This experiment was conducted to study the effects of different dietary levels of vitamin A on performance, egg quality, the relationship between the presence form, form proportion and total vitamin A content in eggs and dietary vitamin A of laying hens. A total of 600 Hy-Line brown laying hens...

The relationship between vitamin A, retinol activity, and eye health has been briefly elucidated. Based on certain reports, vitamin A and retinol activity can help overcome vitamin A insufficiency i.e., xerophthalmia. The present review assesses vitamin A sources, β-carotene and β-cryptoxanthin in ...

Background: Vitamin A one of the important micronutrients that it cannot be made in the human body and must be taken from outside the body through the diet. Ensuring that vitamin A is available in any form in sufficient quantities remains a challenge, especially in regions where access to vitamin A...

Objective: Vitamin A deficiency (VAD) has serious public health consequences including morbidity and mortality for populations in low and middle-income countries (LMICs), especially for children under 5 years and pregnant women. LMICs are at greater risk of VAD, in part due to low levels of...

Vitamin A and its precursors in breast milk play an important role in the growth and development of infants and young children. In this study, the qualitative and quantitative analyses of β-carotene, vitamin A, and vitamin A esters in breast milk under different lactation stages were performed with ...

Food fortification is an efficient strategy to combat vitamin A deficiency. However, the stability of vitamin A during storage is low. Cereal bran can be used as a natural and affordable stabilising agent, but the mechanism behind this stabilisation remains unclear. To unravel this mechanism, ...

Objective: To investigate the status of physical development, vitamin A and vitamin D among primary and middle school students in poor rural areas in Hubei, to evaluate the implementation effectiveness of the Nutrition Improvement Program for Rural Compulsory Education Students (abbreviated to the...

Vitamin A is a micronutrient important for vision, cell growth, reproduction and immunity. Both deficiency and excess consuming of vitamin A cause severe health consequences. Although discovered as the first lipophilic vitamin already more than a century ago and the definition of precise biological ...

Vitamin A has a key role in lung development and its deficiency is associated with an increased risk of bronchopulmonary dysplasia. This secondary cohort analysis of the ImNuT trial (Immature, Nutrition Therapy NCT03555019) aimed to (1) explore vitamin A status in preterm infants <29 weeks gestation and (2) assess the influence of inflammation and postnatal dexamethasone exposure on vitamin A...

Background: Suboptimal plasma retinol concentrations have been documented in US children with sickle cell disease (SCD) hemoglobin SS type (SCD-HbSS), but little is known about vitamin A kinetics and stores in SCD. Objectives: The objectives were to quantify vitamin A total body stores (TBS) and...