{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,16]],"date-time":"2026-01-16T20:20:09Z","timestamp":1768594809638,"version":"3.49.0"},"reference-count":49,"publisher":"Oxford University Press (OUP)","issue":"11","license":[{"start":{"date-parts":[[2019,9,23]],"date-time":"2019-09-23T00:00:00Z","timestamp":1569196800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/journals\/pages\/open_access\/funder_policies\/chorus\/standard_publication_model"}],"funder":[{"DOI":"10.13039\/501100012453","name":"China Agricultural Research System","doi-asserted-by":"publisher","award":["CARS-40"],"award-info":[{"award-number":["CARS-40"]}],"id":[{"id":"10.13039\/501100012453","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["31601981"],"award-info":[{"award-number":["31601981"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2019,11,4]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Colony cages are commonly used in China for the natural mating of layer breeders. However, feather pecking (FP) is a major problem in this system, and feather damage mainly due to FP needs to be alleviated. The objective of this study was to investigate the effects of nest boxes provided in colony cages. Each colony cage confined 10 roosters and 90 laying hens. The use of nest boxes as it relates to age, feather damage, sexual behavior, fertility, and fearfulness was evaluated. Thyroid hormones, which are considered to be physiological indicators of various forms of stress in poultry and may be correlated with the quality of feather coverage, were also tested. The control group and the nest box group each had 12 replicates, totaling 24 identical cages. Analyses were conducted using the linear mixed models procedure of SPSS Statistics 22.0. The results showed that the control group had a significantly higher proportion of hens with feather damage to 4 specific body regions (back, rump, tail, and belly) compared to the nest box group (P &lt; 0.05). Increasing the use of the nest boxes took place from weeks 41 to 47 and at 53 wk of age, as seen by the percentage of eggs and number of sitting events in the nests, number of hens using the nests, and frequency of visits. There were no significant differences in fertility, the occurrence of mounting, or full copulation behavior between the 2 groups. Hens in the control group showed a significantly longer duration of tonic immobility at 43, 49, and 55 wk of age (P &lt; 0.05). No significant differences were found between groups for the concentration of triiodothyronine or thyroxine, but a significantly higher concentration of corticosterone was measured in the control group than in the nest box group (P &lt; 0.05). In conclusion, hens with access to nest boxes during the laying period had a decreased FP frequency, fewer damaged feathers, lower plasma corticosterone secretion, and were less fearful. This information contributes to the understanding of the FP behavior and stress sensitivity of layer breeders, which will provide a basis for the development and optimization of the colony cage equipment.<\/jats:p>","DOI":"10.1093\/jas\/skz301","type":"journal-article","created":{"date-parts":[[2019,10,30]],"date-time":"2019-10-30T14:51:18Z","timestamp":1572447078000},"page":"4464-4474","source":"Crossref","is-referenced-by-count":5,"title":["Effects of nest boxes in natural mating colony cages on fear, stress, and feather damage for layer breeders123"],"prefix":"10.1093","volume":"97","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5368-4969","authenticated-orcid":false,"given":"Haipeng","family":"Shi","sequence":"first","affiliation":[{"name":"College of Water Resources & Civil Engineering, China Agricultural University, Beijing, China"},{"name":"Key Laboratory of Agricultural Engineering in Structure and Environment, Beijing, China"},{"name":"Beijing Engineering Research Center on Animal Healthy Environment, Beijing, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qin","family":"Tong","sequence":"additional","affiliation":[{"name":"College of Water Resources & Civil Engineering, China Agricultural University, Beijing, China"},{"name":"Key Laboratory of Agricultural Engineering in Structure and Environment, Beijing, China"},{"name":"Beijing Engineering Research Center on Animal Healthy Environment, Beijing, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Weichao","family":"Zheng","sequence":"additional","affiliation":[{"name":"College of Water Resources & Civil Engineering, China Agricultural University, Beijing, China"},{"name":"Key Laboratory of Agricultural Engineering in Structure and Environment, Beijing, China"},{"name":"Beijing Engineering Research Center on Animal Healthy Environment, Beijing, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jiang","family":"Tu","sequence":"additional","affiliation":[{"name":"College of Water Resources & Civil Engineering, China Agricultural University, Beijing, China"},{"name":"Key Laboratory of Agricultural Engineering in Structure and Environment, Beijing, China"},{"name":"Beijing Engineering Research Center on Animal Healthy Environment, Beijing, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Baoming","family":"Li","sequence":"additional","affiliation":[{"name":"College of Water Resources & Civil Engineering, China Agricultural University, Beijing, China"},{"name":"Key Laboratory of Agricultural Engineering in Structure and Environment, Beijing, China"},{"name":"Beijing Engineering Research Center on Animal Healthy Environment, Beijing, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"286","published-online":{"date-parts":[[2019,9,23]]},"reference":[{"key":"2019110511060254000_CIT0001","doi-asserted-by":"publisher","first-page":"333","DOI":"10.1080\/00071660310001598085","article-title":"Strain and age differences in behaviour, fear response and pecking tendency in laying hens","volume":"44","author":"Albentosa","year":"2003","journal-title":"Br. 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