Effects of dietary fats on egg quality and lipid parameters in serum and yolks of Shan Partridge Duck.
The effects of different dietary fats with variable levels of polyunsaturated fatty acids (PUFAs) on egg quality of Shan Partridge Duck, serum, and yolk lipid parameters were examined in this study. A flock of 585 optimal produced ducks were selected and diets enriched with 0.5%, 1%, or 2% fish oil (F)/flaxseed oil (FL)/rapeseed oil (R)/tallow (T) plus basal diet were supplied through a 28-d period. Supplemental fat source and fat level had no effects on egg qualities. Proportions of yolk total cholesterol (TC), saturated fatty acids (SFAs), monounsaturated fatty acids (MUFAs) were reduced (P < 0.001), while polyunsaturated fatty acids (PUFAs), ω-6 polyunsaturated fatty acids (n-6 PUFAs), ω-3 polyunsaturated fatty acids (n-3 PUFAs), Docosahexaenoic Acid (DHA), and Eicosapentaenoic Acid (EPA) were increased by fish oil, flaxseed oil, or rapeseed oil. Effects of supplementation increasing DHA and EPA were detected in F, FL, and R. Compared with C, fish oil significantly increased low-density lipoprotein cholesterol (LDL-C) in serum, flaxseed oil significantly reduced TC and increased very low-density lipoprotein cholesterol (VLDL-C), rapeseed oil significantly reduced TC and LDL-C in serum and increased VLDL-C, tallow significantly increased LDL-C. It is concluded that unsaturated fatty acids rich diets (fish oil, flaxseed oil, and rapeseed oil) might increase yolk PUFAs, reduce yolk cholesterol, and change serum lipid parameters without evident effect on egg qualities.
College of Animal Sciences, Zhejiang University, Hangzhou 310058, P. R. China.|Institute of Animal Husbandry and Veterinary Science, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, P. R. China.
Xue
X
Du
Zhejiang Animal Husbandry Techniques Extension Station, Hangzhou 310020, P. R. China.
Yali
Y
Liu
Institute of Animal Husbandry and Veterinary Science, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, P. R. China.
Lizhi
L
Lu
Department of Human Nutrition, Kansas State University, Manhattan, KS 66506, USA.
Weiqun
W
Wang
Institute of Animal Husbandry and Veterinary Science, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, P. R. China.
Tao
T
Zeng
Institute of Animal Husbandry and Veterinary Science, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, P. R. China.
Yong
Y
Tian
Institute of Animal Husbandry and Veterinary Science, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, P. R. China.
Xiaoqin
X
Xu
Zhejiang Zhuowang Agricultural Sci-Tech Co., Ltd, Huzhou 313014, P. R. China.
Jianliang
J
Shen
College of Animal Sciences, Zhejiang University, Hangzhou 310058, P. R. China.
Dong
D
Niu
Department of Emergency Medicine, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, P. R. China.
Yingru
Y
Lu
D000821:Animal Feed / Q000032:analysis*; D000818:Animals; D002784:Cholesterol / Q000032:analysis* / Q000097:blood*; D004032:Diet / Q000662:veterinary; D004041:Dietary Fats / Q000008:administration & dosage*; D004281:Docosahexaenoic Acids / Q000032:analysis; D004372:Ducks; D004530:Egg Yolk / Q000737:chemistry*; D004531:Eggs / Q000032:analysis; D015118:Eicosapentaenoic Acid / Q000032:analysis; D005223:Fats / Q000008:administration & dosage; D005227:Fatty Acids / Q000032:analysis; D005231:Fatty Acids, Unsaturated / Q000032:analysis; D005395:Fish Oils / Q000008:administration & dosage; D008043:Linseed Oil / Q000008:administration & dosage; D000074262:Rapeseed Oil / Q000008:administration & dosage
D004041:Dietary Fats; D005223:Fats; D005227:Fatty Acids; D005231:Fatty Acids, Unsaturated; D005395:Fish Oils; D000074262:Rapeseed Oil; D004281:Docosahexaenoic Acids; D008043:Linseed Oil; D002784:Cholesterol; C013698:tallow; D015118:Eicosapentaenoic Acid
duck; egg quality; supplemental fats; yolk PUFAs; yolk cholesterol