Newborn Feeding

Last updated: March 31, 2026

When is the baby ready for feeding?

Feeding should ideally be started within 6 hours after birth.

If the mother is planning on breastfeeding, the baby should be put to the breast within 30 minutes of birth if possible.

Babies start to exhibit feeding cues at around day 3 – 4 of life. These include rooting, lip-smacking, and bringing their hands to the face when hungry.

  • When is the healthy, term neonate ready to feed?
    • If they are alert and vigorous
    • No abdominal distension
    • Has good bowel sounds
    • Has a normal hunger cry (laryngeal nerve palsy can risk aspiration)

Feeding Frequency and Quantity

Babies should be allowed to feed every 2-5 hrs. Low amounts of feed are started first since the newborn’s stomach is about the size of an olive.

Feeding volume starts around 15-30 mL per feed

Gradually increase to about 48-60mL per feed by day 3 of life.

Feeding frequency

AgeFrequency of feeding
Newbornq 1 – 2 hours
1 monthq 2 – 3 hours
2 – 4 monthsq 4 hours
4 months – one year3 – 4 feeds per day

Average feeding volume per day for the first week

AgeFeeding volume per day
Day 160 ml/kg/d
Day 3100 ml/kg/d
Day 7180 ml/kg/d

Feeding volume

AgeFeeding volume per feed
Day 115 – 30 ml
Day 348 – 60 ml
1 – 2 weeks60 – 90 ml
2 months120 – 150 ml
2 – 3 months150 – 180 ml
4 – 5 months180 – 210 ml
6 months – 1 year210 – 240 ml

Caloric requirements per day

AgeCaloric requirements
First 3 months100 – 120 kcal/day
First year100 kcal/day

Breastfeeding

Breastfeeding should be initiated early.

The mother should nurse both breasts for at least 10 minutes.

If breastfeeding is contraindicated, formula feeding can be used instead.

Forms of breastmilk

Form of breastmilkCharacterisics
Colostrum (day 1 – 5)Thick yellowish milk rich in protein, IgA, lactoferrin and leukocytes. Has a lower fat and carbohydrate component. Provides passive immunity and promotes the passage of meconium. Colostrum also has increased Vitamin A, sodium and chloride.
Transitional milk (day 6 – 14)Gradual shift from colostrum to mature milk as fat, lactose, and water-soluble vitamin content increase while antibody and protein content decrease
Mature milk (from 2 weeks)Has more carbohydrates, fat and potassium. Includes foremilk and hindmilk.
ForemilkMature milk. The first milk at the beginning of a feed. Has high water and lactose but low fat. It hydrates the infant
HindmilkMature milk. Milk at the end of a feed. Has high fat and calories. Promotes satiety and weight gain
  • Benefits of breast milk to the baby
    • Immunological and anti-microbial benefits
    • Cellular and protein components that decrease the risk of gastrointestinal and upper respiratory tract infection
    • Decreases the likelihood and severity of the development of asthma and eczema
    • Improved mother-infant bonding
    • Better neurodevelopmental outcome
  • Benefits of breastfeeding to mothers
    • Lower long-term risk for breast and ovarian cancer
    • Burns calories
    • Prevents post-partum hemorrhage due to the release of oxytocin
    • promotes involution of the uterus
    • acts as a contraceptive
  • Contraindications to breastfeeding
    • Maternal infectious disease, e.g. active Tuberculosis, T-cell lymphotropic virus, and active herpes rash on the breast
    • HIV is a relative contraindication to breastfeeding
    • Illicit drug use
    • Breast cancer
    • Chemotherapy
    • Radiation
    • Baby with galactosemia
  • Situations that are NOT contraindications for breastfeeding
    • Smoking
    • Moderate alcohol use
    • Maternal hepatitis B surface antigen positive
    • Maternal hepatitis C
    • Maternal fever (unless contraindicating infection)
    • Mastitis (encouraged to breastfeed)

