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Previous issue date: 2007-07-01 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / Vitamin A deficiency is a serious public health problem in developing countries, and it causes death and blindness among children in the developing countries. The fortification of food could be an important source of vitamins to control deficiency. 60 Coturnix coturnix japonica quails were used in a randomized design with duration of seven weeks. The birds were assigned into five treatments with four repetitions. The objective was to evaluate the influence of the supplementation with different levels of retinyl palmitate (2,000 IU, 4,000 IU, 8,000IU and 16,000 IU) in quails under the levels of retinyl in egg yolks. The method used to dose retinyl in yolks of quail eggs was High Performance Liquid Chromatography and the enzymatic method to quantify the cholesterol concentration. The weight and production of eggs was significantly modified by the supplementation with retinyl in the birds. The results showed a gradual increase in the incorporation of retinyl in the egg yolk as a response to the supplementation, reaching values 384% higher than the control values. By the end of the supplementations a significant reduction in the concentrations of retinyl in the eggs yolk was observed. The most lasting supplementations were with 8,000 IU and 16,000 IU which lasted for three weeks. The cholesterol content in eggs was not significantly modified. The consumption of one egg enriched with 16000UI of retinol palmitate in the present study, by day, would probably reach 10 and 7,3% of the daily recommendations of this micronutrient for children of 1 to 3 years of age, and for 4 to 8 years, respectively. The nutritional value of eggs, related to the vitamin A, can be improved by supplementation of quails / A defici?ncia de vitamina A ? um s?rio problema de sa?de p?blica, e causa a morte e cegueira em crian?as nos pa?ses em desenvolvimento. A fortifica??o de alimentos como ovos, pode ser uma importante fonte de vitaminas para o controle da defici?ncia. Foram utilizadas 60 codornas Coturnix coturnix japonica em delineamento experimental inteiramente ao acaso, com dura??o de sete semanas. As aves foram distribu?das em cinco tratamentos com quatro repeti??es cada. O objetivo foi avaliar a influ?ncia de diferentes n?veis de retinol palmitato (2000UI, 4000UI, 8000UI e 16000UI) em codornas sobre os n?veis de retinol na gema dos ovos. O m?todo utilizado para dosar retinol na gema dos ovos de codornas foi a Cromatografia L?quida de Alta Efici?ncia (CLAE) e o m?todo enzim?tico para quantificar a concentra??o de colesterol. O peso e a produ??o de ovos foram significativamente alterados pela suplementa??o oral com retinol nas aves. Os resultados mostraram um aumento progressivo na incorpora??o de retinol na gema do ovo em resposta ? suplementa??o, atingindo valores 384% superiores aos valores de controle. Ao t?rmino das suplementa??es foi observada uma diminui??o significativa nas concentra??es de retinol na gema dos ovos, sendo as suplementa??es com 8000UI e 16000UI as mais duradouras e mesmo ap?s tr?s semanas continuaram com os n?veis de retinol elevados. O conte?do de colesterol nos ovos n?o foi significativamente alterado. O consumo de um ovo enriquecido com 16000 UI de retinol palmitato no presente estudo, por dia, provavelmente atenderia em torno de 10 e 7,3% das recomenda??es di?rias deste micronutriente para crian?as na faixa et?ria de 1 a 3 anos, e 4 a 8 anos, respectivamente. O valor nutricional dos ovos, relacionado ? vitamina A, pode ser aumentado pela suplementa??o das codornas
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/12633 |
| Date | 01 July 2007 |
| Creators | Ramalho, Heryka Myrna Maia |
| Contributors | CPF:18095640425, http://lattes.cnpq.br/8520928220989866, Abreu, Luiz Roberto Diz de, CPF:27785858500, http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4723470U6, Dimenstein, Roberto |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa de P?s-Gradua??o em Bioqu?mica, UFRN, BR, Bioqu?mica; Biologia Molecular |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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