Abstract
A silvopasture system intentionally integrates trees, forages, and livestock, allowing dual land use. These systems can provide high-quality habitat for broiler chickens; however, such systems have not been widely adopted by the broiler industry in the United States. The objective of this study was to examine the effect of silvopasture versus open pasture access on fearfulness and leg health in fast-growing broiler chickens. A total of 886 mixed-sex Ross 708 chicks in Experiment 1 (Exp 1) and 648 chicks in Experiment 2 (Exp 2) were housed in coops and had access to 16 (Exp 1) or 12 (Exp 2) 125m2 silvopasture plots (x̄ = 32% canopy cover) or open pasture plots (no canopy cover) from day 24 of age. Fearfulness was measured using a tonic immobility test (tonic immobility duration), and leg health was assessed by quantifying footpad dermatitis, hock burns, gait, and performing a latency-to-lie test on days 37–39 of age. Birds in the silvopasture treatment were less fearful than birds in the open pasture treatment. Overall, birds in both silvopasture and open pasture systems had excellent leg health. Silvopasture birds had lower footpad dermatitis scores than open pasture birds. Silvopasture birds tended to have worse gait than open pasture birds in Exp 1, but not in Exp 2. Hock burn scores and latency-to-lie did not differ between treatments in Exp 1 or Exp 2. Raising birds in silvopasture reduced fear and improved footpad health compared to birds raised in open pastures, which indicates that silvopasture systems provide some benefits for affective state and leg health in fast-growing broilers.
Funder
Southern SARE
Southern SARE - James Harrison Hill, Sr. Young Scholar Enhancement Grant
EcoFriendly Foods LLC
Publisher
Public Library of Science (PLoS)
Reference64 articles.
1. USDA. Guidelines for organic certification of poultry ☯Internet]. Vermont USA; 2014 ☯updated 2014: cited 2022 Sept 19].1–5. Available from: https://www.ams.usda.gov/sites/default/files/media/Poultry%20-%20Guidelines.pdf.
2. USDA. Does the label “free range” pertain only to poultry or also to meats? ☯Internet]. 2019 ☯updated 2019 Jul 17: cited 2022 Sept 19]. Available from: https://ask.usda.gov/s/article/Does-the-label-free-range-pertain-only-to-poultry-or-also-to-meats.
3. Animal welfare aspects of outdoor runs for laying hens: A review;U. Knierim;NJAS—Wageningen J Life Sci,2006
4. The impact of broiler production system practices on consumer perceptions of animal welfare;J De Jonge;Poult Sci,2013
5. Belgian citizens’ and broiler producers’ perceptions of broiler chicken welfare in Belgium versus Brazil.;F Vanhonacker;Poult Sci,2016
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