Night feeding in lactating sows is an essential management approachto decrease the detrimental impacts of heat stress

Journal of Animal Science and Technology

卷:61

Abdolreza Hosseindoust¹  JunHyung Lee¹  ChangHyun Song¹  KwangYeol Kim¹  Joseph Moturi¹  ByungJo Chae¹  MinJu Kim¹  YoHan Choi²  YoungHwa Kim² 

[1] College of Animal Life Sciences, KangwonNational University, Chuncheon 24341, Korea;

[2] Swine Division, National Institute ofAnimal Science, Rural Development Administration, Cheonan 31000,Korea;

关键词: backfat;    feeding;    heat stress;    lactating sows;    litter performance;   

DOI  :  10.5187/jast.2019.61.6.333

来源: DOAJ

【 摘 要 】

The present study investigated the litter performance of multiparous sows haddifferent feeding frequencies during summer season. A total of 60 crossbredmultiparous sows was allotted to one of two treatments based on body weight (BW)according to a completely randomized design. Two different feeding frequenciesbased 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 permeal 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 backfatthickness change of sows was decreased in T2 treatment during lactation(p < 0.05). The daily feed intake differed significantlybetween T1 and T2 with increased feed intake of the T2 group at 5.47 kg/d to5.14 kg/d in the T1 group (p < 0.05). There was asignificant 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 T2treatment. Night feeding is suggested for lactating sows with significantbeneficial effects on litter growth during summer season.

【 授权许可】

Unknown