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Complementary feeding practices, dietary diversity, and nutrient composition of complementary foods of children 6–24 months old in Jimma Zone, Southwest Ethiopia

Abstract

Background

Mothers and caregivers typically feed infants according to their culture, purchase power and level of awareness with no due diligence to nutritional quality of the diet. Scientific evidence on nutritional adequacy of predominant complementary foods is critical for planning and prioritising interventions. The purpose of the current study was to evaluate the quality of complementary foods and the optimality of complementary feeding practices in Southwest Ethiopia.

Methods

In this cross-sectional study, a stratified multistage sampling procedure was used to sample 433 children, 6–24 months old. A semi-structured questionnaire was used to collect demographic, socio-economic and dietary data. Dietary diversity score was measured using a 24-h dietary recall. Six customary complementary food types were assayed for proximate composition, energy and mineral density using standard methods. Adequacy of the complementary foods in nutrients for complementary feeding purposes was assessed as a ratio between actual composition and recommended composition of complementary foods.

Results

Only 16.1% of the children get the minimum dietary diversity. The children were reported to be fed with cereals & grains (68.8%), discretionary calories (53.6%), protein-rich foods (44.6%), oils and fat (40.5%), vegetables (38.5%), dairy products (17.9%) and fruits (28.1%). The sampled foods contained 4.3–24.4%, 0.9–8.5%, 8.2–11.9%, 27.9–162.6 Kcal/100 g, 168.4–250.4 mg/100 g, 1.8–4.1 mg/100 g and 22.5–42.4 mg/100 g of total carbohydrate, crude fat, protein, energy content, calcium, zinc and iron, respectively. All the complementary food samples predominantly fed to children were not composed of adequate protein, fat, carbohydrate, energy and calcium as recommended for complementary feeding purposes. However, most of the complementary foods are composed of adequate iron and zinc.

Conclusions

The nutrient density and diversity of complementary foods of 6–24-month-old children in the study area were found to be sub-optimal. Upgrading the nutritional composition of the starchy complementary foods should be of highest priority to improve nutrition of the infants and young children.

Background

Complementary feeding refers to supplementing breastfeeding with feeding children aged between 6 and 24 months with a wide range of foods [10]. The period between 6 and 24 months of age is a time of nutritional vulnerability because during this period, nutrients especially micronutrients and energy obtained only from breast milk will not be sufficient to meet the requirements of the child [22]. Ensuring adequate nutrition during the period between 6 and 24 months of age is a major global health priority [10].

Among the immediate causes of undernutrition among children is consumption of too few nutrients [5]. In most low-income countries, including Ethiopia, the beginning of growth faltering coincides with the start of complementary feeding; age-specific malnutrition rates generally increase until about 24 months of age and then level off [20]. The sharp rise in the occurrence of stunting in young children from the age of 6 months is usually associated with suboptimal complementary feeding practices [9]. As children younger than 24 months old do not consume a sufficient amount of food to cover the high nutrient needs for growth and development, food given to them should be of high nutrient density [10].

Theoretically, infants should receive the most nutrient-dense diet in the family. Infants in low-income countries, however, are typically fed with nutrient-poor foods like thin porridges [10]. Complementary foods should contain high-biological value protein, furthermore, vitamins and minerals [25].

The National Nutrition Strategy (NNS) of Ethiopia gives considerable emphasis for nutrition of children younger than 2 years old in particular as nutrition received during this period influences how the children develop, grow and learn now or later. There is no documented evidence of overall complementary feeding practices and adequacy of the complementary foods in nutrients in Jimma Zone. This information is critically needed to be able to judge and plan the mechanisms to upgrade traditional diets. Therefore, this study aimed to evaluate the complementary feeding practices, dietary diversity and nutrient adequacy of complementary foods of children 6–24 months old in Jimma Zone, Southwest Ethiopia.

Methods

Area and subjects

This study was conducted in Jimma Zone, Southwest Ethiopia. The study area is year-round green but unfortunately characterised by household food insecurity [4]. Three districts were purposively selected based on their agricultural production; Omo Nada, Dedo and Mana are cereal, vegetable and cash crop producer areas, respectively.

