Nutritional Quality of Eggs of Amberlink and Hyline Layers Fed on Different Levels of Provitamin A-Biofortified Maize
| dc.creator | GW Zeina | |
| dc.creator | U Kolanisi | |
| dc.creator | M Chimonyo | |
| dc.date | 2017 | |
| dc.date.accessioned | 2026-07-07T03:24:06Z | |
| dc.description | The study was conducted to determine the interaction of types of maize (Provitamin A-biofortified maize (PABM) versus white maize) and strain of laying birds (Amberlink and Hyline) on nutritional quality of eggs. Twenty-one of each of Amberlink and Hyline laying hens were fed on three diets for 30 days. Birds were distributed in a 3 × 2 factorial arrangement constituting three diets (0, 50 or 100 % of PABM) and two strains (Amberlink & Hyline). There was a diet × strain interaction on egg shell weight, average daily feed intake, egg production, egg weight and egg shell thickness. Eggs produced by layers under 100 % PABM had lighter eggshell weight and lower eggshell percentage. In contrast, eggs produced by layers under 50 % PABM diet had significantly higher eggshell percentage, heavier egg shell weight and thicker eggshell. As the level of PABM increased, the yellow and red hue (Hunter a* and b* values) significantly increased while the lightness values (Hunter L* values) decreased. As the level of PABM in the ration increased, the vitamin A content of the egg yolk also significantly increased. Assimilation of vitamin A from feed to egg yolk in Amberlink and Hyline hens was similar. Hence, egg enrichment with vitamin A can be achieved by using PABM in layers ration. The use of high level of PABM had a negative effect on the eggshell quality traits. | |
| dc.format | application/pdf | |
| dc.identifier | 1516-635X | |
| dc.identifier | https://www.redalyc.org/articulo.oa?id=179751953014 | |
| dc.identifier.uri | http://hdl.handle.net/123456789/432839 | |
| dc.language | en | |
| dc.publisher | Fundação APINCO de Ciência e Tecnologia Avícolas | |
| dc.relation | http://www.redalyc.org/revista.oa?id=1797 | |
| dc.rights | Revista Brasileira de Ciência Avícola | |
| dc.source | Revista Brasileira de Ciência Avícola (Brasil) Num.2 Vol.19 | |
| dc.subject | Agrociencias | |
| dc.title | Nutritional Quality of Eggs of Amberlink and Hyline Layers Fed on Different Levels of Provitamin A-Biofortified Maize | |
| dc.type | artículo científico |