The Un Oeuf study: Design, methods and baseline data from a cluster randomised controlled trial to increase child egg consumption in Burkina Faso

Measurement in the study of human exposure to animal feces: A systematic review and audit

BACKGROUND

Human exposure to animal feces is increasingly recognized as an important transmission route of enteric pathogens. Yet, there are no consistent or standardized approaches to measurement of this exposure, limiting assessment of the human health effects and scope of the issue.

OBJECTIVE

To inform and improve approaches to the measurement of human exposure to animal feces, we audited existing measurement in low- and middle-income countries.

METHODS

We systematically searched peer-reviewed and gray literature databases for studies with quantitative measures of human exposure to animal feces and we classified measures in two ways. First, using a novel conceptual model, we categorized measures into three 'Exposure Components' identified a priori (i.e., Animal, Environmental, Human Behavioral); one additional Component (Evidence of Exposure) inductively emerged. Second, using the exposure science conceptual framework, we determined where measures fell along the source-to-outcome continuum.

RESULTS

We identified 1,428 measures across 184 included studies. Although studies overwhelmingly included more than one single-item measure, the majority only captured one Exposure Component. For example, many studies used several single-item measures to capture the same attribute for different animals, all of which were classified as the same Component. Most measures captured information about the source (e.g. animal presence) and contaminant (e.g. animal-sourced pathogens), which are most distal from exposure on the source-to-outcome continuum.

DISCUSSION

We found that measurement of human exposure to animal feces is diverse and largely distal from exposure. To facilitate better assessment of the human health effects of exposure and scope of the issue, rigorous and consistent measures are needed. We recommend a list of key factors from the Animal, Environmental, and Human Behavioral Exposure Components to measure. We also propose using the exposure science conceptual framework to identify proximal measurement approaches.

Sustainability and scalability of egg consumption in Burkina Faso for infant and young child feeding

Introduction

Malnutrition is a significant challenge to the health of women and children in Burkina Faso. Given the critical role of animal source food on the health of infants and young children (IYC), interventions continue to explore the potential for eggs to prevent malnutrition.

Methods

Using data from the Un Oeuf intervention, which significantly increased IYC egg consumption, combined with quantitative and qualitative data from endline and 3-month follow-up, we explore the barriers and facilitating factors to IYC egg consumption and the sustainability and scalability of the intervention.

Results

Child egg consumption was high at follow-up in the Control, Partial, and Full Intervention arms (83.3, 88.2%, and 100, respectively). The Full Intervention arm had the highest mean number of eggs consumed (2.9, 2.6, and 5.7), which reflected a slight reduction from endline (6.2). All participants owned chickens at follow-up (100%), however, flock size varied. The Full Intervention arm had more chickens (mean 8.8) than the Control (5.1) or Partial Intervention (6.2) arms, which was a 50% reduction in below endline (18.5 chickens). Qualitative results indicate that chicken ownership, education about the nutritional value of eggs, and spousal support facilitated IYC egg consumption. Barriers included egg production, cultural taboos, and animal health. Motivational factors reported included the observed improvement in child health, increased availability of mothers' time, and mothers' financial independence. Knowledge sharing within the Full and Partial Intervention groups was widely reported, and the sustainability of IYC egg consumption was reinforced by accountability among mothers and to community leaders, flipbooks distributed during the project, and high motivation.

Discussion

Main findings indicate that mothers who received the full Un Oeuf intervention were able to overcome barriers to feeding their child an egg daily, were able to improve their livelihood, were motivated to continue feeding their child eggs, and saw the addition of eggs into the child's diet as sustainable. Future nutrition sensitive agriculture interventions should consider tailoring this approach for other LMIC contexts. Future research is needed to explore a possible threshold in the number of household chickens necessary to continuously feed a child an egg a day.

