title: Hempseed Products Fed to Hens Effectively Increased n-3 Polyunsaturated Fatty Acids in Total Lipids, Triacylglycerol and Phospholipid of Egg Yolk.
abstract: Hempseed products represent potential alternative feed ingredients for poultry. However, their usage is not currently approved due to a lack of data to support their safety and efficacy. In this regard, the current study was conducted to assess the impact of dietary concentration of hempseed (HS) products and duration of their feeding to hens on the polyunsaturated fatty acid (PUFA) composition of egg yolk lipids. In the current study, 48 Lohmann LSL-Classic hens were individually housed in metabolism cages, in a completely randomized design, and provided one of six diets (wheat-barley-soybean-based) containing either HS (10, 20 and 30 %), hempseed oil (HO; 4.5 and 9.0 %) or no hempseed product (control) over 12 weeks. Increasing alpha-linolenic acid (ALA) intake via increasing dietary hempseed product inclusion, significantly (p < 0.0001) increased the n-3 PUFA contents of yolk total lipid. The values of ALA increased by 12-fold (152 ± 3.56 and 156 ± 2.42 mg/yolk) and docosahexaenoic acid (DHA) by twofold to threefold (41.3 ± 1.57 and 43.6 ± 1.61 mg/yolk) over the control, for the highest levels of HS and HO inclusion, respectively. Increasing levels of hemp products in laying hen diets proved effective in manipulating the fatty acid profile of the total lipid, triacylglycerol (TAG) and total phospholipid (PL) fractions of yolks, enhancing the n-3 fatty acids and reducing the n-6/n-3 ratio. The latter benefit was achieved within 4 weeks of feeding hens either HS- or HO-containing diets.
authors.affiliation: Department of Animal Science, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada.
authors.forename: M
authors.initials: M
authors.lastname: Neijat
authors.affiliation: Department of Human Nutritional Sciences, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada.|Richardson Centre for Functional Foods and Nutraceuticals, University of Manitoba, Winnipeg, MB, R3T 2E1, Canada.
authors.forename: M
authors.initials: M
authors.lastname: Suh
authors.affiliation: Department of Human Nutritional Sciences, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada.
authors.forename: J
authors.initials: J
authors.lastname: Neufeld
authors.affiliation: Department of Animal Science, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada. j_house@umanitoba.ca.|Department of Human Nutritional Sciences, University of Manitoba, Winnipeg, MB, R3T 2N2, Canada. j_house@umanitoba.ca.|Richardson Centre for Functional Foods and Nutraceuticals, University of Manitoba, Winnipeg, MB, R3T 2E1, Canada. j_house@umanitoba.ca.|Canadian Centre for Agri-Food Research in Health and Medicine, St. Boniface Research Centre, Winnipeg, MB, R2H 2A6, Canada. j_house@umanitoba.ca.
authors.forename: J D
authors.initials: JD
authors.lastname: House
mesh_terms: D000821:Animal Feed / Q000032:analysis*; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D002188:Cannabis / Q000737:chemistry*; D002645:Chickens / Q000502:physiology*; D004530:Egg Yolk / Q000737:chemistry / Q000378:metabolism; D015525:Fatty Acids, Omega-3 / Q000032:analysis / Q000378:metabolism*; D050356:Lipid Metabolism; D010743:Phospholipids / Q000032:analysis / Q000378:metabolism*; D012639:Seeds / Q000737:chemistry*; D014280:Triglycerides / Q000032:analysis / Q000378:metabolism*
chemical_list: D015525:Fatty Acids, Omega-3; D010743:Phospholipids; D014280:Triglycerides
keywords: Egg yolk; Fatty acid profile; Hempseed products