本试验旨在研究酵解乳化饲料对哺乳母猪生产性能、免疫力及饲粮养分消化的影响。选取胎次、预产期相近的长×大母猪160头,随机分成5个组(对照组、麦芽糊精和葡萄糖组、发酵豆粕组、乳化脂肪组、酵解乳化饲料组),每组4个重复,每重复8头。对照组母猪饲喂基础饲粮;麦芽糊精和葡萄糖组饲粮中添加1.5%麦芽糊精+1.5%葡萄糖;发酵豆粕组、乳化脂肪组、酵解乳化饲料组饲粮中分别添加5.0%发酵豆粕、3.0%乳化脂肪、10.0%酵解乳化饲料。试验从妊娠108 d开始,妊娠114 d分娩,至仔猪28日龄断奶时结束,共34 d。结果表明:1)与对照组、麦芽糊精和葡萄糖组、发酵豆粕组、乳化脂肪组相比,酵解乳化饲料组母猪的平均日采食量分别提高了7.08%(P<0.05)、5.88%(P>0.05)、5.78%(P>0.05)、4.83%(P>0.05),母猪断奶后发情间隔分别缩短了26.58%(P<0.01)、15.94%(P<0.05)、10.77%(P<0.05)、9.38%(P<0.05),断奶仔猪平均日增重分别提高了10.78%(P<0.01)、5.15%(P>0.05)、8.20%(P<0.05)、3.55%(P>0.05),28日龄仔猪成活率分别提高了6.14%(P<0.05)、0.78%(P>0.05)、2.09%(P>0.05)、2.83%(P>0.05)。2)与对照组相比,酵解乳化饲料组母猪血清免疫球蛋白(Ig)A、IgG、IgM含量,植物血凝素淋巴细胞转化率分别提高了23.93%(P<0.01)、39.17%(P<0.05)、19.28%(P<0.05)、17.64%(P<0.01),皮质醇含量降低了5.97%(P<0.05)。3)添加酵母乳化饲料后,哺乳母猪对饲粮粗脂肪、有机物、总能的表观消化率分别提高了4.93%、4.78%、5.10%,差异均显著(P<0.05)。结果提示,酵解乳化饲料能提高哺乳母猪的生产性能、饲粮中部分养分表观消化率,增强哺乳母猪的免疫力,尤其是细胞免疫与体液免疫。

In order to study the effects of glycolysis and emulsification feed on performance, immunity and dietary nutrient digestion of lactating sow, a total of 160 sows (Landrace×Yorkshine) with similar parity and due date were randomly assigned to 5 groups with 4 replicates in each group and 8 sows in each replicate. The 5 groups were control group, malt dextrin and glucose group, fermented soybean meal group, emulsifying fat group, and glycolysis and emulsification feed group. Sows in control group was fed a basal diet, and those in malt dextrin and glucose group, fermented soybean meal group, emulsifying fat group and glycolysis and emulsification feed group were fed diets containing 1.5% malt dextrin+1.5% glucose, 5.0% fermented soybean meal, 3.0% emulsifying fat and 10.0% glycolysis and emulsification feed, respectively. The experiment lasted for 34 days, which from begining of 108 days of pregnancy (parturition in 114 days of pregnancy), and at the end of piglet weaning of 280-day-old. The results showed as follows: 1) compared with the control group, malt dextrin and glucose group, fermented soybean meal group and emulsifying fat group, the average daily feed intake of lactating sows in glycolysis and emulsification feed group was increased by 7.08% (P<0.05), 5.88% (P>0.05), 5.78% (P>0.05) and 4.83% (P>0.05), after weaning to estrus interval of lactating sows was short by 26.58% (P<0.01), 15.94% (P<0.05), 10.77% (P<0.05) and 9.38% (P<0.05), average daily gain of weaning piglets was increased by 10.78% (P<0.01), 5.15% (P>0.05), 8.20% (P<0.05) and 3.55% (P>0.05), and survival rate of 28-day-old piglets was increased by 6.14% (P<0.05), 0.78% (P>0.05), 2.09% (P>0.05) and 2.83% (P>0.05), respectively. 2) The content of serum immunoglobulin (Ig) A, IgG, IgM and phytohemagglutinin (PHA) lymphocyte transformation rate of lactating sows in glycolysis and emulsification feed group were increased by 23.93% (P<0.01), 39.17% (P<0.05), 19.28% (P<0.05) and 17.64% (P<0.01), respectively, while the content of serum cortisol was decreased by 5.97% (P<0.05) than those in the control group. 3) Compared with the control group, the apparent digestibility of ether extract, organic matter and gross energy in glycolysis and emulsification feed group was significantly increased by 4.93%, 4.78% and 5.10%, respectively, and the differences were significant (P<0.05). The results indicate that glycolysis and emulsification feed can improve the lactating sow' performance and apparent digestibility of some dietary nutrients, and enhance immune function, especially in cellular immunity and humoral immunity.