difficulty, regurgitation, unusual resistance or sudden clinical change requires immediate cessation and reassessment.
Clinical video for verified veterinary professionals. Dr Xavier Lévy demonstrates neonatal tube feeding at CRECS (French narration). It complements hands-on patient training; it does not replace examination, equipment selection or position checks. Open the professional video.
8. Build an individual plan—there is no magic universal volume
A single volume per 100 g is misleading because formulas have different energy densities and neonates differ in age, digestive state, maternal intake and gastric capacity. The plan integrates current weight and trajectory, reconstituted-product energy, actual maternal intake, meal distribution, tolerance and comorbidities.
| Decision | Clinical question | Adjustment |
|---|---|---|
| Daily requirement | Total replacement or supplement? What energy density? | Veterinary calculation from the actual product, not a generic volume. |
| Fractionation | Age, size, vitality, suck and gastric emptying? | Smaller, more frequent feeds when tolerance is limited; no catch-up bolus. |
| Progression | Recently stabilised, premature or underfed? | Cautious introduction and frequent reassessment. |
| Maternal contribution | How much is truly obtained at the teat? | Use observation and weight; reduce supplement when nursing is effective. |
| Response | Weight, behaviour, stool, hydration, abdomen, breathing? | Investigate poor response before simply increasing intake. |
Detailed volumes, frequencies and energy calculations belong in a veterinary-only technical sheet after professional access is verified. For the public, the safest framework is: exact product directions + validated plan + daily weighing + prompt examination for any deviation.
9. Monitor every feed and the week-long trajectory
| Each feed | Each day | Mother and litter |
|---|---|---|
| Alertness, temperature if at risk, suck/swallow, breathing, regurgitation, abdomen before and after. | Weight at a comparable time, trend rather than isolated value, urine/stool, skin, umbilicus, hydration, activity. | Maternal behaviour, mammary glands, discharge, appetite, temperature if indicated; curves for every littermate. |
A precise scale and reliable individual identification are essential. Weight gain does not exclude every problem, but plateau or loss is an early warning. Large breeds, extremely small neonates and heterogeneous litters require breed- and litter-relative interpretation.
When specialist input saves time. Poor gain, aspiration events, persistent diarrhoea, several affected neonates or uncertain lactation call for a focused assessment of neonate, mother and nest. Selecting the right tests early often avoids costly and hazardous trial-and-error.
10. Common problems: correct the cause, not only the milk
| Observation | Possible causes | Action |
|---|---|---|
| Refuses to suck | Hypothermia, hypoxia, fatigue, infection, pain, unsuitable teat, oral defect. | Do not force; assess warmth, mouth and breathing and seek advice. |
| Diarrhoea | Over-concentration, overfeeding, abrupt change, contamination, infection, intolerance. | Audit preparation/storage, hydration and weight; neonatal diarrhoea needs prompt review. |
| Constipation/scant stool | Low intake, dehydration, concentrated mix, poor stimulation, digestive anomaly. | Do not improvise oils/laxatives; reassess plan and patient. |
| Bloating/regurgitation | Excess flow or volume, swallowed air, cold formula, poor motility, obstruction, sepsis. | Stop catch-up feeding; assess stability and abdomen; emergency if pain, dyspnoea or decline. |
| Milk from nose/cough | Fast flow, posture, cleft palate, dysphagia, misplaced tube. | Stop immediately; oral and respiratory examination; monitor aspiration pneumonia. |
| Poor gain despite large intake | Low energy density, mixing error, losses, infection, malabsorption, weighing error. | Do not increase blindly; audit product, measurements, curve and disease. |
11. Transition and weaning: follow development, not a fixed date
Weaning begins when the young animal can lap, teeth emerge and motor coordination permits exploration of a highly digestible growth food. Transition gradually from semi-liquid to thicker texture, offer small fresh portions and water, maintain hygiene and continue weighing. Puppies often begin introduction at approximately three to four weeks, with complete weaning later; kittens follow a comparable but individual course.
A sick or premature neonate, an animal with a cleft palate, one recovering from aspiration pneumonia or exclusively tube-fed may require a different timetable and rehabilitation. Abruptly reducing milk without measuring solid-food intake risks an energy deficit.
12. Practical questions
Is goat’s milk better than cow’s milk?
How do I know whether the teat hole is correct?
Must the neonate be woken at fixed times?
Can a missed feed be made up at the next one?
Should the abdomen be very round after feeding?
Is a syringe safer than a bottle?
When is tube feeding needed?
Targeted neonatal plan
When a neonate cannot be fed simply
Dr Xavier Lévy consults at CRECS near Toulouse and at Bordeaux Sud. French- or English-language input can also be coordinated with the primary veterinarian when remote support is appropriate.
13. References and evidence level
Personal sources consulted: Dr Xavier Lévy, Neonatal diseases in dogs and cats (2026); Neonatal disease from diagnosis to treatment — Salzburg 2026; Neonatal resuscitation: tube feeding and intraosseous catheter; earlier chapter Artificial feeding of the neonate. Recipes co-authored with Drs Géraldine Blanchard and Franck Paragon and older dosages were not republished as content attributable solely to Dr Lévy.
1. Heinze CR, Freeman LM, Martin CR, Power ML, Fascetti AJ. Comparison of the nutrient composition of commercial dog milk replacers with that of dog milk. J Am Vet Med Assoc. 2014;244:1413–1422. DOI 10.2460/javma.244.12.1413; PMID 24871064. Analytical study of five dog-milk samples and fifteen products; demonstrates variability but does not compare current brands clinically.
2. Jacobsen KL, DePeters EJ, Rogers QR, Taylor SJ. Influences of stage of lactation, teat position and sequential milk sampling on the composition of domestic cat milk. J Anim Physiol Anim Nutr. 2004;88:46–58. DOI 10.1046/j.1439-0396.2003.00459.x; PMID 19774762. Feline milk composition with a limited two-product comparison.
3. Wang C, Zhu Q, Li Y, Guo J, Li L. Alterations in the Intestinal Microbiome and Metabolic Profile of British Shorthair Kittens Fed with Milk Replacer. Animals. 2024;14:2346. DOI 10.3390/ani14162346; PMID 39199879. Exploratory study of twelve kittens, six per group, using one experimental formula; insufficient to establish universal safety.
4. Lawler DF. Neonatal and pediatric care of the puppy and kitten. Theriogenology. 2008;70:384–392. DOI 10.1016/j.theriogenology.2008.04.019; PMID 18554707. Foundational clinical review predating recent evidence.
5. Münnich A, Küchenmeister U. Causes, diagnosis and therapy of common diseases in neonatal puppies in the first days of life. Reprod Domest Anim. 2014;49 Suppl 2:64–74. DOI 10.1111/rda.12329. Clinical review; practical recommendations draw mainly on experience and heterogeneous evidence.
6. Mila H, Piel M, Guiraud F, Mugnier A, Grellet A, et al. Artificial feeding in newborns: practical management by dog and cat breeders. Poster, EVSSAR, Milan, 2022. Bibliographic record and indexed abstract consulted in 2026; full text was inaccessible, so no unpublished figure is reproduced.
Critical reading. Puppy- and kitten-specific evidence remains limited and is dominated by compositional studies, small cohorts and expert reviews. No trial validates one volume, frequency or technique for every neonate. Individual clinical and weight monitoring therefore remains central.