title: Feeding steam-pelleted rapeseed affects expression of genes involved in hepatic lipid metabolism and fatty acid composition of chicken meat.
abstract: This study investigated the dietary effect of steam-pelleted rapeseed (RS) diets with different inclusion levels on the fatty acid composition of chicken meat and the expression of lipid metabolism-related genes in the liver. Experimental diets included 6 different wheat-soybean meal based diets either in nonpelleted or steam-pelleted form supplemented with 80, 160, and 240 g RS/kg feed and one nonpelleted wheat-soybean meal based diet without RS supplementation as the control. These diets were fed to newly hatched broiler chickens (Ross 308) for 34 days. Compared to the control diet, steam-pelleted diets containing 160 or 240 g/kg RS significantly increased the content of omega-3 long chain polyunsaturated fatty acids (n-3 LC-PUFA) in the breast and drumstick, while their meat yields were not affected. Moreover, the mRNA levels of fatty acid desaturase 1 (FADS1) and acyl-coenzyme A oxidase 1 (ACOX1) in their livers increased. Therefore, steam-pelleted diets with 160 or 240 g/kg RS can be used to increase the n-3 LC-PUFA content in chicken meat without compromising meat yield.
authors.affiliation: School of Food Science and Technology, Dalian Polytechnic University; National Engineering Research Center of Seafood; Ganjingzi 116304, Dalian, Liaoning, China.|Department of Molecular Sciences, Swedish University of Agricultural Sciences, P.O. Box 7015, 75007 Uppsala, Sweden.
authors.forename: S
authors.initials: S
authors.lastname: Li
authors.affiliation: Department of Molecular Sciences, Swedish University of Agricultural Sciences, P.O. Box 7015, 75007 Uppsala, Sweden.
authors.forename: A Schiller
authors.initials: AS
authors.lastname: Vestergren
authors.affiliation: Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, P.O. Box 7024, 75007 Uppsala, Sweden.
authors.forename: H
authors.initials: H
authors.lastname: Wall
authors.affiliation: Department of Molecular Sciences, Swedish University of Agricultural Sciences, P.O. Box 7015, 75007 Uppsala, Sweden.
authors.forename: S
authors.initials: S
authors.lastname: Trattner
authors.affiliation: Department of Molecular Sciences, Swedish University of Agricultural Sciences, P.O. Box 7015, 75007 Uppsala, Sweden.
authors.forename: J
authors.initials: J
authors.lastname: Pickova
authors.affiliation: Department of Animal Nutrition and Management, Swedish University of Agricultural Sciences, P.O. Box 7024, 75007 Uppsala, Sweden.
authors.forename: E
authors.initials: E
authors.lastname: Ivarsson
mesh_terms: D000821:Animal Feed / Q000032:analysis*; D000818:Animals; D029688:Brassica napus / Q000737:chemistry*; D002645:Chickens / Q000235:genetics / Q000502:physiology*; D004032:Diet / Q000662:veterinary; D019587:Dietary Supplements / Q000032:analysis; D004305:Dose-Response Relationship, Drug; D005227:Fatty Acids / Q000378:metabolism*; D015870:Gene Expression; D050356:Lipid Metabolism; D008099:Liver / Q000378:metabolism; D008460:Meat / Q000032:analysis*; D010369:Pectoralis Muscles / Q000502:physiology; D011897:Random Allocation
chemical_list: D005227:Fatty Acids
keywords: ACOX1; FADS1; fatty acid; n-3 LC-PUFA; rapeseed