Assessing the Effect of Sustainable Small-scale Egg Production on Maternal and Child Nutrition in Rural Zambia
Animal source foods (ASF), such as meat and eggs, are rich in nutrients critical for growth and development. Yet, for poor children in developing countries, ASF consumption is limited by cost, inadequate caregiver knowledge, and lack of local production and physical availability. The impact of HH- and village-level livestock interventions on household dietary diversity and nutritional status in resource-poor communities is not well established. The objective of this study is to test the effectiveness of local egg production intervention on maternal and child diets and child nutrition status.
This project takes place in the Luangwa Valley, Zambia in partnership with a local non-governmental organization, COMACO. Twenty communities will be assigned to the intervention, and 20 matched communities will be selected as controls. In each intervention community, an egg production facility will be built, owned, and operated by trained COMACO farmers.
Households (HHs) in each community will be sampled twice annually for 1 year pre-intervention (baseline) and 1 year post-intervention to assess dietary diversity and nutritional status. Data analysis will test for a change in these outcomes from baseline in each intervention community compared to the matched control community.
Aperçu de l'étude
Statut
Les conditions
Intervention / Traitement
Description détaillée
The objective of this study is to test the effectiveness of an intervention establishing local egg production on maternal and child diets and nutrition status. The investigators hypothesize that this intervention, combined with appropriate agricultural extension and nutrition education programs, will result in: 1) increased total household, maternal, and child consumption of eggs; 2) improved maternal and child dietary quality; and 3) improved infant/ young child nutritional status.
The investigators will test this hypothesis in the Luangwa Valley, Zambia in partnership with a local non-governmental organization, Community Markets for Conservation (COMACO). The forty study sites are located in four geographic clusters (Chiefdoms) in Eastern Province Zambia. These Chiefdoms are located in two districts: Mambwe (Mnkhanya, Jumbe, and Nsefu Chiefdoms) and Lundazi (Mwanya Chiefdom).
Twenty communities will be assigned to the intervention (egg production), and 20 matched communities will be selected as controls (no intervention). In each intervention community, an egg production facility will be built, each owned and operated by trained COMACO farmers, mostly women. Each group will be provided layer pullets at point-of-lay and layer mash. Facility owners will make all business decisions, retain all profits, and will be responsible for all upkeep costs.
In a repeated cross-sectional study design, indicators of food security, wealth, diet, nutritional status (anthropometrics), and health and wellbeing will be assessed in all egg-producing HHs and in women/child dyads (children aged 6-36 months) residing in the area surrounding each facility or central control point. Data will be collected twice annually for 1 year pre-intervention (baseline) and 1 year post-intervention.
The exposure of interest is living in an egg-producing community. In the primary analysis, the investigators will use hierarchical mixed effects modeling to analyze the effect of the program on each of the outcomes of interest (see Outcome Measures section for details).
Type d'étude
Inscription (Réel)
Phase
- N'est pas applicable
Contacts et emplacements
Lieux d'étude
-
-
Eastern Province
-
Mfuwe, Eastern Province, Zambie
- COMACO
-
-
Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
Accepte les volontaires sains
Sexes éligibles pour l'étude
La description
Inclusion Criteria:
- the HH dwelling is ≤1.5 km from the egg production facility or central control point;
- there is a child 6-36 months of age in the HH; and,
Additionally, all HHs that include a member of the egg production group will be enrolled in the study, regardless of whether or not they meet the above inclusion criteria.
Exclusion Criteria:
- the mother/primary caretaker or head of HH cannot converse with the field staff because of language;
- the mother/primary caretaker or head of HH is unable to give informed consent or complete an interview without assistance; or,
- the child is deformed, disabled, severely ill, or unable to cooperate for anthropometric measures.
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: La prévention
- Répartition: Non randomisé
- Modèle interventionnel: Affectation parallèle
- Masquage: Aucun (étiquette ouverte)
Armes et Interventions
Groupe de participants / Bras |
Intervention / Traitement |
|---|---|
|
Expérimental: Intervention
|
Establishment and support of a community-owned and -operated egg production facility located at a central location in the community
|
|
Aucune intervention: Contrôler
|
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Change in child height-for-age Z-score
Délai: 6, 12, 18, and 24 months after intervention
|
Recumbent length for children < 24 months and standing height for those 24-36 months, with WHO Child Growth Standards as the reference population.
|
6, 12, 18, and 24 months after intervention
|
Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Change in household egg consumption
Délai: 6, 12, 18, and 24 months after intervention
|
7 day recall on total number of chicken or other eggs consumed in the household
|
6, 12, 18, and 24 months after intervention
|
|
Change in maternal egg consumption
Délai: 6, 12, 18, and 24 months after intervention
|
6, 12, 18, and 24 months after intervention
|
|
|
Change in child egg consumption
Délai: 6, 12, 18, and 24 months after intervention
|
6, 12, 18, and 24 months after intervention
|
|
|
Change in maternal dietary diversity
Délai: 6, 12, 18, and 24 months after intervention
|
Measured by Women's Dietary Diversity Score, a 24 hour recall of all foods consumed, organized into 9 food groups
|
6, 12, 18, and 24 months after intervention
|
|
Change in child dietary diversity
Délai: 6, 12, 18, and 24 months after intervention
|
6, 12, 18, and 24 months after intervention
|
|
|
Change in child stunting
Délai: 6, 12, 18, and 24 months after intervention
|
Defined as having a height-for-age z-score < -2.0, with WHO Growth Standards as the reference population.
|
6, 12, 18, and 24 months after intervention
|
Autres mesures de résultats
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Change in household food security
Délai: 6, 12, 18, and 24 months after intervention
|
Measure by Household Food Insecurity Access Scale (HFIAS), Household Hunger Scale (HHS) and/or Months of inadequate household food provisioning (MIHFP)
|
6, 12, 18, and 24 months after intervention
|
|
Change in producer household and poultry incomes
Délai: 6, 12, 18, and 24 months after intervention
|
6, 12, 18, and 24 months after intervention
|
|
|
Change in maternal physical and emotional health
Délai: 6, 12, 18, and 24 months after intervention
|
Measured through a 6-item index adapted from RAND short form
|
6, 12, 18, and 24 months after intervention
|
|
Change in maternal nutritional status
Délai: 6, 12, 18, and 24 months after intervention
|
Measured by mid-upper arm circumference and body mass index
|
6, 12, 18, and 24 months after intervention
|
|
Change in child weight-for-height Z-score
Délai: 6, 12, 18, and 24 months after intervention
|
6, 12, 18, and 24 months after intervention
|
|
|
Change in child weight-for-age Z-score
Délai: 6, 12, 18, and 24 months after intervention
|
6, 12, 18, and 24 months after intervention
|
Collaborateurs et enquêteurs
Parrainer
Collaborateurs
Les enquêteurs
- Chercheur principal: Alexander J Travis, VMD, PhD, Cornell University
Publications et liens utiles
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude
Achèvement primaire (Réel)
Achèvement de l'étude (Réel)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Estimation)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
- 1402004456
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