Rearing system affects prevalence of keel-bone damage in laying hens: a longitudinal study of four consecutive flocks.
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TLDR
Increased opportunities for exercise provided by an aviary rearing system reduced the prevalence of keel‐bone fractures through the end‐of‐lay and load‐bearing exercise improves bone strength and mineral composition in laying hens.About:
This article is published in Poultry Science.The article was published on 2017-07-01 and is currently open access. It has received 47 citations till now. The article focuses on the topics: Furnished cages & Bone growth.read more
Citations
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Journal ArticleDOI
A review of environmental enrichment for laying hens during rearing in relation to their behavioral and physiological development
TL;DR: There is a need to commercially validate positive impacts of cost‐effective enrichments on bird behavior and physiology, and areas for future research identified.
Journal ArticleDOI
The Influence of Keel Bone Damage on Welfare of Laying Hens.
TL;DR: This article reviews current knowledge about welfare implications of keel bone damage in laying hens and covers different types of welfare indicators, including measures of affective states, basic health, and functioning as well as natural living of the birds, thereby including the typical public welfare concerns.
Journal ArticleDOI
Opportunities for exercise during pullet rearing, Part I: Effect on the musculoskeletal characteristics of pullets.
T. M. Casey-Trott,D. R. Korver,Michele T. Guerin,Victoria Sandilands,Stephanie Torrey,Tina M. Widowski +5 more
TL;DR: Increased opportunities for exercise offered by the aviary rearing system increased muscle and bone growth characteristics in pullets at 16 wk of age.
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Opportunities for exercise during pullet rearing, Part II: Long-term effects on bone characteristics of adult laying hens at the end-of-lay.
T. M. Casey-Trott,D. R. Korver,Michele T. Guerin,Victoria Sandilands,Stephanie Torrey,Tina M. Widowski +5 more
TL;DR: Increased opportunities for exercise offered by the aviary rearing system provided improved bone quality characteristics lasting through to the end‐of‐lay in Avi hens.
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Explanations for keel bone fractures in laying hens: are there explanations in addition to elevated egg production?
Michael J. Toscano,Ian C. Dunn,Jens Peter Christensen,Stefanie Petow,Käthe Elise Kittelsen,Reiner Ulrich +5 more
TL;DR: Four broad areas that could explain variation and increased fractures independent of or complementing elevated and sustained egg production are identified: the age at first egg, late ossification of the keel, predisposing bone diseases, and inactivity leading to poor bone health.
References
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Hen welfare in different housing systems
Donald C. Lay,R. M. Fulton,Patricia Y. Hester,Darrin M. Karcher,Joergen Kjaer,Joy A. Mench,Bradley A. Mullens,Ruth C. Newberry,Christine J Nicol,Neil P. O'Sullivan,Robert E. Porter +10 more
TL;DR: It appears that no single housing system is ideal from a hen welfare perspective and any attempt to evaluate the sustainability of a switch to an alternative housing system requires careful consideration of the merits and shortcomings of each housing system.
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Good Maintenance of Exercise-Induced Bone Gain with Decreased Training of Female Tennis and Squash Players: A Prospective 5-Year Follow-Up Study of Young and Old Starters and Controls
Saija A. Kontulainen,Pekka Kannus,Heidi Haapasalo,Harri Sievänen,Matti Pasanen,A. R. I. Heinonen,Pekka Oja,Ilkka Vuori +7 more
TL;DR: Findings that an exercise‐induced bone gain can be well maintained with decreased activity and that the maintenance of the bone gain is independent of the starting age of activity, exercise can be recommended for preventing osteoporosis and related fractures are confirmed.
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Changes in bone mineral content with decreased training in competitive young adult tennis players and controls: a prospective 4-yr follow-up.
Saija A. Kontulainen,Pekka Kannus,Heidi Haapasalo,Ari Heinonen,Harri Sievänen,Pekka Oja,Ilkka Vuori +6 more
TL;DR: This study suggests that bone gain obtained by regular tennis training does not disappear by time despite decreased playing activity, and regular exercise can be valuable for maximizing peak bone mass and thus contributing to prevention of osteoporosis and related fractures later in life.
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Inheritance of bone characteristics affecting osteoporosis in laying hens.
TL;DR: The results imply that selection for enhanced bone strength can be used as a long-term strategy for alleviating the problems of osteoporosis in laying hens.
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Influence of housing system and design on bone strength and keel bone fractures in laying hens
LJ Wilkins,J.L. McKinstry,N. C. Avery,Toby G Knowles,Steven N Brown,John F Tarlton,Christine J Nicol +6 more
TL;DR: The main objectives of the study were to provide an accurate assessment of current levels of old breaks in end-of-lay hens housed in a variety of system designs and identify the important risk factors.