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http://dx.doi.org/10.5187/jast.2022.e33

Effects of various cooling methods and drinking water temperatures on reproductive performance and behavior in heat stressed sows  

Habeeb, Tajudeen (Department of Bio-Health Convergence, Kangwon National University)
Joseph, Moturi (Department of Bio-Health Convergence, Kangwon National University)
Abdolreza, Hosseindoust (Department of Bio-Health Convergence, Kangwon National University)
SangHun, Ha (Department of Bio-Health Convergence, Kangwon National University)
Jun Young, Mun (Department of Bio-Health Convergence, Kangwon National University)
YoHan, Choi (Swine Division, National Institute of Animal Science, Rural Development Administration)
SooJin, Sa (Swine Division, National Institute of Animal Science, Rural Development Administration)
JinSoo, Kim (Department of Animal Industry Convergence, Kangwon National University)
Publication Information
Journal of Animal Science and Technology / v.64, no.4, 2022 , pp. 782-791 More about this Journal
Abstract
The purpose of this study is to evaluate the effects of multiple cooling systems and different drinking water temperatures (DWT) on the performance of sows and their hair cortisol levels during heat stress. In this study, the effect of four different cooling systems: air conditioner (AC), cooling pad (CP), snout cooling (SC), and mist spray (MS), and two DWT, namely low water temperature (LWT) and high water temperature (HWT) on 48 multiparous sows (Landrace × Yorkshire; 242.84 ± 2.89 kg) was tested. The experiment is based on the use of eight replicas during a 21-days test. Different behaviors were recorded under different cooling treatments in sows. As a result, behaviors such as drinking, standing, and position change were found to be lower in sows under the AC and CP treatments than in those under the SC and MS treatments. Lying behavior increased under the AC and CP systems as compared with that under the SC and MS, systems. The average daily feed intake (ADFI) in sows and weight at weaning in piglets was higher under the AC, CP, and LWT treatments than under the SC, MS and HWT treatments. Sows subjected to SC and MS treatment showed higher hair cortisol levels, rectal temperature, and respiratory rate during lactation than those under AC and CP treatments. Hair cortisol levels, rectal temperature, and respiratory rate were also higher under the HWT than under the LWT treatment. As per the results of this study, the LWT has no significant effect on any of the behavioral factors. Taken together, the use of AC and CP cooling treatment is highly recommended to improve the behavior and to reduce the stress levels in lactating sows.
Keywords
Temperature-humidity index; Water temperature; Cortisol; Cooling system; Lactation; Piglets;
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Times Cited By KSCI : 3  (Citation Analysis)
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