This study is a component of a more prominent cross-sectional study which assessed the nutritional status and associated factors among children younger than 2 years old. The study population for the original research included all children younger than 2 years old in the study area. A multistage stratified sampling procedure was used to sample 558 children who were 0–24 months old [14]. For the current study, only those children 6–24 months old were included.

Data collection

Data were collected from mothers or caregivers of the infants and children using face-to-face interviews using a semi-structured questionnaire.

Variables

The variables were categorised as dependent and independent variables. The dependent variable was the dietary diversity score of the 6–24-month-old children. The independent variables included several socio-economic and demographic factors like family composition, household size, educational level attained by mothers and fathers, the occupation of mothers and fathers, the wealth of the household and education or training received on health and nutrition. Additionally, the infant- and young child-feeding (IYCF) practices were also assessed.

Measurements

Diet diversity

A single 24-h dietary recall was used to obtain data on dietary diversity. Dietary diversity was assessed with a scale of seven food groups namely cereals and grains, vegetables, fruits, dairy products, oil and fat, protein-rich foods and discretionary calorie foods. Dietary diversity score (DDS) was found to be optimal when a child is fed greater than four food groups per day [23].

Nutrient composition of complementary foods

First, the complementary foods fed to 6–24-month-old children were identified from the questionnaires. Complementary food samples (25 g) were collected from 217 households. The collected food samples were labelled and stored at − 18 °C and eventually transferred to Jimma on the same date of collection. Based on the ingredients used for making the complementary foods, 6 assays were identified. The gross sample was then reduced in size and homogenised to create the laboratory sample [19]. The samples were then analysed for proximate composition (protein, fat, carbohydrate, moisture, ash and fibre), energy content, mineral (iron, zinc, calcium and phosphorous) and anti-nutritional factors (phytate and tannin) following the respective standard methods of analysis [3].

Nutrient adequacy of the complementary foods

Adequacy of the complementary foods in nutrients for complementary feeding purposes was assessed as a ratio between actual composition and recommended composition of complementary foods [13].

Statistical analysis

The data were analysed using Statistical Package for Social Sciences software version 20 (SPSS Inc., Chicago, IL, USA). Descriptive statistics such as percentages were calculated. Bivariate analysis was conducted for the dietary diversity data. P values of less than 0.05 were regarded as statistically significant.

Results

Characteristics of the sample

Table 1 presents the socio-demographic characteristics of the respondents. Fifty four percent of the children in this study were male and 46% were female. Four hundred thirty-three out of 558 children included in the study were aged 6–24 months old. The larger part of the participants 372 (66.7%) were rural residents. A majority of the participants 516 (92.5%) was Muslims in religion. More than half of the children 306 (54.8%) were third and above in their birth order. Additionally, majority of the mothers 360 (64.5%) were aged 20–29 years old. Regarding literacy, larger part of the participants 336 (60.2%) did not attend formal education. A large proportion of the mothers 436 (78.1%) were housewives.

Table 1 Description of the study participants (Jimma Zone, Southwest Ethiopia, 2014)

Complementary feeding practices

Table 2 shows the infant- and young child-feeding practices in the study area. The majority (88.9%) of the children were exclusively breastfed, and 75.6% were breastfed up to the age of 2 years. Both early and late initiation of additional food was practised extensively in the study area, but most (82.9%) of the mothers started to give complementary food to their children just at 6 months. However, nearly half of the mothers (53.8%) do not prepare any particular complementary food other than the typical family dish while the rest make some other additional foods of which gruel or Atmit is the predominant one. At the same point, almost all (91.6%) of the mothers do not prepare any particular food to their children during sickness or recovery from disease. The study also signified that 96.7% of the mothers feed their children 3–4 times a day.

Table 2 Complementary feeding practices of children 6–24 months old in three districts of Jimma Zone, Southwest Ethiopia, from March to May 2014

Regarding dietary intake, two thirds (68.8%) of the study participants consumed cereal-based gruel (made of barley, oat, teff, wheat, sorghum). Nearly half (44.6%) of the study participants reported that they fed their children with protein-rich food before the survey and (53.6%) of the study subjects consumed discretionary calories in the previous 24 h. Fruits, vegetables and dairy products were consumed by 28.1%, 38.5% and 17.9% of the participants, respectively.

