Journal of Animal Science and Technology

Korean Society of Animal Sciences and Technology (한국축산학회)
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Night feeding in lactating sows is an essential management approach to decrease the detrimental impacts of heat stress

  • Choi, YoHan (Swine Division, National Institute of Animal Science, Rural Development Administration) ;
  • Moturi, Joseph (College of Animal Life Sciences, Kangwon National University) ;
  • Hosseindoust, Abdolreza (College of Animal Life Sciences, Kangwon National University) ;
  • Kim, MinJu (College of Animal Life Sciences, Kangwon National University) ;
  • Kim, KwangYeol (College of Animal Life Sciences, Kangwon National University) ;
  • Lee, JunHyung (College of Animal Life Sciences, Kangwon National University) ;
  • Song, ChangHyun (College of Animal Life Sciences, Kangwon National University) ;
  • Kim, YoungHwa (Swine Division, National Institute of Animal Science, Rural Development Administration) ;
  • Chae, ByungJo (College of Animal Life Sciences, Kangwon National University)
  • Received : 2019.08.26
  • Accepted : 2019.10.21
  • Published : 2019.11.30
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Abstract

The present study investigated the litter performance of multiparous sows had different feeding frequencies during summer season. A total of 60 crossbred multiparous sows was allotted to one of two treatments based on body weight (BW) according to a completely randomized design. Two different feeding frequencies based on NRC (National Research Council) were applied as conventional feeding (T1; 2 kg per meal at 06:00, 11:00, and 17:00) and night feeding (T2; 1.5 kg per meal at 06:00, 11:00, 17:00, and 2 kg at 22:00). Sows in T2 treatment had lower (p < 0.05) BW changes during lactation. The backfat thickness change of sows was decreased in T2 treatment during lactation (p < 0.05). The daily feed intake differed significantly between T1 and T2 with increased feed intake of the T2 group at 5.47 kg/d to 5.14 kg/d in the T1 group (p < 0.05). There was a significant difference in total weight of weaned piglets between T1 (70.50 kg) and T2 (74.34 kg). A greater total litter weight gain was observed in sows in T2 treatment. Night feeding is suggested for lactating sows with significant beneficial effects on litter growth during summer season.

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References

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