日粮中添加番茄渣对围产期奶牛抗氧化性能的影响

试验旨在研究日粮中添加番茄渣发酵饲料对围产期奶牛抗氧化性能的影响。选择体质均匀，预产期、体重、胎次和泌乳量相近的围产期奶牛16头，随机分为2组，每组8头，对照组饲喂常规全混合日粮（TMR），试验组在日粮中添加番茄渣发酵饲料（围产前期13%，围产后期11%）。预试期14 d，正试期 60 d（产前30 d至产后30 d）。结果显示，与对照组相比，围产后期试验组奶牛产奶量显著提高（P<0.05）；整个试验阶段，试验组奶牛血清GSH-Px、T-SOD和T-AOC活力均高于对照组，其中，围产前期试验组GSH-Px、T-SOD和T-AOC活力显著提高（P<0.05），与围产前期相比，围产后期GSH-Px、T-SOD和T-AOC活力等抗氧化指标均呈下降趋势，围产后期试验组奶牛MDA含量较对照组显著降低（P<0.05），但围产前期和围产后期间无显著差异（P>0.05）；与对照组相比，围产后期试验组红细胞、血红蛋白浓度、尿素氮、低密度胆固醇、铁含量均显著提高（P<0.05）；其他指标两组间差异均不显著（P>0.05）。综上所述，日粮中添加番茄渣发酵饲料对围产期奶牛机体的抗氧化性能和产奶量有一定提高作用。

Effect of Addition Tomato Pomace on the Antioxidant Properties of Perinatal Dairy Cows

This study was aimed to investigate the effect of feed supplemented with fermented tomato pomace on the antioxidant properties of perinatal dairy cows.Sixteen dairy cows with similar physical,prenatal period,body weight,parity and lactation yield were divided into two groups with 8 dairy cows per group.The dairy cows in control group were fed TMR regular diet and that of experimental group was fed diet supplemented with fermented tomato pomace (13% in pre-partum period and 11% in post-partum period).The preliminary trial period was 14 d and trial period lasted for 60 d (30 d before delivery to 30 d after delivery). The results showed that compared with control group,the milk yield of dairy cows of experimental group in post-partum period was significantly increased (P<0.05);In the whole trail period,the activity of GSH-Px,T-SOD and T-AOC in experimental group were increased,and that in pre-partum period were significantly increased (P<0.05),while compared with pre-partum period,that in post-partum period showed a downward trend.The MDA content of experimental group in post-partum period was significantly decreased (P<0.05),there was no significant difference between pre-partum period and post-partum period (P>0.05);Compared with control group,the contents of white blood cells,hemoglobin,urea nitrogen, low density lipoprotein and Fe of experimetal group in post-partum period were significantly increased (P<0.05),and other indexes had no significant differences (P>0.05).In conclusion,diet supplemented with fermented tomato pomace had a certain improvement effect on the antioxidant properties and milk yield of dairy cows in the perinatal period.