Effects of ground robot manipulation on hen floor egg reduction, production performance, stress response, bone quality, and behavior
Reducing floor eggs in cage-free (CF) housing systems is among primary concerns for egg producers. The objective of this research was to evaluate the effects of ground robot manipulation on reduction of floor eggs. In addition, the effects of ground robot manipulation on production performance, stre...
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description | Reducing floor eggs in cage-free (CF) housing systems is among primary concerns for egg producers. The objective of this research was to evaluate the effects of ground robot manipulation on reduction of floor eggs. In addition, the effects of ground robot manipulation on production performance, stress response, bone quality, and behavior were also investigated. Two successive flocks of 180 Hy-Line Brown hens at 34 weeks of this age were used. The treatment structure for each flock consisted of six pens with three treatments (without robot running, with one-week robot running, and with two-weeks robot running), resulting in two replicates per treatment per flock and four replicates per treatment with two flocks. Two phases were involved with each flock. Phase 1 (weeks 35-38) mimicked the normal scenario, and phase 2 (weeks 40-43) mimicked a scenario after inadvertent restriction to nest box access. Results indicate that the floor egg reduction rate in the first two weeks of phase 1 was 11.0% without the robot treatment, 18.9% with the one-week robot treatment, and 34.0% with the two-week robot treatment. The effect of robot operation on floor egg production was not significant when the two phases of data were included in the analysis. Other tested parameters were similar among the treatments, including hen-day egg production, feed intake, feed conversion ratio, live body weight, plasma corticosterone concentration, bone breaking force, ash percentage, and time spent in nest boxes. In conclusion, ground robot operation in CF settings may help to reduce floor egg production to a certain degree for a short period right after being introduced. Additionally, robot operation does not seem to negatively affect hen production performance and well-being. |
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The objective of this research was to evaluate the effects of ground robot manipulation on reduction of floor eggs. In addition, the effects of ground robot manipulation on production performance, stress response, bone quality, and behavior were also investigated. Two successive flocks of 180 Hy-Line Brown hens at 34 weeks of this age were used. The treatment structure for each flock consisted of six pens with three treatments (without robot running, with one-week robot running, and with two-weeks robot running), resulting in two replicates per treatment per flock and four replicates per treatment with two flocks. Two phases were involved with each flock. Phase 1 (weeks 35-38) mimicked the normal scenario, and phase 2 (weeks 40-43) mimicked a scenario after inadvertent restriction to nest box access. Results indicate that the floor egg reduction rate in the first two weeks of phase 1 was 11.0% without the robot treatment, 18.9% with the one-week robot treatment, and 34.0% with the two-week robot treatment. The effect of robot operation on floor egg production was not significant when the two phases of data were included in the analysis. Other tested parameters were similar among the treatments, including hen-day egg production, feed intake, feed conversion ratio, live body weight, plasma corticosterone concentration, bone breaking force, ash percentage, and time spent in nest boxes. In conclusion, ground robot operation in CF settings may help to reduce floor egg production to a certain degree for a short period right after being introduced. Additionally, robot operation does not seem to negatively affect hen production performance and well-being.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0267568</identifier><identifier>PMID: 35452500</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>Agriculture ; Animal welfare ; Behavior ; Bioengineering ; Biology and Life Sciences ; Birds ; Body weight ; Boxes ; Conversion ratio ; Corticosterone ; Dermatitis ; Egg industry ; Egg production ; Eggs ; Engineering ; Engineering and Technology ; Evaluation ; Farms ; Feed conversion ; Housing ; Management ; Medicine and Health Sciences ; Methods ; Nest boxes ; Poultry ; Radio frequency identification ; Robots ; Running ; Social Sciences</subject><ispartof>PloS one, 2022-04, Vol.17 (4), p.e0267568-e0267568</ispartof><rights>COPYRIGHT 2022 Public Library of Science</rights><rights>This is an open access article, free of all copyright, and may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose. 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Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c692t-2940946db2c9aaaa71258a96cbb22ae4ca4c4f1ebf61bbc394d0d0bad46c60f23</citedby><cites>FETCH-LOGICAL-c692t-2940946db2c9aaaa71258a96cbb22ae4ca4c4f1ebf61bbc394d0d0bad46c60f23</cites><orcidid>0000-0001-7624-8051</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC9032375/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC9032375/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,315,728,781,785,865,886,2103,2929,23871,27929,27930,53796,53798</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/35452500$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><contributor>Balasubramanian, Balamuralikrishnan</contributor><creatorcontrib>Li, Guoming</creatorcontrib><creatorcontrib>Hui, Xue</creatorcontrib><creatorcontrib>Zhao, Yang</creatorcontrib><creatorcontrib>Zhai, Wei</creatorcontrib><creatorcontrib>Purswell, Joseph