花椰菜尾菜发酵饲料对保育猪生长性能、血清生化指标、小肠组织形态及经济效益的影响

为研究花椰菜尾菜发酵饲料对保育猪生长性能、血清生化指标、小肠组织形态及经济效益的影响。选取42头体重相近（11.40±1.36） kg、体况良好的40日龄保育猪，随机分为两组，每组3个重复，每个重复7头。对照组饲喂基础饲粮，试验组饲喂由80%基础饲粮和20%花椰菜尾菜发酵饲料组成的试验饲粮。试验共30 d，其中预试期8 d，正试期22 d。结果表明：与对照组相比，1）试验组保育猪的平均日采食量和平均日增重分别显著提高了16.50%和18.68%（P<0.05），腹泻率显著降低了74.35%（P<0.05）。2）试验组保育猪十二指肠、空肠、盲肠、结肠和直肠食糜pH值分别显著降低了19.16%、11.59%、14.09%、15.95%和11.23%（P<0.05）。3）试验组血清尿素氮、白蛋白、免疫球蛋白M的含量显著升高了69.84%、5.22%、100%（P<0.05），血清总胆固醇、谷丙转氨酶的含量分别显著降低了29.43%、60.51%（P<0.05）。4）试验组保育猪的空肠绒毛高度/隐窝深度和回肠绒毛高度分别显著升高了13.64%和11.49%（P<0.05），空肠隐窝深度显著降低了9.56%（P<0.05）。5）试验组每头猪的增重收益、毛利润分别显著提高了30.84%和44.48%（P<0.05），饲料成本显著降低了21.58%（P<0.05）。综上所述，饲喂花椰菜尾菜发酵饲料能够降低保育猪的腹泻率，提高保育猪的生长性能，增强其免疫性能，促进肠道发育，提高经济效益。

Effects of feeding fermented cauliflower residue on growth performance,serum biochemical indices,intestinal tissue morphology and economic returns of nursery pigs

This study was conducted to investigate the effects of feeding fermented cauliflower residue on growth performance， serum biochemical indices， intestinal tissue morphology and economic returns of nursery pigs. A total of 42 nursery pigs aged 40 days with similar body weight （11.40±1.36） kg and good body condition were randomly allocated to two treatment groups （Control， 20% fermented cauliflower， FC）， with three replicates per treatment group and seven pigs per replicate. The experiment duration was 30 d， including 8 d pre-test and 22 d of testing. Pigs in the Control treatment group were fed a basal diet and pigs in the experimental group were fed the basal diet （80%） and fermented cauliflower residue （20%）. It was found that， compared with the Control treatment group： 1） The average daily feed intake and average daily gain in the FC group were significantly increased by 16.50% and 18.68% （P<0.05）， respectively， while the occurrence of diarrhea was reduced by 74.35% （P<0.05）. 2） The pH of chyme in duodenum， jejunum， cecum， colon and rectum of cultured pigs in experimental group was significantly decreased by 19.16%， 11.59%， 14.09%， 15.95% and 11.23%， respectively （P<0.05）. 3） The serum urea， globulin and immunoglobulin-M in the experimental group were increased （P<0.05） by 69.84%， 5.22% and 100%， respectively， while serum total cholesterol and alanine aminotransferase in the experimental group were significantly reduced （P<0.05） by 29.43% and 60.51%， respectively. 4） The villus height/crypt depth for the jejunum and villus height in the ileum in the experimental group were increased （P<0.05） by 13.64% and 11.49% respectively， while the crypt depth of the jejunum in the experimental group was decreased （P<0.05） by 9.56%. 5） The body weight gain and gross profit per pig in the experimental group were increased （P<0.05） by 30.84% and 44.48%， respectively， while the feed cost in the experimental group was decreased （P<0.05） by 21.58%. In conclusion， feeding of fermented cauliflower residue decreased the occurrence of diarrhea in nursery pigs， improved growth performance， enhanced immune function， promoted intestinal development， and improved the economic returns of nursery pigs.