Studies on the quality of breast milk during 23 months of lactation in a rural community of the Ivory Coast

Am J Clin Nutr. 1979 May;32(5):1159-73. doi: 10.1093/ajcn/32.5.1159.

Abstract

Milk samples from 33 women from a rural area of the Ivory Coast were analyzed once a month. In two longitudinal studies covering 23 months of breast feeding, analyses of lipid components and protein were performed. The compositions remained virtually constant over 23 months of lactation except for a decrease of protein concentration during the first 6 months, a rising trend of myristic acid (14:0) and a falling trend of oleic acid (18:1). Infants were growing well on breast milk with nothing else for the first 5 months, but thereafter their growth curves were no longer satisfactory as judged by Western standards: weight for age (percentage of Harvard standards) decreased from 5 to 10 months of age to level off thereafter at a value of 80%. The mothers' weight for height remained constant. In a cross-sectional study, additional determinations were performed: aminograms, lactose, calories, iron, copper, manganese, zinc, and vitamin E. All data were compared with those of the literature. Lauric (12:0) and myristic (14:0) acids were higher, total lipids and polyunsaturated fatty acids lower than those published for Western countries. Plasma composition of the mothers showed lower levels of albumin, lipids, and polyunsaturated fatty acids as well as blood hemoglobin. Possible correlations between various variables such as milk composition, plasma levels, and anthropometry were calculated and discussed.

PIP: In order to investigate the breast milk composition over a prolonged period of lactation milk samples from 33 women from a rural area of the Ivory Coast were analyzed once monthly. Analyses of lipid components of protein were performed in 2 longitudinal studies covering 23 months of breast feeding. The composition stayed essentially constant over the 23 months of lactation except for a decrease or protein concentration during the first 6 months, a rising trend of myristic acid and a falling trend of oleic acid. For the first 5 months the infants grew well on breast milk alone, but thereafter their growth curves were unsatisfactory as judged by Western standards. The mothers' weight for height stayed constant. In a cross-sectional study, additional determinants were performed: aminograms, lactose, calories, iron, copper, manganese, zinc, and vitamin E. All data were compared with those of the literature; lauric and myristic acids were higher, and total lipids and polyunsaturated fatty acids were lower than those published for Western countries. Plasma composition of the mothers showed lower levels of albumin, lipids, and polyunsaturated fatty acids as well as blood hemoglobin.

MeSH terms

  • Aging
  • Anthropometry
  • Blood Proteins / metabolism
  • Body Height
  • Body Weight
  • Cote d'Ivoire
  • Female
  • Growth*
  • Humans
  • Infant
  • Infant Nutritional Physiological Phenomena*
  • Infant, Newborn
  • Lactation
  • Lipid Metabolism*
  • Milk Proteins / metabolism*
  • Milk, Human / metabolism*
  • Pregnancy
  • Rural Population
  • Time Factors

Substances

  • Blood Proteins
  • Milk Proteins