Household decision-making, women's empowerment, and increasing egg consumption in children under five in rural Burkina Faso: Observations from a cluster randomized controlled trial

Malnutrition is one of the most long-suffering problems facing women and children across the world—it is endemic to many low- and low-middle income countries and is a leading comorbidity in CU5 mortality. Malnutrition and food security are gendered issues; not only are boys and girls differently affected by these issues, but societal norms and differing roles of women and men are often drivers of these different outcomes. The United Nations seeks to address both malnutrition and gender inequality by reaching its Sustainable Development Goals by 2030. Researchers have shown that women's empowerment is inextricably linked to the nutritional outcomes of children. As one dimension of women's empowerment, intra-household decision-making is an important determinant of child health and nutrition outcomes, as it can determine how resources are allocated within the household. To better understand how gender inequalities within household decision-making may contribute to child nutrition, this study examines the association between household decision-making and the adoption of behavior change to increase chicken egg consumption among infants and young children in Burkina Faso, and explores the relationship(s) between the Un Oeuf project and women's empowerment. This study analyzes data collected during the Un Oeuf cRCT (July 2018–April 2019) and additional data that were collected in conjunction with the Un Oeuf endline household survey in April 2019. Significant relationships were found between women's household decision-making about eggs and child egg consumption at the end of the project. This was true for women who did not have decision-making power at baseline (p = 0.006, OR 3.822) as well as for women who indicted having had that power and sustaining it through endline (p = 0.013, OR 6.662). Results indicate that the Un Oeuf project significantly increased women's household decision-making (p > 0.005, OR 4.045). Finally, significant relationships were found between a woman's overall level of empowerment and household decision-making power surrounding (1) what is done with household eggs (p < 0.005, OR 2.87) and (2) how foods are portioned (p = 0.012, OR 6.712). These findings illustrate the importance and potential of women's decision-making as a point of entry to improving nutritional outcomes through changes in empowerment.

An exploration of cultural influencing factors on dietary diversity in Malagasy children aged 6-59 months

Background

More than 1.7 million children in Madagascar are stunted, with low dietary diversity being a determinant. Although diverse crops are produced in the Vakinankaratra region, it registers the highest stunting prevalence rate nationally. While children’s diets may be influenced by region-specific cultural factors, little is known about this link so far. The aim of this study was to determine the influence of cultural habits on dietary diversity in children between 6 to 59 months in the Vakinankaratra region.

Methods

A mixed method design with a qualitative lead approach was used, including three transect walks, six focus group discussions and 51 semi-structured interviews with caregivers. The interviews contained a quantitative part to assess the four feeding indicators: ‘minimum meal frequency’, ‘minimum dietary diversity’, ‘minimum acceptable diet’ and the consumption of iron-rich foods. Participants were selected by convenience sampling. Data was collected in November 2019 in three communities displaying maximal possible variation.

Results

Subsistence farming with diverse crops and livestock was found to be a common practice. Minimum meal frequency was achieved by 78% of the sixty included children. In total, 45% attained minimum dietary diversity and 40% consumed a minimum acceptable diet. Across the three communities, the range of children attaining a minimum acceptable diet was 25–60%. Older, no longer breastfed children were prone to not achieving a minimum acceptable diet. Although caregivers had a basic idea of important foods for child development, these were often not available to or affordable for them. An effect of cultural events on diet, especially diversity, was found. Whilst for annual events this effect was short-term, the region-specific ceremony of reburying the dead (Famadihana) was found to have a long-term influence on the diet of certain families.

Conclusions

The dietary diversity of children under five in the Vakinankaratra region is influenced by cultural factors like agricultural practices, caregivers’ knowledge of child nutrition, food taboos and a region-specific cultural event. Cultural determinants, especially important traditions that result in significant expenditures, may thus influence the quality of children’s diet and should therefore be considered in future nutrition programmes and research on child malnutrition and stunting.

