- Volume 28 Issue 7
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Nighttime Cooling Is an Effective Method for Improving Milk Production in Lactating Goats Exposed to Hot and Humid Environment
- Sunagawa, Katsunori (Faculty of Agriculture, University of the Ryukyus) ;
- Nagamine, Itsuki (Faculty of Agriculture, University of the Ryukyus) ;
- Kamata, Yasuhiro (Faculty of Agriculture, University of the Ryukyus) ;
- Niino, Noriko (Faculty of Agriculture, University of the Ryukyus) ;
- Taniyama, Yoshihiko (Faculty of Agriculture, University of the Ryukyus) ;
- Kinjo, Kazuhide (Faculty of Agriculture, University of the Ryukyus) ;
- Matayoshi, Ayano (Faculty of Agriculture, University of the Ryukyus)
- Received : 2014.11.21
- Accepted : 2015.02.13
- Published : 2015.07.01
Heat production in ruminants follows a diurnal pattern over the course of a day peaking 3 hours following afternoon feeding and then gradually declining to its lowest point prior to morning feeding. In order to clarify the cooling period most effective in reducing decreases in feed intake and milk production, experiments were carried out based on the diurnal rhythm of heat production and heat dissipation. In experiment 1, the effects of hot environment on milk production were investigated. The animals were kept first in a thermoneutral environment (
Effective Cooling Periods;Heat Stress;Milk Production;Lactating Goats;Circadian Rhythm;Nighttime Cooling
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