Effects of dietary algal docosahexaenoic acid oil supplementation on fatty acid deposition and gene expression in laying Tsaiya ducks
Resource
Asian-australasian journal of animal sciences, 19(7), 1047-1053
Journal
Asian-australasian journal of animal sciences
Journal Volume
19
Journal Issue
7
Pages
1047-1053
Date Issued
2006
Date
2006
Author(s)
Abstract
The current study was designed to determine the effects of dietary docosahexaenoic acid (DHA) on fatty acid deposition in egg yolk and various tissues of laying Tsaiya ducks, and on the mRNA concentrations of hepatic lipogenesis-related transcription factors. Thirty laying ducks were randomly assigned to three treatments with diets based on corn-soybean meal (ME: 2803 kcal/kg; CP: 17.1%; Ca: 3.4%) supplemented with 0% (control diet), 0.5% or 2% algal DHA oil. The DHA content in egg yolks of the ducks was elevated significantly (p0.05). The DHA concentration in plasma, liver, and skeletal muscle was increased with the addition of dietary algal DHA oil (p<0.05). The mRNA abundance of sterol regulatory element binding protein 1 (SREBP1) and SREBP2 in the livers of laying Tsaiya ducks was not affected by dietary DHA, suggesting that the expression of these transcription factors is tightly controlled and not sensitive to DHA treatments.
Type
journal article