Effects of feeding fermented Glycyrrhiza uralensis stems and leaves on serum biochemical,immune,and antioxidant indexes in dairy cows during dry milk period
WU Taiping
ZHA Laga
DU Juan
LI Xia
LIU Na
QI Jingwei
AN Xiaoping
Abstract：This experiment aimed to investigate the effects of adding fermented Glycyrrhiza uralensis stems and leaves(FGSL)to the diet on the serum biochemical,immune,and antioxidant indexes in dairy cows during the dry milk period.A total of 60 healthy Chinese Holstein dairy cows with two to three parities and similar body condition were selected and randomly divided into two groups,with 15 replicates per group and two cows per replicate.The control group(group CON)was fed a basal diet,while the experimental group(group FGSL)received the basal diet supplemented with 1 kg/(head·d)of FGSL.The pre-test period was three days,and the formal test period was 36 days.The results showed that compared with group CON,the concentrations of glucose(GLU)and albumin(ALB)in the serum of the FGSL group were significantly increased(P＜0.05).The concentrations of triglycerides(TG),total cholesterol(TC),low-density lipoprotein(LDL),β-hydroxybutyrate(BHBA),concentrations(CREA),haptoglobin(HP),amyloid A(SAA),and total bilirubin(TBIL),and the activities of aspartate aminotransferase(AST)and alanine aminotransferase(ALT)were significantly reduced(P＜0.05).The concentrations of serum immunoglobulin A(IgA),immunoglobulin G(IgG),immunoglobulin M(IgM),interleukin-2(IL-2),total antioxidant capacity(T-AOC),and the activities of catalase(CAT),glutathione peroxidase(GSH-Px),and superoxide dismutase(SOD)in group FGSL were significantly increased(P＜0.05),the concentrations of interleukin-6(IL-6),tumor necrosis factor-alpha(TNF-α),and malondialdehyde(MDA)were significantly decreased(P＜0.05).The study indicates that adding FGSL to the diet can effectively improve the energy metabolism level and enhance the antioxidant capacity and immune function of dairy cows during the dry milk period.
Keywords：dairy cows during the dry milk periodfermented Glycyrrhiza uralensis stems and leavesantioxidant capacityimmune function
Publication Date：2025-10-28
Online Publishing Date：2025-12-29(First online date of this platform, not the publication date of the document)
Pages：5( 22-26 )