Latch score

012Totals
LatchToo sleepy or reluctant; No sustained latch or suck achievedRepeated attempts for sustained latch or suck; Hold nipple in mouth; Stimulate to suckGrasps breast; Tongue down; Lips flanged; Rhythmical sucking
Audible swallowingNoneA few with stimulationSpontaneous and intermittent (< 24 hours old); Spontaneous and frequent (>24 hours old)
Type of nippleInvertedFlatEverted (After stimulation)
Comfort (breast/nipple)Engorged, cracked, bleeding, large blisters or bruises, severe discomfortFilling, reddened/small blisters or bruisesSoft, non-tender
Hold (positioning)Full assist (staff holds infant at breast)Minimal assist (i.e. elevating the head of the infant, or pillows for support); No assist from staff, Mother able to position and hold infant

Diapers

Babies should pass meconium within the first 24 hours.

Meconium appears as a dark, odourless substance that resembles motor oil. Stool colour transitions to tan/brown (formula) or seedy yellow (breastfeeding).

Urine colour should be straw or light-yellow.

Failure to pass meconium in the first 24 hours must be investigated, beginning with an abdominal X-ray.

There should be about 3-4 stools per day and 6-8 wet diapers by the end of week 1.

  • Wet diaper rule for week 1
    • Increase by 1 wet diaper per day for the first week
    • 6-8 wet diapers by the end of week 1
  • Stool colours you should never see
    • Red
      • haematochezia = blood
    • Black
      • Melena = upper gastrointestinal bleed
    • White
      • acholic = no bile

Vitamin and Mineral Supplementation

Breastfeeding babies are need some level of vitamins and supplementation.

Vitamin and Mineral supplementation in newborns

Vitamin and mineralSupplemetation
Vitamin D400 IU/day for the first 2 months of life, unless on Vitamin D-fortified formula
Iron1 mg/kg/day beginning at 4 months of age, unless on an iron-fortified formula
FluorideSupplemented starting at 6 months of age to 3 years if water supply contains less than 0.3 ppm fluoride
Vitamin KRoutinely administered at birth to reduce the risk of hemorrhagic disease of the newborn
FolateThis is given if the baby is taking goat milk
Phosphorus60 – 90 mg/kg/d
Calcium120 – 140 mg/kg/d of elemental calcium

Formulas

Formulas are designed to provide nutrition when breastfeeding is not possible or insufficient.

Types of formulas

TypeCharacteristic
Humanized formulaModiifed cow’s milk that resemb;es human milk
Lactose-free formulaUsed for infants with transient lactose intolerance, e.g. post-viral lactose intolerance
Hydrolysed formula (Hypoallergenic)Includes partially hydrolysed and extensively hydrolysed formula. An extensively hydrolysed formula is used for cow’s milk protein allergy (CMPA)
Amino acid-based formulaUsed for infants with severe CMPA OR multiple food protein intolerance
Soy-based formula (lactose-free and plant-based)Used for galactosemia or CMPA (if IgE-mediated). Not recommended for preterm infants due to phytoestrogens
Preterm formulaHas a higher caloric density, protein, and minerals for preterm or low-birth-weight infants
Thickened formulaContains added rice starch or carob bean gum to reduce reflux

Cow and Goat Milk

Cow’s milk has more protein content than human milk. It contains 80% casein protein, which is more difficult to digest. Neither cow’s nor goat’s milk should be given to children before 1 year of age. If an alternative is needed, a fortified formula or human donor milk is preferred.

  • Effect of cow’s milk on the infant
    • Iron deficiency anaemia: Inhibition of iron absorption due to high calcium and casein. Can also cause occult gastrointestinal bleeding
    • Occult blood loss caused by the heat-labile protein
    • Cow’s milk protein Allergy (CMPA)
  • Effect of goat’s milk on the infant
    • Folate deficiency leading to megaloblastic anaemia.
    • Occult blood loss caused by the heat-labile protein
  • Classic presentation of a baby on goat milk

Weaning

Weaning is the introduction of solid food other than milk in children. Complementary feeding is usually introduced at 6 months of age when the infant matures, and breast milk alone is insufficient to meet the infant’s nutritional needs.

