Carotenoid deposition in yolks of laying hens fed with corn diets differing in grain hardness and supplemented with rapeseed oil and emulsifier.

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  • Additional Information
    • Source:
      Publisher: Elsevier Country of Publication: England NLM ID: 0401150 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1525-3171 (Electronic) Linking ISSN: 00325791 NLM ISO Abbreviation: Poult Sci Subsets: MEDLINE
    • Publication Information:
      Publication: 2020- : [Cambridge, UK] : Elsevier
      Original Publication: Champaign Il : Poultry Science Association
    • Subject Terms:
      Rapeseed Oil*/chemistry ; Rapeseed Oil*/administration & dosage ; Chickens*/physiology ; Animal Feed*/analysis ; Zea mays*/chemistry ; Diet*/veterinary ; Egg Yolk*/chemistry ; Carotenoids*/metabolism ; Carotenoids*/administration & dosage ; Emulsifying Agents*/administration & dosage ; Emulsifying Agents*/chemistry ; Dietary Supplements*/analysis; Animals ; Female ; Random Allocation ; Animal Nutritional Physiological Phenomena/drug effects ; Dose-Response Relationship, Drug
    • Abstract:
      This study investigated the effects of supplementing diets consisting of two dent corn hybrids (soft- and hard-type) with different amounts of rapeseed oil (2, 3, and 4%) and with (0.05%) or without emulsifier (Lysoforte Extended, Kemin) on the content and deposition of carotenoids in egg yolk. The feeding trial was conducted with 216 Lohmann Brown laying hens which were by 3 located in 72 cages. The cages were randomly assigned to 12 dietary treatments (2 hybrids × 3 rapeseed oil levels × 2 emulsifier levels), resulting in 6 cages (replicates) per each dietary treatment. After depletion, hens were fed treatment diets without added pigment for 7 wk. After stabilization of the carotenoid profile (lutein, zeaxanthin, α- and β-cryptoxanthin and β-carotene and total carotenoids), eggs were collected once a week until the end of the experiment and deposition efficiency was calculated based on carotenoid content in yolk and diets, yolk weight, egg production and diet intake. Corn hybrid and rapeseed oil affected (P < 0.05) the yolk content and deposition efficiency of most carotenoids. Moreover, a significant (P < 0.05) hybrid × rapeseed oil level interaction for all carotenoids indicated hybrid-specific responses to rapeseed oil supplementation. In the soft-type hybrid, the addition of 3% rapeseed oil enhanced the carotenoid content compared to 2% of rapeseed oil, whereas for the hard-type hybrid, 2 and 3% of rapeseed oil resulted in similar contents. Supplementation of 4% rapeseed oil reduced the content regardless of the hybrid. Emulsifier addition positively affected (P < 0.05) the deposition efficiency of all carotenoids except β-carotene. In conclusion, supplementing corn diets with rapeseed oil and emulsifier affected carotenoid utilization and these responses varied in hybrids differing in grain hardness, which should be considered when using corn as the sole source of carotenoids in hen diets.
      Competing Interests: DISCLOSURES The authors declare no conflicts of interest.
      (Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.)
    • Contributed Indexing:
      Keywords: carotenoid; corn hybrid; emulsifier; laying hen; rapeseed oil
    • Accession Number:
      0 (Rapeseed Oil)
      36-88-4 (Carotenoids)
      0 (Emulsifying Agents)
    • Publication Date:
      Date Created: 20240622 Date Completed: 20240728 Latest Revision: 20240728
    • Publication Date:
      20240729
    • Accession Number:
      PMC11246041
    • Accession Number:
      10.1016/j.psj.2024.103922
    • Accession Number:
      38908122