饲粮中添加马尾藻对热应激母猪血清抗氧化能力、炎性因子、生化指标和生产性能的影响OA北大核心CSTPCD

This experiment was conducted to investigate the effects of dietary sargassum powder,sargassum powder extract,and sargassum residue on serum biochemical indexes,antioxidant capacity,and production performance of sows under heat stress.Eighty sows(Landrace x Yorkshire)with gestation age of about 107 days were randomly divided into four groups,with four replicates in each group,and five sows in each replicate.Sows were divided into group SP,group SPE-1,group SPE-2 and heat stress control group(group C).The experiment lasted for 28 days.The results showed as follows:Compared with group C,the concentrations of malondialdehyde(MDA),interleukin-1β(IL-1β),and interleukin-6(IL-6)in groups SP and SPE-1 were significantly decreased on days 14 and 28(P＜0.05).The activities of catalase(CAT)and superoxide dismutase(SOD)were significantly increased(P＜0.05).On day 14,the activities of cyclooxygenase-1(COX-1)and cyclooxygenase-1(COX-2)in groups SP and SPE-1 were significantly decreased(P＜0.05).On day 28,the content of tumor necrosis factor-α(TNF-α)was significantly decreased(P＜0.05).In addition,on days 14 and 28 of the trial,the concentrations of total bilirubin(TBIL),direct bilirubin(DBIL),indirect bilirubin(IBIL),total protein(TP),albumin(ALB),and globulin(GLB)and the activities of aspartate aminotransferase(AST),alanine aminotransferase(ALT),and alkaline phosphatase(ALP)in groups SP and SPE-1 were significantly decreased(P＜0.05).On day 28,the concentrations of urea nitrogen(BUN),creatinine(CREA),and uric acid(UA)were also significantly decreased(P＜0.05).The average daily feed intake of sows and average weight of weaned piglets in groups SP and SPE-1 were significantly increased(P＜0.05),and the number of healthy piglets produced was two more than that in group C.The results show that sargassum powder and sargassum powder extract can increase serum antioxidant capacity,improve serum biochemical indices,improve production performance and relieve heat stress of sows.