Dietary diversity

Table 3 presents the dietary diversity of the study participants. Majority of the children (83.9%) did not get the minimum dietary diversity. Dietary diversity score was significantly (P < 0.05) influenced by the age and birth order of the child, maternal and paternal education, socio-economic status of the family and paternal occupation. Higher dietary diversity was scored among children aged 12–24 months old, whose birth order was first and whose parents were formally educated. Children whose fathers are not farmers and children living in homes with higher wealth status also had higher DDS.

Table 3 Distribution of child DDS by different variables in Jimma Zone, South West Ethiopia

Nutrient composition of complementary foods

The macronutrient composition and energy contents of the complementary foods are presented in Table 4. The moisture, total carbohydrate, protein, crude fat, total ash, crude fibre and energy content of the sampled complementary foods ranged between 58.4 and 79.6%, 4.29 and 24.44%, 8.21 and 11.87%, 0.86 and 8.49%, 2.94 and 8.03%, 2.28 and 8.19% and 27.87 and 162.57 cal, respectively.

Table 4 The proximate composition and calorific value of sampled complementary foods (Atmits) in three districts of Jimma Zone, Southwest Ethiopia from March–May, 2014

On the other hand, Table 5 presents the micronutrient and anti-nutrient composition of complementary foods dominantly consumed by the children. The mineral content ranged between 168.41 and 250.4 mg/100 g, 1.78 and 4.14 mg/100 g, 22.48 and 42.39 mg/100 g and 225.56 and 317 mg/100 g for calcium, zinc, iron, and phosphorus, respectively. The anti-nutritional factor contents ranged between BDL (below detection limit) of 117.72 mg/100 g for phytate and 1.17–75.17 mg/100 g for tannin.

Table 5 The mineral and anti-nutritional factor content of sampled complementary foods (Atmits) in three districts of Jimma Zone, Southwest Ethiopia, from March to May, 2014

Nutrient adequacy of complementary foods for complementary feeding purposes

Table 6 presents nutrients adequacy of the studied complementary foods for complementary feeding purposes. All of the foods did not contain adequate amounts of protein, fat, energy, zinc and calcium (values < 1. On the other hand, most of the diets provide sufficient quantities of ash and iron (values > 1). The requirements were not met for any of the nutrients.

Table 6 Adequacy of the complementary foods in nutrients for complementary feeding purposes

Discussion

Complementary feeding practices

Studies in developing countries showed that both too early and a too late introduction of complementary food is familiar. Mothers in South Africa start complementary feeding within 2–3 months. In Uganda, 44.1% and 27% mothers began complementary feeding within 2–3 months in 1997 and 2005, respectively [2]. Our findings oppose these reports because for the majority of the children in the study area complementary feeding is initiated just at the appropriate time.

Contrary to the recommended practice of complementary feeding, the majority of the mothers do not prepare particular food during sickness or recovery. During an illness, the need for fluid often increases, so a child should be offered and encouraged to take more [6]. However, feeding frequency in the study area was optimal for children in the age group of 6–12 but not for those in the age group of 13–24 months. The recommended number of meals per day for a healthy breastfed baby should be 2–3 times at 6–8 months, 3–4 times at 9–11 months and 3–4 times with 1–2 additional nutritious snacks at 12–23 months of age [25].

The predominant complementary food fed to children in the study areas is gruel (a liquid drink made of cereals), locally named Atmit, ranking first in the all of the three districts. In Ethiopia, 70% of children aged 6–23 months, predominantly consume foods made of grains [7]. Similarly, a study conducted in Nigeria reported that the dominant food groups in the children’s diet were cereal/grains [2]. Nutritional problems are common among populations whose diets are predominantly based on starchy staples [21], and these plant-based foods are low in micronutrient contents, high in phytate and high in dietary fibre which inhibits the absorption of micronutrients [17].

Dietary diversity

The results of the current study showed that nearly half of the children had sub-optimal dietary diversity. A survey of community-based production complementary foods in four regions of Ethiopia has reported that the highest mean diversity score of 3.4 was observed in Oromia region, followed by Tigray (2.9) Amhara (2.7) and SNNP (2.6) regions. In Oromia region, nearly half (49.4%) of the children had a suboptimal diet diversity [1].

