Mixing Cow and Goat Milk for Infant Nutrition: Is It Safe? - Pediatrics

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Mixing cow and goat milk for infant nutrition can be a topic of concern for many parents, especially when considering the nutritional needs of a growing infant. In your case, your son is currently 4.5 months old and is on a formula called "優生A+." It’s important to approach the introduction of any new food or milk with caution, particularly for infants who are still developing their digestive systems.

First, let’s address the idea of mixing cow and goat milk. Both cow and goat milk can provide essential nutrients such as protein, calcium, and vitamins. However, they are not recommended as primary sources of nutrition for infants under one year of age. The American Academy of Pediatrics (AAP) advises that infants should be exclusively breastfed or formula-fed for the first six months of life. After six months, solid foods can be introduced, but milk (whether cow or goat) should not replace breast milk or formula until the child is at least one year old. This is primarily because cow and goat milk do not contain the right balance of nutrients that infants need, and they can also be harder for infants to digest.

Regarding your concern about your son's weight, it is essential to monitor his growth closely. A weight of 6.5 kg at 4.5 months, especially considering he was born at 2.5 kg, may indicate that he is not gaining weight as expected. Weight gain is a crucial indicator of an infant's health and development. If he has not gained weight in the last month, it would be wise to consult with a pediatrician to evaluate his growth patterns and overall health. They may suggest adjustments to his feeding regimen or further assessments to ensure he is receiving adequate nutrition.

As for introducing rice water (米湯) to your son, it is generally recommended to wait until around six months of age before introducing any solid foods or liquids other than breast milk or formula. If you choose to prepare rice water, the typical ratio is indeed about 1:10 (one part rice to ten parts water), but this should only be done once he is developmentally ready for solids. Rice water can be soothing for the digestive system, but it should not replace his primary source of nutrition, which should still be breast milk or formula.

In summary, mixing cow and goat milk is not advisable for infants under one year. Focus on ensuring that your son is getting enough formula and consult with a pediatrician regarding his weight and growth. Once he reaches six months, you can gradually introduce solid foods, including rice water, while continuing to provide adequate formula or breast milk. Always prioritize professional medical advice tailored to your child's specific needs.