A large-scale intervention to introduce orange sweet potato in rural Mozambique increases vitamin A intakes among children and women

作者：Hotz Christine^*; Loechl Cornelia; de Brauw Alan; Eozenou Patrick; Gilligan Daniel; Moursi Mourad; Munhaua Bernardino; van Jaarsveld Paul; Carriquiry Alicia; Meenakshi J V

来源：British Journal of Nutrition, 2012, 108(1): 163-176.

DOI：10.1017/S0007114511005174

• Orange sweet potato
• Randomised effectiveness studies
• Mozambique
• Vitamin A

beta-Carotene-rich orange sweet potato (OSP) has been shown to improve vitamin A status of infants and young children in controlled efficacy trials and in a small-scale effectiveness study with intensive exposure to project inputs. However, the potential of this important food crop to reduce the risk of vitamin A deficiency in deficient populations will depend on the ability to distribute OSP vines and promote its household production and consumption on a large scale. In rural Mozambique, we conducted a randomised, controlled effectiveness study of a large-scale intervention to promote household-level OSP production and consumption using integrated agricultural, demand creation/behaviour change and marketing components. The following two intervention models were compared: a low-intensity (1 year) and a high-intensity (nearly 3 years) training model. The primary nutrition outcomes were OSP and vitamin A intakes by children 6-35 months and 3-5.5 years of age, and women. The intervention resulted in significant net increases in OSP intakes (model 1: 46, 48 and 97 g/d) and vitamin A intakes (model 1: 263, 254 and 492 mu g retinol activity equivalents/d) among the younger children, older children and women, respectively. OSP accounted for 47-60% of all sweet potato consumed and, among reference children, provided 80% of total vitamin A intakes. A similar magnitude of impact was observed for both models, suggesting that group-level trainings in nutrition and agriculture could be limited to the first project year without compromising impact. Introduction of OSP to rural, sweet potato-producing communities in Mozambique is an effective way to improve vitamin A intakes.

• 出版日期2012-7-14