The first milk substitute for giant panda cubs was developed in 1988 based on limited
data about giant panda breast milk and that of certain types of bear. Mixtures of other
formulas have also been fed to cubs at some facilities. However, they are not of
sufficient nutritional quality for promoting growth in panda cubs. Here, we report
analysis of giant panda breast milk and propose new milk substitutes for cubs, which were
developed based on the results of our analysis. The Chengdu Research Base of Giant Panda
Breeding obtained breast milk samples from three giant pandas. Up to 30
ml of breast milk were collected from each mother by hand. Then, the
milk samples were frozen and sent to Nihon University. The levels of protein, fat,
carbohydrates, ash, moisture, vitamins, minerals, total amino acids, fatty acids, lactose
and other carbohydrates in the milk were analyzed. The breast milk samples exhibited the
following nutritional values: protein: 6.6–8.5%, fat: 6.9–16.4%, carbohydrates: 2.5–9.1%,
ash: 0.9–1.0% and moisture: 67–83%. We designed two kinds of milk substitutes based on the
data obtained and the nutritional requirements of dogs, cats and rodents. The nutritional
composition of the milk substitutes for the first and second stages was as follows:
protein: 38 and 26%, fat: 40 and 40%, carbohydrates: 13 and 25%, ash: 6 and 6% and
moisture: 3 and 3%, respectively. In addition, the substitutes contained vitamins,
minerals, taurine, docosahexaenoic acid, lactoferrin, nucleotides and other nutrients.