Effects of moist litter, perches, and droppings pit on fluctuating asymmetry, tonic immobility duration, and heterophil-to-lymphocyte ratio of laying hens
The purpose of this study was to analyze the effects of moist litter, perches, and droppings pit on the fluctuating asymmetry, the tonic immobility duration, and the heterophillymphocyte ratio of laying hens. In experiment 1, hens from 4 Spanish breeds and a White Leghorn population, that had been housed in moist or dry litter pens from 20 wk of age, were used. Treatment effect was significant for the fluctuating asymmetry of toe length (P < 0.05), the fluctuating asymmetry of hens housed in moist litter pens being larger. The duration of tonic immobility was significantly longer (P < 0.01) in hens housed in moist litter pens. Thus, litter moisture is associated with the wellbeing or fear levels of hens, as indicated by the fluctuating asymmetry and the tonic immobility duration. In experiment 2, hens from the Black Menorca breed, that had been housed in pens with or without perches from 20 wk of age, were used. The fluctuating asymmetry of wattle length and the combined fluctuating asymmetry were significantly greater (P < 0.001) in hens housed in pens without perches. Thus, the presence of perches is associated with the well-being level of birds, as indicated by the fluctuating asymmetry. In experiment 3, hens from 4 Spanish breeds and a White Leghorn population, that had been housed in pens with or without a droppings pit, were used. There was significant difference for the fluctuating asymmetry of leg length (P < 0.001) in hens housed in pens without perches. Thus, the presence of perches is associated with the well-being level of birds, as indicated by the fluctuating asymmetry. In experiment 3, hens from 4 Spanish breeds and a White Leghorn population, that had been housed in pens with or without a droppings pit, were used. There was significant difference for the fluctuating asymmetry of leg length. Thus, the presence of a droppings pit is associated with the well-being of hens, as indicated by the fluctuating asymmetry, and does not contribute to their fear or stress levels, as indicated by the tonic immobility duration and the heterophillymphocyte ratio. © 2009 Poultry Science Association Inc.
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Language: | English |
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Elsevier
2009
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Subjects: | Moist litter, Perch, Droppings pit, Well-being, Stress, |
Online Access: | http://hdl.handle.net/20.500.12792/5665 http://hdl.handle.net/10261/295099 |
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dig-inia-es-10261-2950992023-02-20T10:44:55Z Effects of moist litter, perches, and droppings pit on fluctuating asymmetry, tonic immobility duration, and heterophil-to-lymphocyte ratio of laying hens Campo, J. L. Prieto, M. T. Moist litter Perch Droppings pit Well-being Stress The purpose of this study was to analyze the effects of moist litter, perches, and droppings pit on the fluctuating asymmetry, the tonic immobility duration, and the heterophillymphocyte ratio of laying hens. In experiment 1, hens from 4 Spanish breeds and a White Leghorn population, that had been housed in moist or dry litter pens from 20 wk of age, were used. Treatment effect was significant for the fluctuating asymmetry of toe length (P < 0.05), the fluctuating asymmetry of hens housed in moist litter pens being larger. The duration of tonic immobility was significantly longer (P < 0.01) in hens housed in moist litter pens. Thus, litter moisture is associated with the wellbeing or fear levels of hens, as indicated by the fluctuating asymmetry and the tonic immobility duration. In experiment 2, hens from the Black Menorca breed, that had been housed in pens with or without perches from 20 wk of age, were used. The fluctuating asymmetry of wattle length and the combined fluctuating asymmetry were significantly greater (P < 0.001) in hens housed in pens without perches. Thus, the presence of perches is associated with the well-being level of birds, as indicated by the fluctuating asymmetry. In experiment 3, hens from 4 Spanish breeds and a White Leghorn population, that had been housed in pens with or without a droppings pit, were used. There was significant difference for the fluctuating asymmetry of leg length (P < 0.001) in hens housed in pens without perches. Thus, the presence of perches is associated with the well-being level of birds, as indicated by the fluctuating asymmetry. In experiment 3, hens from 4 Spanish breeds and a White Leghorn population, that had been housed in pens with or without a droppings pit, were used. There was significant difference for the fluctuating asymmetry of leg length. Thus, the presence of a droppings pit is associated with the well-being of hens, as indicated by the fluctuating asymmetry, and does not contribute to their fear or stress levels, as indicated by the tonic immobility duration and the heterophillymphocyte ratio. © 2009 Poultry Science Association Inc. 2023-02-20T10:44:55Z 2023-02-20T10:44:55Z 2009 journal article Poultry Science 88(4): 708-713 (2009) 0032-5791 http://hdl.handle.net/20.500.12792/5665 http://hdl.handle.net/10261/295099 10.3382/ps.2008-00435 1525-3171 en none Elsevier |
