Effects of Dietary Vitamin C Supplementation on Vitamin C Synthesis, Transport, and Egg Deposition in Breeding Geese.
- 2026-01-05
- Animals : an open access journal from MDPI 16(1)
- Yanglei Hu
- Rong Xu
- Yating Zhou
- Ning Li
- Haiming Yang
- Jian Wang
- Hongchang Zhao
- Jun Yu
- PubMed: 41514835
- DOI: 10.3390/ani16010148
Study Design
- Type
- Randomized Controlled Trial (RCT)
- Sample size
- n = 450
- Population
- 450 female and 90 male 221-day-old Yangzhou geese
- Methods
- randomly assigned to five treatment groups with six replicates each, control group received a basal diet, other four groups fed diets supplemented with 100, 200, 300, and 400 mg/kg vitamin C over a 16-week feeding trial
- Duration
- 16 weeks
- Funding
- Unclear
This study aims to investigate the effects of dietary vitamin C supplementation on vitamin C synthesis, transport, and egg deposition in breeding geese. A total of 450 female and 90 male 221-day-old Yangzhou geese were randomly assigned to five treatment groups with six replicates each (15 females and 3 males per replicate). The control group received a basal diet, while the other four groups were fed diets supplemented with 100, 200, 300, and 400 mg/kg vitamin C over a 16-week feeding trial. The results showed that dietary vitamin C supplementation increased the vitamin C content in both serum and egg yolks and modulated the expression of key vitamin C-related genes. Specifically, the intestinal and ovarian sodium-dependent vitamin C transporters 1 and 2 (SVCT1/SVCT2) were upregulated, whereas hepatic and renal L-Gulonolactone oxidase (GLO) and SVCT1 were suppressed. These findings indicate that exogenous vitamin C enhances intestinal absorption, inhibits hepatic synthesis, and promotes yolk deposition, with 300 mg/kg emerging as an effective and practical supplementation level that provides a physiological basis for its application in poultry nutrition.