Phases of weaning

PhaseFood
Initial phase (6 – 8 months)Single foods. Start with smooth, pureed food (mashed fruits, iron-fortified cereal). Introduce one food at a time every 3 – 5 days to monitor for allergies. Continue breastfeeding and formula as the main source of nutrition
Transitional phase (8 – 10 months)Textured foods. Introduced soft, mashed, or finely chopped food. Start finger foods (soft-cooked carrots, bread). Encourage self-feeding with a spoon
Advanced phase (10 – 12 months)Family foods. Shift to family meals with modifications, e.g. less salt and soft textures. Include protein sources, e.g. eggs, fish, poultry and dairy. Begin cup drinking instead of bottles
  • Why is weaning started at 6 months of age?
    • Neurological maturation: able to sit and coordinate mastication and swallow non-liquid foods. The extrusion reflex also resolves by 6 months of life
    • Gastrointestinal maturation: able to digest and absorb proteins, fats and carbohydrates
  • Signs of readiness to wean
    • Able to sit upright with support
    • Good head and neck control
    • Shows interest in food (reaches for food, watches others eat)
    • Loss of extrusion reflex (does not push food out of the mouth)
Reference Intervals
Biochemistry
ACTHP: <80 ng/L
ALTP: 5–35 U/L
AlbuminP: 35–50 g/L
AldosteroneP: 100–500 pmol/L
Alk. phosphataseP: 30–130 U/L
α-AmylaseP: 0–180 IU/dL
α-FetoproteinS: <10 kU/L
Angiotensin IIP: 5–35 pmol/L
ADHP: 0.9–4.6 pmol/L
ASTP: 5–35 U/L
BicarbonateP: 24–30 mmol/L
BilirubinP: 3–17 μmol/L
BNPP: <50 ng/L
CRPP: <10 mg/L
CalcitoninP: <0.1 mcg/L
Calcium (ionized)P: 1.0–1.25 mmol/L
Calcium (total)P: 2.12–2.60 mmol/L
ChlorideP: 95–105 mmol/L
CholesterolP: <5.0 mmol/L
VLDLP: 0.128–0.645 mmol/L
LDLP: <2.0 mmol/L
HDLP: 0.9–1.93 mmol/L
Cortisol AMP: 450–700 nmol/L
Cortisol MidnightP: 80–280 nmol/L
CK ♂P: 25–195 U/L
CK ♀P: 25–170 U/L
CreatinineP: 70–100 μmol/L
FerritinP: 12–200 mcg/L
FolateS: 2.1 mcg/L
FSHP: 2–8 U/L ♂; >25 menopause
GGT ♂P: 11–51 U/L
GGT ♀P: 7–33 U/L
Glucose (fasting)P: 3.5–5.5 mmol/L
Growth hormoneP: <20 mu/L
HbA1C (DCCT)B: 4–6%
HbA1C (IFCC)B: 20–42 mmol/mol
Iron ♂S: 14–31 μmol/L
Iron ♀S: 11–30 μmol/L
Lactate (venous)P: 0.6–2.4 mmol/L
Lactate (arterial)P: 0.6–1.8 mmol/L
LDHP: 70–250 U/L
LHP: 3–16 U/L
MagnesiumP: 0.75–1.05 mmol/L
OsmolalityP: 278–305 mosmol/kg
PTHP: 0.8–8.5 pmol/L
PotassiumP: 3.5–5.3 mmol/L
Prolactin ♂P: <450 U/L
