|
| << vorige |
Tijdschrift beschrijving
Alle jaargangen van het bijbehorende tijdschrift
Alle afleveringen van het bijbehorende jaargang
Alle artikelen van de bijbehorende aflevering
Details van artikel 4 van 4 gevonden artikelen
| Titel: |
Utilization of Dietary β-Carotene and Retinol Acetate by Goslings and Young Geese |
| Auteur: |
Jamroz, Dorota Jakobsen, Kirsten Wertelecki, Tomasz Jensen, Søren Krogh |
| Verschenen in: |
Acta agriculturae Scandinavica. Section A, Animal science |
| Paginering: | Jaargang 52 (2002) nr. 3 pagina's 150-158 |
| Jaar: |
2002-08-01 |
| Inhoud: |
One-day-old and 3-month-old geese were fed different concentrations of β-carotene (5, 10, 50 or 150 mg kg -1 feed) or retinol acetate (10 000, 20 000 or 40 000 IU kg -1 feed) for about 3 weeks to assess their ability to convert β-carotene to vitamin A. Blood serum concentrations of β-carotene, retinol, α-tocopherol, triacylglycerides and cholesterol, as well as liver concentrations of β-carotene, retinol, triacylglycerides and cholesterol, were included as response factors. βCarotene was not detectable in serum and liver. Serum and liver retinol concentrations were positively correlated with dietary concentrations of β-carotene and retinol acetate ( R 2 = 0.84 and 0.95, respectively). In goslings 1 mg of β-carotene corresponded to 63 IU retinol and in young geese to 1216 IU, equivalent to 3.8% and 72.9%, respectively, of the theoretical value of 1667 IU retinol. Cholesterol concentrations in blood serum and liver were not affected ( P > 0.05) by the dietary levels of β-carotene and retinol acetate. The concentration of α-tocopherol in blood serum decreased with increasing dietary levels of β-carotene and retinol acetate. In the goslings the concentration of triacylglycerides in serum and liver was significantly ( P < 0.05) influenced by the intake of β-carotene, but not by the intake of retinol acetate. In the young geese the serum concentration of triacylglycerides decreased ( P < 0.05) with increasing dietary levels of β-carotene, but was not affected by the dietary concentrations of retinol acetate. The concentration of triacylglycerides in liver tissue of young geese was not affected by the dietary concentration of either β-carotene or retinol acetate ( P > 0.05). |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 4 van 4 gevonden artikelen
| << vorige |