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.
調査の概要
詳細な説明
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).
研究の種類
入学 (実際)
段階
- 適用できない
連絡先と場所
研究場所
-
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Eastern Province
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Mfuwe、Eastern Province、ザンビア
- COMACO
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参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
説明
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.
研究計画
研究はどのように設計されていますか？
デザインの詳細
- 主な目的：防止
- 割り当て：非ランダム化
- 介入モデル：並列代入
- マスキング：なし（オープンラベル）
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
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実験的：介入
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Establishment and support of a community-owned and -operated egg production facility located at a central location in the community
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介入なし：コントロール
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この研究は何を測定していますか？
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Change in child height-for-age Z-score
時間枠：6, 12, 18, and 24 months after intervention
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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
|
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Change in household egg consumption
時間枠：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
時間枠：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 egg consumption
時間枠：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 dietary diversity
時間枠：6, 12, 18, and 24 months after intervention
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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
時間枠：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 stunting
時間枠：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
|
その他の成果指標
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Change in household food security
時間枠：6, 12, 18, and 24 months after intervention
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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
時間枠：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
時間枠：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
時間枠：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
時間枠：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 weight-for-age Z-score
時間枠：6, 12, 18, and 24 months after intervention
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6, 12, 18, and 24 months after intervention
|
協力者と研究者
スポンサー
捜査官
- 主任研究者：Alexander J Travis, VMD, PhD、Cornell University
出版物と役立つリンク
研究記録日
主要日程の研究
研究開始
一次修了 (実際)
研究の完了 (実際)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (見積もり)
学習記録の更新
投稿された最後の更新 (実際)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
本研究に関する用語
その他の研究ID番号
- 1402004456
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栄養失調、子供の臨床試験
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