Hot chickens need cool water
In Spore 38 page 10 we carried the above news item which reported on research in Israel into the beneficial effects of giving laying hens cool drinking water to avoid heat stress. Dr Musharaf of the University of Gezira, Sudan has sent a report of an experiment conducted in a climate chamber to study the effects of water temperature and feed density on the production characteristics of laying hens during heat stress. Following a preliminary period of adaptation pullets of 25 weeks of age were moved to the climate chamber and maintained at 38°C from 08.00 to 17.00 hours and 28°C from 17.00 to 08.00 hours at a constant 55% relative humidity. Groups of birds on a low density diet with either cool running water of 7°C or warm stagnant water one °C lower than ambient temperature were compared to birds on a high density diet who also had available either the cool or warm stagnant water. Cool water and high density feed improved feed consumption, egg weight, feed efficiency and final body weight. Apart from egg weight, other egg quality characteristics were not affected by water temperature. Dr N A Musharaf Department of Animal Science University of Gezira PO Box 20 Wad Medani SUDAN
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| Format: | News Item biblioteca |
| Language: | English |
| Published: |
Technical Centre for Agricultural and Rural Cooperation
1993
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| Online Access: | https://hdl.handle.net/10568/45921 http://collections.infocollections.org/ukedu/en/d/Jcta43e/ |
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| Summary: | In Spore 38 page 10 we carried the above news item which reported on research in Israel into the beneficial effects of giving laying hens cool drinking water to avoid heat stress.
Dr Musharaf of the University of Gezira, Sudan has sent a report of an experiment conducted in a climate chamber to study the effects of water temperature and feed density on the production characteristics of laying hens during heat stress. Following a preliminary period of adaptation pullets of 25 weeks of age were moved to the climate chamber and maintained at 38°C from 08.00 to 17.00 hours and 28°C from 17.00 to 08.00 hours at a constant 55% relative humidity.
Groups of birds on a low density diet with either cool running water of 7°C or warm stagnant water one °C lower than ambient temperature were compared to birds on a high density diet who also had available either the cool or warm stagnant water.
Cool water and high density feed improved feed consumption, egg weight, feed efficiency and final body weight. Apart from egg weight, other egg quality characteristics were not affected by water temperature.
Dr N A Musharaf Department of Animal Science University of Gezira PO Box 20 Wad Medani SUDAN |
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