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Lipids

, Volume 51, Issue 5, pp 601–614 | Cite as

Hempseed Products Fed to Hens Effectively Increased n-3 Polyunsaturated Fatty Acids in Total Lipids, Triacylglycerol and Phospholipid of Egg Yolk

  • M. Neijat
  • M. Suh
  • J. Neufeld
  • J. D. House
Original Article
Part of the following topical collections:
  1. Northern Great Plains Lipid Conference

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.

Keywords

Egg yolk Hempseed products Fatty acid profile 

Abbreviations

ADF

Acid detergent fibre

ALA

Alpha-Linolenic (C18:3n-3)

ARA

Arachidonic acid (C20:4n-6)

DHA

Docosahexaenoic acid (C22:6n-3)

DPA

Docosapentaenoic acid (C22:5n-3)

EPA

Eicosapentaenoic acid (C20:5n-3)

GLA

Gamma-linolenic acid (C18:3n-6)

HS

Hempseed

HO

Hempseed oil

LA

Linoleic acid (C18:2n-6)

MUFA

Monounsaturated fatty acid(s)

NDF

Neutral detergent fiber

PL

Phospholipid

PUFA

Polyunsaturated fatty acid(s)

SFA

Saturated fatty acid(s)

TAG

Triacylglycerol

Notes

Acknowledgments

This work was supported by a grant from the Canadian Hemp Trade Alliance (CHTA; Winnipeg, MB, Canada); Canadian Agricultural Adaptation Program (CAAP; Ottawa, ON, Canada) and Province of Manitoba Science and Technology International Collaboration Fund (Winnipeg, MB, Canada). In addition, the authors acknowledge statistical assistance from Drs. G. H. Crow and L. Onischuk (Department of Animal Science, University of Manitoba), technical assistance from N. Gakhar (Department of Animal Science, University of Manitoba) and support with animal care from J. Levandoski and A. Chartier (Poultry Research Unit, University of Manitoba).

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Copyright information

© AOCS 2015

Authors and Affiliations

  • M. Neijat
    • 1
  • M. Suh
    • 2
    • 3
  • J. Neufeld
    • 2
  • J. D. House
    • 1
    • 2
    • 3
    • 4
  1. 1.Department of Animal ScienceUniversity of ManitobaWinnipegCanada
  2. 2.Department of Human Nutritional SciencesUniversity of ManitobaWinnipegCanada
  3. 3.Richardson Centre for Functional Foods and NutraceuticalsUniversity of ManitobaWinnipegCanada
  4. 4.Canadian Centre for Agri-Food Research in Health and MedicineSt. Boniface Research CentreWinnipegCanada

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