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.
研究概览
详细说明
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).
研究类型
注册 (实际的)
阶段
- 不适用
联系人和位置
学习地点
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Eastern Province
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Mfuwe、Eastern Province、赞比亚
- COMACO
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-
参与标准
资格标准
适合学习的年龄
接受健康志愿者
有资格学习的性别
描述
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.
学习计划
研究是如何设计的？
设计细节
- 主要用途：预防
- 分配：非随机化
- 介入模型：并行分配
- 屏蔽：无（打开标签）
武器和干预
参与者组/臂 |
干预/治疗 |
|---|---|
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实验性的：干涉
|
Establishment and support of a community-owned and -operated egg production facility located at a central location in the community
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无干预：控制
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研究衡量的是什么？
主要结果指标
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
|
Change in child height-for-age Z-score
大体时间：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.
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6, 12, 18, and 24 months after intervention
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次要结果测量
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
|
Change in household egg consumption
大体时间：6, 12, 18, and 24 months after intervention
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7 day recall on total number of chicken or other eggs consumed in the household
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6, 12, 18, and 24 months after intervention
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Change in maternal egg consumption
大体时间：6, 12, 18, and 24 months after intervention
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6, 12, 18, and 24 months after intervention
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|
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Change in child egg consumption
大体时间：6, 12, 18, and 24 months after intervention
|
6, 12, 18, and 24 months after intervention
|
|
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Change in maternal dietary diversity
大体时间：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
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6, 12, 18, and 24 months after intervention
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Change in child dietary diversity
大体时间：6, 12, 18, and 24 months after intervention
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6, 12, 18, and 24 months after intervention
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Change in child stunting
大体时间：6, 12, 18, and 24 months after intervention
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Defined as having a height-for-age z-score < -2.0, with WHO Growth Standards as the reference population.
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6, 12, 18, and 24 months after intervention
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其他结果措施
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
|
Change in household food security
大体时间：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)
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6, 12, 18, and 24 months after intervention
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Change in producer household and poultry incomes
大体时间：6, 12, 18, and 24 months after intervention
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6, 12, 18, and 24 months after intervention
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|
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Change in maternal physical and emotional health
大体时间：6, 12, 18, and 24 months after intervention
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Measured through a 6-item index adapted from RAND short form
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6, 12, 18, and 24 months after intervention
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Change in maternal nutritional status
大体时间：6, 12, 18, and 24 months after intervention
|
Measured by mid-upper arm circumference and body mass index
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6, 12, 18, and 24 months after intervention
|
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Change in child weight-for-height Z-score
大体时间：6, 12, 18, and 24 months after intervention
|
6, 12, 18, and 24 months after intervention
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|
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Change in child weight-for-age Z-score
大体时间：6, 12, 18, and 24 months after intervention
|
6, 12, 18, and 24 months after intervention
|
合作者和调查者
调查人员
- 首席研究员：Alexander J Travis, VMD, PhD、Cornell University
出版物和有用的链接
研究记录日期
研究主要日期
学习开始
初级完成 (实际的)
研究完成 (实际的)
研究注册日期
首次提交
首先提交符合 QC 标准的
首次发布 (估计)
研究记录更新
最后更新发布 (实际的)
上次提交的符合 QC 标准的更新
最后验证
更多信息
与本研究相关的术语
其他研究编号
- 1402004456
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