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The effects of regular visual contact with human beings on fear, stress, antibody and growth responses in broiler chickens

This study investigated the effects of regular visual contact at various ages on tonic immobility (TI) and heterophil/lymphocyte ratio (HLR) reactions to handling and crating, antibody production, growth performance, and feed conversion ratios in commercial broiler chicks. Broiler chicks were expose...

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Main Authors: Idrus, Zulkifli, Gilbert, Jeffrey J., Liew, Pit Kang, Ginsos, J.
Format: Article
Language:English
English
Published: Elsevier 2002
Online Access:http://psasir.upm.edu.my/id/eprint/40382/1/The%20effects%20of%20regular%20visual%20contact%20with%20human%20beings%20on%20fear%2C%20stress%2C%20antibody%20and%20growth%20responses%20in%20broiler%20chickens.pdf
http://psasir.upm.edu.my/id/eprint/40382/7/1-s2.0-S0168159102001351-main.pdf
http://psasir.upm.edu.my/id/eprint/40382/
http://www.sciencedirect.com/science/article/pii/S0168159102001351
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spelling my.upm.eprints.403822024-07-26T09:29:36Z http://psasir.upm.edu.my/id/eprint/40382/ The effects of regular visual contact with human beings on fear, stress, antibody and growth responses in broiler chickens Idrus, Zulkifli Gilbert, Jeffrey J. Liew, Pit Kang Ginsos, J. This study investigated the effects of regular visual contact at various ages on tonic immobility (TI) and heterophil/lymphocyte ratio (HLR) reactions to handling and crating, antibody production, growth performance, and feed conversion ratios in commercial broiler chicks. Broiler chicks were exposed to (1) visual contact with an experimenter for 10 min twice daily from 0 to 3 weeks (V0–3), (2) visual contact with an experimenter for 10 min twice daily from 0 to 6 weeks (V0–6), (3) visual contact with an experimenter for 10 min twice daily from 3 to 6 weeks (V3–6) and (4) no visual contact (NV), as control. At 42 days of age, the birds were captured and crated for 10 min. Following, the 10 min crating, the V0–3 and V0–6 birds had shorter TI duration and lower HLR than those of NV. Although, the HLR response of V3–6 birds to crating were similar to their V0–3 and V0–6 counterparts, the latter two groups were less fearful, as measured by TI duration. Subjecting birds to V0–3 and V0–6 enhanced antibody response to Newcastle disease vaccine. Regular visual contact had negligible influence on body weight, feed conversion ratios and survivability of birds. Collectively, the results suggest that regular visual contact from 1 to 21 days of age is sufficient to reduce fear and stress reactions to handling and crating, and improve antibody response in broiler chickens. Elsevier 2002-10 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/40382/1/The%20effects%20of%20regular%20visual%20contact%20with%20human%20beings%20on%20fear%2C%20stress%2C%20antibody%20and%20growth%20responses%20in%20broiler%20chickens.pdf text en http://psasir.upm.edu.my/id/eprint/40382/7/1-s2.0-S0168159102001351-main.pdf Idrus, Zulkifli and Gilbert, Jeffrey J. and Liew, Pit Kang and Ginsos, J. (2002) The effects of regular visual contact with human beings on fear, stress, antibody and growth responses in broiler chickens. Applied Animal Behaviour Science, 79 (2). pp. 103-112. ISSN 0168-1591; ESSN: 1872-9045 http://www.sciencedirect.com/science/article/pii/S0168159102001351 10.1016/S0168-1591(02)00135-1
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
English
description This study investigated the effects of regular visual contact at various ages on tonic immobility (TI) and heterophil/lymphocyte ratio (HLR) reactions to handling and crating, antibody production, growth performance, and feed conversion ratios in commercial broiler chicks. Broiler chicks were exposed to (1) visual contact with an experimenter for 10 min twice daily from 0 to 3 weeks (V0–3), (2) visual contact with an experimenter for 10 min twice daily from 0 to 6 weeks (V0–6), (3) visual contact with an experimenter for 10 min twice daily from 3 to 6 weeks (V3–6) and (4) no visual contact (NV), as control. At 42 days of age, the birds were captured and crated for 10 min. Following, the 10 min crating, the V0–3 and V0–6 birds had shorter TI duration and lower HLR than those of NV. Although, the HLR response of V3–6 birds to crating were similar to their V0–3 and V0–6 counterparts, the latter two groups were less fearful, as measured by TI duration. Subjecting birds to V0–3 and V0–6 enhanced antibody response to Newcastle disease vaccine. Regular visual contact had negligible influence on body weight, feed conversion ratios and survivability of birds. Collectively, the results suggest that regular visual contact from 1 to 21 days of age is sufficient to reduce fear and stress reactions to handling and crating, and improve antibody response in broiler chickens.
format Article
author Idrus, Zulkifli
Gilbert, Jeffrey J.
Liew, Pit Kang
Ginsos, J.
spellingShingle Idrus, Zulkifli
Gilbert, Jeffrey J.
Liew, Pit Kang
Ginsos, J.
The effects of regular visual contact with human beings on fear, stress, antibody and growth responses in broiler chickens
author_facet Idrus, Zulkifli
Gilbert, Jeffrey J.
Liew, Pit Kang
Ginsos, J.
author_sort Idrus, Zulkifli
title The effects of regular visual contact with human beings on fear, stress, antibody and growth responses in broiler chickens
title_short The effects of regular visual contact with human beings on fear, stress, antibody and growth responses in broiler chickens
title_full The effects of regular visual contact with human beings on fear, stress, antibody and growth responses in broiler chickens
title_fullStr The effects of regular visual contact with human beings on fear, stress, antibody and growth responses in broiler chickens
title_full_unstemmed The effects of regular visual contact with human beings on fear, stress, antibody and growth responses in broiler chickens
title_sort effects of regular visual contact with human beings on fear, stress, antibody and growth responses in broiler chickens
publisher Elsevier
publishDate 2002
url http://psasir.upm.edu.my/id/eprint/40382/1/The%20effects%20of%20regular%20visual%20contact%20with%20human%20beings%20on%20fear%2C%20stress%2C%20antibody%20and%20growth%20responses%20in%20broiler%20chickens.pdf
http://psasir.upm.edu.my/id/eprint/40382/7/1-s2.0-S0168159102001351-main.pdf
http://psasir.upm.edu.my/id/eprint/40382/
http://www.sciencedirect.com/science/article/pii/S0168159102001351
_version_ 1805889941619605504
score 13.211869

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