L</creatorcontrib><creatorcontrib>Porter, Zach</creatorcontrib><creatorcontrib>Poudel, Sabin</creatorcontrib><creatorcontrib>Jia, Linan</creatorcontrib><creatorcontrib>Zhang, Bo</creatorcontrib><creatorcontrib>Chesser, Gary D</creatorcontrib><title>Effects of ground robot manipulation on hen floor egg reduction, production performance, stress response, bone quality, and behavior</title><title>PloS one</title><addtitle>PLoS One</addtitle><description>Reducing floor eggs in cage-free (CF) housing systems is among primary concerns for egg producers. The objective of this research was to evaluate the effects of ground robot manipulation on reduction of floor eggs. In addition, the effects of ground robot manipulation on production performance, stress response, bone quality, and behavior were also investigated. Two successive flocks of 180 Hy-Line Brown hens at 34 weeks of this age were used. The treatment structure for each flock consisted of six pens with three treatments (without robot running, with one-week robot running, and with two-weeks robot running), resulting in two replicates per treatment per flock and four replicates per treatment with two flocks. Two phases were involved with each flock. Phase 1 (weeks 35-38) mimicked the normal scenario, and phase 2 (weeks 40-43) mimicked a scenario after inadvertent restriction to nest box access. Results indicate that the floor egg reduction rate in the first two weeks of phase 1 was 11.0% without the robot treatment, 18.9% with the one-week robot treatment, and 34.0% with the two-week robot treatment. The effect of robot operation on floor egg production was not significant when the two phases of data were included in the analysis. Other tested parameters were similar among the treatments, including hen-day egg production, feed intake, feed conversion ratio, live body weight, plasma corticosterone concentration, bone breaking force, ash percentage, and time spent in nest boxes. In conclusion, ground robot operation in CF settings may help to reduce floor egg production to a certain degree for a short period right after being introduced. Additionally, robot operation does not seem to negatively affect hen production performance and well-being.</description><subject>Agriculture</subject><subject>Animal welfare</subject><subject>Behavior</subject><subject>Bioengineering</subject><subject>Biology and Life Sciences</subject><subject>Birds</subject><subject>Body weight</subject><subject>Boxes</subject><subject>Conversion ratio</subject><subject>Corticosterone</subject><subject>Dermatitis</subject><subject>Egg industry</subject><subject>Egg production</subject><subject>Eggs</subject><subject>Engineering</subject><subject>Engineering and Technology</subject><subject>Evaluation</subject><subject>Farms</subject><subject>Feed conversion</subject><subject>Housing</subject><subject>Management</subject><subject>Medicine and Health Sciences</subject><subject>Methods</subject><subject>Nest boxes</subject><subject>Poultry</subject><subject>Radio frequency 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behavior</atitle><jtitle>PloS one</jtitle><addtitle>PLoS One</addtitle><date>2022-04-22</date><risdate>2022</risdate><volume>17</volume><issue>4</issue><spage>e0267568</spage><epage>e0267568</epage><pages>e0267568-e0267568</pages><issn>1932-6203</issn><eissn>1932-6203</eissn><abstract>Reducing floor eggs in cage-free (CF) housing systems is among primary concerns for egg producers. The objective of this research was to evaluate the effects of ground robot manipulation on reduction of floor eggs. In addition, the effects of ground robot manipulation on production performance, stress response, bone quality, and behavior were also investigated. Two successive flocks of 180 Hy-Line Brown hens at 34 weeks of this age were used. The treatment structure for each flock consisted of six pens with three treatments (without robot running, with one-week robot running, and with two-weeks robot running), resulting in two replicates per treatment per flock and four replicates per treatment with two flocks. Two phases were involved with each flock. Phase 1 (weeks 35-38) mimicked the normal scenario, and phase 2 (weeks 40-43) mimicked a scenario after inadvertent restriction to nest box access. Results indicate that the floor egg reduction rate in the first two weeks of phase 1 was 11.0% without the robot treatment, 18.9% with the one-week robot treatment, and 34.0% with the two-week robot treatment. The effect of robot operation on floor egg production was not significant when the two phases of data were included in the analysis. Other tested parameters were similar among the treatments, including hen-day egg production, feed intake, feed conversion ratio, live body weight, plasma corticosterone concentration, bone breaking force, ash percentage, and time spent in nest boxes. In conclusion, ground robot operation in CF settings may help to reduce floor egg production to a certain degree for a short period right after being introduced. Additionally, robot operation does not seem to negatively affect hen production performance and well-being.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>35452500</pmid><doi>10.1371/journal.pone.0267568</doi><tpages>e0267568</tpages><orcidid>https://orcid.org/0000-0001-7624-8051</orcidid><oa>free_for_read</oa></addata></record> |
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subjects | Agriculture Animal welfare Behavior Bioengineering Biology and Life Sciences Birds Body weight Boxes Conversion ratio Corticosterone Dermatitis Egg industry Egg production Eggs Engineering Engineering and Technology Evaluation Farms Feed conversion Housing Management Medicine and Health Sciences Methods Nest boxes Poultry Radio frequency identification Robots Running Social Sciences |
title | Effects of ground robot manipulation on hen floor egg reduction, production performance, stress response, bone quality, and behavior |
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