Integrating the soybean-maize-chicken value chains to attain nutritious diets in Tanzania

In Tanzania, diets are dominated by starchy staple crops such as maize, levels of malnutrition are high and largely attributed to lack of dietary diversity. We employed fuzzy cognitive mapping to understand the current soybean, maize and chicken value chains, to highlight stakeholder relationships and to identify entry points for value chain integration to support nutritious diets in Tanzania. The fuzzy cognitive maps were constructed based on information gathered during household interviews with 569 farming households, followed by a participatory workshop with 54 stakeholders involved in the three value chains. We found that the soybean, maize and chicken value chains were interconnected, particularly at the level of the smallholder farming systems and at processing facilities. Smallholder farming households were part of one or more value chains. Chicken feed is an important entry point for integrating the three value chains, as maize and soybean meal are the main sources of energy and protein for chicken. Unlike maize, the utilization of soybean in chicken feed is limited, mainly due to inadequate quality of processing of soybean grain into meal. As a result, the soybean grain produced by smallholders is mainly exported to neighbouring countries for further processing, and soybean meal is imported at relatively high prices. Enhancing local sourcing and adequate processing of soybean, coupled with strengthening the integration of smallholder farmers with other soybean, maize and chicken value chain actors offers an important opportunity to improve access to nutritious diets for local people. Our method revealed the importance of interlinkages that integrate the value chains into a network within domestic markets.

Behavior Change, Egg Consumption, and Child Nutrition: A Cluster Randomized Controlled Trial

BACKGROUND AND OBJECTIVES

Malnutrition is a significant contributor to child morbidity and mortality globally. Egg consumption has been associated with improved child nutrition yet is rare in rural, resource-poor settings. We test the effects of a culturally tailored behavior change intervention to increase child egg consumption.

METHODS

A 3-arm cluster randomized controlled trial was conducted in rural Burkina Faso with 260 mother-child dyads. Children aged 4 to 17 months from 18 villages were included; those with reported history of malnutrition or egg allergy were excluded. Each child in the full intervention arm received 4 chickens, and mothers received the 10-month behavior change package. Participants in the partial intervention arm received only the behavior change package.

RESULTS

In this analysis of 250 children, the full (β = 4.3; P = 6.6 × 10^-12) and the partial (β = 1.0; P = .02) interventions significantly increased egg consumption. The full intervention also significantly increased poultry production (β = 11.6; 95% confidence interval 8.3-15; P = 1.1 × 10^-5) and women's decision-making about eggs (β = .66; P = .02), and significantly decreased wasting (β = .58; P = .03) and underweight (β = .47; P = .02).

CONCLUSIONS

The culturally tailored behavior change package significantly increased child egg consumption. When coupled with the gift of chickens, the behavior change intervention yielded a greater increase in egg consumption and significantly reduced wasting and underweight. Behavior change strategies to increase egg consumption should be considered among nutrition and health programs in resource-poor settings where poultry is available.

The Un Oeuf study: Design, methods and baseline data from a cluster randomised controlled trial to increase child egg consumption in Burkina Faso

In many low-income countries, such as Burkina Faso, rates of malnutrition are high among children. Research indicates that animal source foods may provide important elements to improve growth and development of young children, especially during periods of rapid development, such as the first 1,000 days of life. The Un Oeuf study is designed to test an innovative behaviour change communication strategy to increase egg consumption in children 6-24 months in Burkina Faso, thereby improving dietary diversity and nutritional outcomes. This 1-year cluster randomised controlled trial tests whether the gifting of chickens by a community champion directly to a child, combined with a behaviour change package of integrated poultry management and human nutrition trainings, can significantly increase egg consumption among children under 2 years in rural communities where egg consumption is very low. The nutrition-sensitive behaviour change package is designed to increase egg consumption through improving livestock production, women's empowerment and food security at the household level. This paper presents a detailed account of the study design and protocol for the Un Oeuf study, alongside a description of the study population. Baseline data show a study population with high rates of malnutrition (stunting 21.6%, wasting 10.8% and underweight 20.4%) and a very low rate of egg consumption-less than 10% among children. Although poultry production is quite common, egg consumption is low reportedly because of cultural norms, including widespread practice of allowing eggs to hatch and a lack of knowledge about the nutritional benefits of egg consumption.