Kim Kwangwook, Kim Byeonghyeon, Kyoung Hyunjin, Liu Yanhong, Campbell Joy M, Song Minho, Ji Peng
Department of Animal Science, University of California, Davis, CA 95616, USA.
Animal Nutrition & Physiology Team, National Institute of Animal Science, Rural Development Administration, Wanju 55365, Korea.
J Anim Sci Technol. 2021 Sep;63(5):1076-1085. doi: 10.5187/jast.2021.e83. Epub 2021 Sep 30.
The study was conducted to evaluate the effects of spray-dried plasma (SDP) supplementation during late gestation and lactation on productive performance and immune responses of sows and their litters. Twelve sows (227.78 ± 2.16 kg average body weight; 2.0 average parity) were randomly allotted to two dietary treatments: a basal diet (CON) and the basal diet supplemented with 1% SDP. Sows were fed experimental diets from d 30 before farrowing to weaning of their piglets. Blood samples were collected from sows on d 1, 3, and 7 of lactation and from two randomly selected nursing pigs per litter on d 3 and 7 after birth, and d 1, 3, and 7 after weaning. Productive performance and immune responses of sows and their piglets were measured. There was a trend of less body weight loss in sows supplemented with SDP ( < 0.10) during the lactation period and a trend of greater ( < 0.10) average daily gain in SDP piglets compared to those in the CON group. Sows in the SDP group tended to have lower ( < 0.10) serum concentrations of tumor necrosis factor-α (TNF-α), transforming growth factor-β1 (TGF-β1), and cortisol on d 3 and lower serum concentration of TNF-α on d 7 compared with sows in CON group. In comparison with CON piglets, piglets from SDP sows tended to have lower ( < 0.10) serum concentrations of TNF-α, TGF-β1, and cortisol on d 7 after birth, lower ( < 0.10) serum TNF-α and C-reactive protein on d 3 and 7 after weaning, and greater ( < 0.10) average daily gain after weaning. Moreover, weaned pigs from sows fed SDP had significantly lower ( < 0.05) serum concentrations of cortisol and TGF-β1 on d 3 and 7 postweaning, respectively, than CON piglets. In conclusion, SDP supplementation in sow diets from late gestation to weaning improved the productive performance of sows and their offspring; the beneficial effects of SDP may be mediated in part through modulation of immune responses of both sows and piglets.
本研究旨在评估妊娠后期和哺乳期补充喷雾干燥血浆（SDP）对母猪及其仔猪生产性能和免疫反应的影响。将12头母猪（平均体重227.78±2.16千克；平均胎次2.0）随机分配到两种日粮处理组：基础日粮（CON）和添加1% SDP的基础日粮。母猪从分娩前30天至仔猪断奶期间饲喂试验日粮。在泌乳第1、3和7天采集母猪血液样本，在出生后第3和7天、断奶后第1、3和7天从每窝随机选择的两头哺乳仔猪采集血液样本。测定母猪及其仔猪的生产性能和免疫反应。与CON组相比，补充SDP的母猪在泌乳期体重损失有减少趋势（P<0.10），SDP组仔猪平均日增重有增加趋势（P<0.10）。与CON组母猪相比，SDP组母猪在第3天血清肿瘤坏死因子-α（TNF-α）、转化生长因子-β1（TGF-β1）和皮质醇浓度有降低趋势（P<0.10），在第7天血清TNF-α浓度降低。与CON组仔猪相比，SDP组母猪的仔猪在出生后第7天血清TNF-α、TGF-β1和皮质醇浓度有降低趋势（P<0.10），在断奶后第3和7天血清TNF-α和C反应蛋白浓度降低（P<0.10），断奶后平均日增重增加（P<0.10）。此外，饲喂SDP的母猪所产断奶仔猪在断奶后第3和7天血清皮质醇和TGF-β1浓度分别显著低于CON组仔猪（P<0.05）。总之，从妊娠后期到断奶期间在母猪日粮中补充SDP可提高母猪及其后代的生产性能；SDP的有益作用可能部分通过调节母猪和仔猪的免疫反应来介导。
