title: Effect of dietary fatty acids on serum parameters, fatty acid compositions, and liver histology in Shaoxing laying ducks.
abstract: The effects of different fatty acid (FA) contents in diet on serum parameters, FA compositions of eggs and meat, and liver morphological changes were studied in Shaoxing laying ducks. A total of 264 ducks at 17 weeks were fed a control diet or a diet containing 30 g/kg fish oil (FO), 25 g/kg sunflower oil (SO), or 30 g/kg palm oil with 20 g/kg beef tallow (PBO). Malondialdehyde (MDA) content in the liver and the serum of ducks fed the PBO diet was significantly (P<0.05) higher than that of ducks fed the other diets. Triglyceride (TG) and total cholesterol (TC) levels were significantly lower (P<0.05) in ducks fed the FO diet. Serum TC also was lower in ducks fed the SO diet. Superoxide dismutase (SOD) activity was also affected by diets. The contents of polyunsaturated FAs (PUFAs) in eggs and meat were significantly higher (P<0.001) in ducks fed the FO and SO diets than in ducks fed the control diet. The level of C22:6 (n-3) FA in ducks fed the FO diet was significantly higher than that in ducks fed the other diets. However, the conversion efficiency of the longer-chain C20:5 (n-3) FA was higher than that of C22:6 (n-3). Ducks fed the PBO diet exhibited lipid droplet accumulation in the liver. These results demonstrate that a diet enriched with different FAs has strong effects on serum lipid levels and the deposition of PUFAs into tissue lipids.
authors: Institute of Animal Husbandry and Veterinary Science, Zhejiang Academy of Agricultural Sciences, Hangzhou, China.
authors: Wei-meng
authors: WM
authors: Liu
authors: Shu-jing
authors: SJ
authors: Lai
authors: Li-zhi
authors: LZ
authors: Lu
authors: Fang-xiong
authors: FX
authors: Shi
authors: Jing
authors: J
authors: Zhang
authors: Yu
authors: Y
authors: Liu
authors: Bo
authors: B
authors: Yu
authors: Zheng-rong
authors: ZR
authors: Tao
authors: Jun-da
authors: JD
authors: Shen
authors: Guo-qin
authors: GQ
authors: Li
authors: De-qian
authors: DQ
authors: Wang
authors: Jin-jun
authors: JJ
authors: Li
authors: Yong
authors: Y
authors: Tian
mesh_terms: D000818:Animals; D002784:Cholesterol / Q000378:metabolism; D004032:Diet; D004372:Ducks; D005227:Fatty Acids / Q000378:metabolism*; D005260:Female; D015227:Lipid Peroxidation; D008055:Lipids / Q000737:chemistry; D008099:Liver / Q000378:metabolism / Q000473:pathology*; D010100:Oxygen / Q000737:chemistry; D000073878:Palm Oil; D010938:Plant Oils / Q000378:metabolism; D013482:Superoxide Dismutase / Q000378:metabolism; D014280:Triglycerides / Q000378:metabolism
chemical_list: D005227:Fatty Acids; D008055:Lipids; D010938:Plant Oils; D014280:Triglycerides; D000073878:Palm Oil; D002784:Cholesterol; D013482:Superoxide Dismutase; D010100:Oxygen