Cria Failure to Thrive: Weakness, Poor Nursing and Slow Growth in Baby Alpacas

Failure to thrive in an alpaca cria usually means the baby is not adapting normally after birth. The biggest early concerns are poor colostrum intake, dehydration, low blood sugar, and infection. Merck notes that normal alpaca birth weight is about 7-11 kg, that crias should be weighed daily during the first month, and that premature crias may fail to stand or lack a suckle reflex. Those babies are at high risk for failure of passive transfer and sepsis.

A weak cria may be struggling because of prematurity or dysmaturity, a difficult delivery, or perinatal hypoxia that leaves the baby dull, weak, or unable to nurse effectively. Some crias also have congenital defects that interfere with breathing, swallowing, or normal digestion. In camelids, examples include choanal atresia, cleft palate, intestinal defects, heart defects, and musculoskeletal problems. Even a cria that looks normal at first can have an internal problem that shows up as poor nursing and slow growth over the next day or two.

Infectious disease is another major cause. A cria that did not get enough colostrum has less immune protection and is more likely to develop septicemia, pneumonia, diarrhea, or navel-related infection. Merck also lists Cryptosporidium as an important neonatal camelid disease, especially in crias under 3 weeks old. Diarrhea can quickly lead to weakness, weight loss, and dangerous fluid loss.

Sometimes the problem starts with the dam rather than the cria. The mother may have low milk production, mastitis, pain, poor mothering, or may not allow nursing long enough for the cria to get what it needs. That is why your vet usually evaluates both the cria and the dam when a baby alpaca is not gaining strength or weight.

See your vet immediately if a cria is too weak to stand, cannot latch or suckle, feels cold, seems mentally dull, has labored breathing, has a swollen belly, has not passed meconium, or is losing weight. The same is true for diarrhea, fever, a weak or absent nursing reflex, pale gums, or any sign that the baby is fading over hours rather than days. In newborn camelids, serious illness can progress quickly.

A same-day vet visit is also warranted if the cria did not nurse well in the first several hours after birth, if you are unsure whether enough colostrum was taken in, or if the baby was born after a hard delivery or appears premature. Merck recommends testing passive transfer at 18-24 hours in camelids, and notes that a total solids refractometer reading above 5.5 g/dL is one screening benchmark, while camelid IgG testing is more specific.

Home monitoring is only reasonable for a bright, active cria that is nursing normally, staying warm, and gaining weight as expected. Even then, daily weights matter. A cria that is not steadily gaining, is spending too much time recumbent, or is repeatedly searching for the udder without nursing effectively should not be watched for long without veterinary guidance.

While you are arranging care, keep the cria warm, dry, and with the dam if safe, and avoid force-feeding unless your vet has shown you how. Weak babies can aspirate milk into the lungs if feeding is rushed or done incorrectly.

Your vet will start with a rapid newborn assessment: temperature, heart rate, breathing, hydration, blood sugar, body weight, nursing ability, and a full physical exam. They will often check for congenital problems that can block normal nursing or breathing, including cleft palate, choanal atresia, limb deformities, abdominal distension, or signs of meconium retention. Because poor milk transfer can be part of the problem, your vet may also examine the dam's udder and milk supply.

Testing often includes blood glucose, packed cell volume/total solids, blood chemistry, and an assessment of passive transfer. Merck states that newborn camelids should receive 10%-15% of body weight in colostrum within 24 hours, ideally by 12 hours, and that crias with inadequate passive transfer may need one or more plasma transfusions. Cornell also highlights cria exams and blood testing for colostral absorption assurance as part of routine camelid neonatal care.

Treatment depends on the cause and how sick the cria is. Supportive care may include warming, oxygen, IV or intraosseous fluids, dextrose for low blood sugar, plasma, tube or bottle feeding plans, and antibiotics if sepsis is suspected. Hospitalized crias may need round-the-clock monitoring, repeated bloodwork, and help with nutrition every few hours.

If your vet finds a structural problem, severe prematurity, or advanced infection, they may discuss referral to a hospital with camelid neonatal intensive care. Cornell specifically notes availability of emergency and neonatal intensive care for camelids, which can be important for crias needing oxygen support, transfusion, imaging, or prolonged hospitalization.

Home care should only happen under your vet's guidance, because weak crias can worsen quickly. The basics are warmth, hydration support, safe feeding, and close monitoring. Keep the cria in a clean, dry, draft-free area with secure footing. If the baby can stay with the dam and nurse safely, that is usually preferred. Bottle-raised crias need careful social management because Merck notes that hand-raised camelids can develop abnormal human-directed behavior later in life.

Your vet may ask you to record body weight at least daily, nursing frequency, urine and stool output, and attitude. Call sooner if the cria becomes colder, weaker, bloated, less interested in nursing, or develops diarrhea or coughing. If your vet has prescribed supplemental feedings, follow the exact volume and schedule provided. Merck advises that bottle-fed crias generally receive 10%-15% of body weight over 24 hours, divided into frequent feedings, often every two hours in very young babies.

Do not guess with medications, selenium products, antibiotics, or dewormers. Weakness in a cria can have many causes, and the wrong treatment can delay needed care. Also avoid forcing milk into a weak baby's mouth, because aspiration pneumonia is a real risk.

Comfort care matters, but it does not replace treatment. A cria that is not nursing well, not gaining, or acting dull needs re-evaluation quickly, even if it seems a little better after warming or one feeding.