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Moist litter Perch Droppings pit Well-being Stress Moist litter Perch Droppings pit Well-being Stress |
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Moist litter Perch Droppings pit Well-being Stress Moist litter Perch Droppings pit Well-being Stress Campo, J. L. Prieto, M. T. Effects of moist litter, perches, and droppings pit on fluctuating asymmetry, tonic immobility duration, and heterophil-to-lymphocyte ratio of laying hens |
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The purpose of this study was to analyze the effects of moist litter, perches, and droppings pit on the fluctuating asymmetry, the tonic immobility duration, and the heterophillymphocyte ratio of laying hens. In experiment 1, hens from 4 Spanish breeds and a White Leghorn population, that had been housed in moist or dry litter pens from 20 wk of age, were used. Treatment effect was significant for the fluctuating asymmetry of toe length (P < 0.05), the fluctuating asymmetry of hens housed in moist litter pens being larger. The duration of tonic immobility was significantly longer (P < 0.01) in hens housed in moist litter pens. Thus, litter moisture is associated with the wellbeing or fear levels of hens, as indicated by the fluctuating asymmetry and the tonic immobility duration. In experiment 2, hens from the Black Menorca breed, that had been housed in pens with or without perches from 20 wk of age, were used. The fluctuating asymmetry of wattle length and the combined fluctuating asymmetry were significantly greater (P < 0.001) in hens housed in pens without perches. Thus, the presence of perches is associated with the well-being level of birds, as indicated by the fluctuating asymmetry. In experiment 3, hens from 4 Spanish breeds and a White Leghorn population, that had been housed in pens with or without a droppings pit, were used. There was significant difference for the fluctuating asymmetry of leg length (P < 0.001) in hens housed in pens without perches. Thus, the presence of perches is associated with the well-being level of birds, as indicated by the fluctuating asymmetry. In experiment 3, hens from 4 Spanish breeds and a White Leghorn population, that had been housed in pens with or without a droppings pit, were used. There was significant difference for the fluctuating asymmetry of leg length. Thus, the presence of a droppings pit is associated with the well-being of hens, as indicated by the fluctuating asymmetry, and does not contribute to their fear or stress levels, as indicated by the tonic immobility duration and the heterophillymphocyte ratio. © 2009 Poultry Science Association Inc. |
format |
journal article |
topic_facet |
Moist litter Perch Droppings pit Well-being Stress |
author |
Campo, J. L. Prieto, M. T. |
author_facet |
Campo, J. L. Prieto, M. T. |
author_sort |
Campo, J. L. |
title |
Effects of moist litter, perches, and droppings pit on fluctuating asymmetry, tonic immobility duration, and heterophil-to-lymphocyte ratio of laying hens |
title_short |
Effects of moist litter, perches, and droppings pit on fluctuating asymmetry, tonic immobility duration, and heterophil-to-lymphocyte ratio of laying hens |
title_full |
Effects of moist litter, perches, and droppings pit on fluctuating asymmetry, tonic immobility duration, and heterophil-to-lymphocyte ratio of laying hens |
title_fullStr |
Effects of moist litter, perches, and droppings pit on fluctuating asymmetry, tonic immobility duration, and heterophil-to-lymphocyte ratio of laying hens |
title_full_unstemmed |
Effects of moist litter, perches, and droppings pit on fluctuating asymmetry, tonic immobility duration, and heterophil-to-lymphocyte ratio of laying hens |
title_sort |
effects of moist litter, perches, and droppings pit on fluctuating asymmetry, tonic immobility duration, and heterophil-to-lymphocyte ratio of laying hens |
publisher |
Elsevier |
publishDate |
2009 |
url |
http://hdl.handle.net/20.500.12792/5665 http://hdl.handle.net/10261/295099 |
work_keys_str_mv |
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