Prolactin ♀P: <600 U/L
PSAP: 0–4 mcg/mL
Protein (total)P: 60–80 g/L
Red cell folateB: 0.36–1.44 μmol/L
Renin (erect)P: 2.8–4.5 pmol/mL/h
Renin (recumbent)P: 1.1–2.7 pmol/mL/h
SodiumP: 135–145 mmol/L
TBGP: 7–17 mg/L
TSHP: 0.5–4.2 mU/L
T4P: 70–140 nmol/L
Free T4P: 9–22 pmol/L
TIBCS: 54–75 μmol/L
TriglyceridesP: 0.50–2.3 mmol/L
T3P: 1.2–3.0 nmol/L
Troponin TP: <0.1 mcg/L
Urate ♂P: 210–480 μmol/L
Urate ♀P: 150–390 μmol/L
UreaP: 2.5–6.7 mmol/L
Vitamin B12S: 0.13–0.68 nmol/L
Vitamin DS: 50 nmol/L
Arterial Blood Gases
pH7.35–7.45
PaCO₂4.7–6.0 kPa
PaO₂>10.6 kPa
Base excess±2 mmol/L
Urine
Cortisol (free)<280 nmol/24h
Hydroxyindole acetic acid16–73 μmol/24h
Hydroxymethylmandelic acid16–48 μmol/24h
Metanephrines0.03–0.69 μmol/mmol cr.
Osmolality350–1000 mosmol/kg
17-Oxogenic steroids ♂28–30 μmol/24h
17-Oxogenic steroids ♀21–66 μmol/24h
17-Oxosteroids ♂17–76 μmol/24h
17-Oxosteroids ♀14–59 μmol/24h
Phosphate (inorganic)15–50 mmol/24h
Potassium14–120 mmol/24h
Protein<150 mg/24h
Protein/creatinine ratio<3 mg/mmol
Sodium100–250 mmol/24h
Haematology
WCC4.0–11.0 ×10⁹/L
RBC ♂4.5–6.5 ×10¹²/L
RBC ♀3.9–5.6 ×10¹²/L
Hb ♂130–180 g/L
Hb ♀115–160 g/L
PCV ♂0.4–0.54 L/L
PCV ♀0.37–0.47 L/L
MCV76–96 fL
MCH27–32 pg
MCHC300–360 g/L
RDW11.6–14.6%
Neutrophils2.0–7.5 ×10⁹/L (40–75%)
Lymphocytes1.0–4.5 ×10⁹/L (20–45%)
Eosinophils0.04–0.44 ×10⁹/L (1–6%)
Basophils0–0.10 ×10⁹/L (0–1%)
Monocytes0.2–0.8 ×10⁹/L (2–10%)
Platelets150–400 ×10⁹/L
Reticulocytes0.8–2.0% / 25–100 ×10⁹/L
Prothrombin time10–14 s
APTT35–45 s
Paediatric
Pulse Rate (bpm)
Neonate140–160
Infant <1yr120–140
1–5 years110–130
5–12 years80–120
>12 years70–100
Respiratory Rate (tachypnoea)
0–2 months≥60/min
2–12 months≥50/min
1–5 years≥40/min
>5 years≥30/min
Blood Pressure (mmHg)
Term65/45
1 year75/50
4 years85/60
8 years95/65
10 years100/70
Weight Formulas
3–12 months(a + 9)/2 kg
1–6 years2a + 8 kg
>6 years(7a − 5)/2 kg
Haemoglobin (g/dL)
Term newborn13–20
1 month11–18
2 months10–15
1–2 years10–13
>2 years11–14
MUAC (6 months–5 years)
Obese>17.5 cm
Normal13.5–17.4 cm
At risk12.5–13.4 cm
Moderate malnutrition11.5–12.4 cm
Severe malnutrition<11.5 cm
Developmental Milestones
Social smile1.5 months
Head control4 months
Sits unsupported7 months
Crawls10 months
Stands unsupported10–12 months
Walks12–13 months
Talks18 months
CSF WBC (/mm³)
Term newborn0–25
>2 weeks0–5
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