The effects of long (C20/22) and short (C18) chain omega-3 fatty acids on keel bone fractures, bone biomechanics, behavior, and egg production in free-range laying hens

Poultry Science
Michael J ToscanoJ F Tarlton

Abstract

Keel fractures in the laying hen are the most critical animal welfare issue facing the egg production industry, particularly with the increased use of extensive systems in response to the 2012 EU directive banning conventional battery cages. The current study is aimed at assessing the effects of 2 omega-3 (n3) enhanced diets on bone health, production endpoints, and behavior in free-range laying hens. Data was collected from 2 experiments over 2 laying cycles, each of which compared a (n3) supplemented diet with a control diet. Experiment 1 employed a diet supplemented with a 60:40 fish oil-linseed mixture (n3:n6 to 1.35) compared with a control diet (n3:n6 to 0.11), whereas the n3 diet in Experiment 2 was supplemented with a 40:60 fish oil-linseed (n3:n6 to 0.77) compared to the control diet (n3:n6 to 0.11). The n3 enhanced diet of Experiment 1 had a higher n3:n6 ratio, and a greater proportion of n3 in the long chain (C20/22) form (0.41 LC:SC) than that of Experiment 2 (0.12 LC:SC). Although dietary treatment was successful in reducing the frequency of fractures by approximately 27% in Experiment 2, data from Experiment 1 indicated the diet actually induced a greater likelihood of fracture (odds ratio: 1.2) and had substantia...Continue Reading

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Citations

Jun 23, 2018·Frontiers in Veterinary Science·Christina RufenerMichael J Toscano
Feb 23, 2020·Scientific Reports·E A ArmstrongT V Smulders
Mar 11, 2020·Frontiers in Veterinary Science·Beryl Katharina EusemannStefanie Petow
Oct 27, 2017·Journal of Healthcare Engineering·Yuhui ChenXiaochun Bai
Mar 16, 2018·Frontiers in Veterinary Science·Anja B RiberMette S Herskin
Jan 2, 2021·Frontiers in Veterinary Science·Neža Rokavec, Manja Zupan Šemrov
Oct 28, 2017·Journal of Healthcare Engineering·Yuhui ChenXiaochun Bai
Aug 14, 2021·PloS One·Ida C N ThøfnerJens Peter Christensen

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