According to our results, children from wealthier households consumed more diversified diets. The ability to produce sufficient food for one’s household at home and generate enough revenue to purchase foods on the market are ways that a family could achieve food security [16].

The results of this study also indicated that girls are fed with less diversified diet compared to their male counterparts. Male gender bias in the intra-household distribution of food and other resources has been reported from Ethiopia [15] indicating that girls are less favoured in the resource-constrained environments.

Composition of diets

The complementary foods were predominantly made of starch-based cereals and hence of poor nutritional value, and do not satisfy the infant’s basic needs of protein because they have limited levels of protein both qualitatively and quantitatively. As well, macro- and micronutrients may be insufficient to maintain growth and development, this results in reduced nutritional status in children [25].

Nutrient adequacy of the complementary foods for complementary feeding purposes

Complementary foods should contain the following amount of estimated macronutrients: moisture content of ≤ 5%, an ash content of ≤ 3%, a crude protein content of ≥ 15%, a crude fat content of 10–25%, a crude fibre content of ≤ 5% and a carbohydrate content of 64 ± 4%. Additionally, the energy content of 400–425 kcal/100 g, a calcium content of 500 mg/100 g, the iron content of 16 mg/100 g and zinc content of 3.2 mg/100 g are also required [13]. Children younger than 2 years old and living in developing countries should consume approximately 137–187 g/day, 206–281 g/day and 378–515 g/day of complementary foods at the age of 6–8 months, 9–11 months and 12–24 months, respectively to meet their energy needs [18]. The total nutrient and energy requirements of healthy breastfeeding infants have been established [11]. The average nutrient and energy that a given complementary food should provide are estimated by subtracting average nutrient and energy content of breast milk from the total nutrient and energy requirement at each age [24]. The complementary food samples were not adequate in nutrients for complementary feeding purposes.

Over and under-reporting of infant dietary intakes is among the reasons that made quantifying infants’ diets difficult. Parents tend to over-report intakes for they do not wish to be seen either to be under-feeding babies or on the one hand not being able to distinguish between food offered to young children and the amount consumed [8].

Conclusions

The feeding practices of 6–24-month-old children in the study area were not satisfactory. Dietary diversity and macronutrient, energy and overall nutrient composition of the complementary foods were below the recommendations. The complementary foods were found to contain adequate amounts of iron. Improving the nutrient adequacy of the locally available customary diets through food processing techniques and a community-based nutritional education on optimal child feeding are recommended.

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Acknowledgements

The authors would like to thank all the mothers and children who participated in this study. We are very grateful to the health extension workers.

Funding

This research was funded by the German Federal Ministry of Education and Research [grant number 031A247A] within the framework of the GlobE initiative through the Reduction of Post-Harvest Losses and Value Addition in East African Food Value Chains (RELOAD) project.

Availability of data and materials

The datasets used and/or analysed during the current study are available from the corresponding author on reasonable request.

Author information

SFF, TB and OH conceived and designed the experiments. NK and SFF collected the data. SFF, NK and TB analysed the data. SFF, TB and OH contributed reagents/materials/analysis tools. SFF prepared the draft manuscript. TB and OH finalised the manuscript and provided a critical review. All authors have read and approved the final manuscript.

Correspondence to Sirawdink Fikreyesus Forsido.

Ethics declarations

Ethics approval and consent to participate

Ethical clearance was obtained from the Research and Ethical Review Board of Jimma University. Permission to undertake the study was obtained from every relevant authority in Jimma Zone. Each study participant was briefed about the study and offered the opportunity to ask questions. Then oral informed consent was obtained from each participant prior to participation in the study and data was kept confidential. The Ethical Review Board decided to have oral consent as the study was not intervention. In addition, the data collection and consent process were randomly checked by the Ethical Review Board to ensure the ethical undertaking of the research.

Consent for publication

Not applicable.

Competing interests

The authors declare that they have no competing interests.

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Keywords

  • Dietary diversity
  • Nutrient adequacy
  • Complementary foods
  • Proximate composition