Effects Of Compound Probiotics Fermentation Broth On Performance,blood And Milk Composition Of Lactating Sows

This test was conducted to investigate the effects of compound probiotics fermentation broth on production performance,serum and milk composition and get the most suitable level to seek safe and reliable additives.A total of 48 large white pregnant sows were randomly arranged into 4 groups with 12 replicates per group and 1 sow per replicate.The control group was fed a basal diet,and three trial groups were fed the basal diet supplemented with 200 and 300 and 400 mL/d compound probiotics fermentation broth,the trial was from 7 days of antenatal to 21 days weaning.The results showed that:(1)The average daily intake and 21-days lactation yield of sows in the 300 and 400 mL/d compound probiotics fermentation broth group were significantly higher than control group(P<0.05).The backfat loss of sows was significantly lower than control group(P<0.05).The average daily weight gain of piglets in 300 compound probiotics fermentation broth group was significantly higher than other groups(P<0.05),and the diarrhea rate of piglets was significantly lower than control group(P<0.05).The diarrhea rate of each compound probiotics fermentation broth group was significantly lower than control group(P<0.05).The compound probiotics fermentation broth can effectively improve the constipation of lactation sows.(2)At the 10 th day of lactation,the total protein content of 300 mL/d compound probiotics fermentation broth group was significantly higher than control group(P<0.05).At the 21 th day of lactation,the serum glucose of 300 and 400 mL/d compound probiotic fermentation broth group were significantly higher than control group(P<0.05).(3)At the 10 th day of lactation,the serum IgG and IgM of each compound probiotics fermentation broth group were significantly higher than control group(P<0.05).At the 21 th day of lactation,the serum IgA and IgM of each compound probiotics fermentation broth group were significantly higher than control group(P<0.05).The serum IgG of 400 mL/d compound probiotic fermentation broth group was significantly higher than control group(P < 0.05).The serum interleukin-2 of 300 mL/d compound probiotic fermentation broth group was significantly higher than control group(P<0.05).The serum interleukin-6 of 300 and 400 mL/d compound probiotic fermentation broth group was significantly higher than control group(P<0.05).(4)At the 10 th day of lactation,the serum superoxide dismutase of the 300 and 400 mL/d level compound probiotic fermentation broth were significantly higher than control group and 200 mL/d level(P<0.05),the serum malondialdehyde of the 300 and 400 mL/d level compound probiotic fermentation broth were significantly lower than control group(P<0.05).At the 21 st day of lactation,the serum superoxide dismutase of 300 mL/d compound probiotic fermentation broth was significantly higher than control group(P<0.05).(5)The colostrum insulin of 400 mL/d level compound probiotic fermentation broth was significantly higher than control group and 200 mL/d level(P<0.05).At the 10 th day of lactation,the milk fat of 300 mL/d level compound probiotic fermentation broth was significantly higher than other groups(P<0.05),the lactoprotein and total solids were significantly higher than control group(P < 0.05),the lactose of each compound probiotics fermentation broth group was significantly higher than control group(P<0.05).At the 21 th day of lactation,the milk fat and total solids of each compound probiotics fermentation broth group were significantly higher than control group(P<0.05),the lactoprotein of 300 mL/d level compound probiotic fermentation broth was significantly higher than control group(P<0.05).In a word,compound probiotics fermentation broth effectively improved the lactating sows' production performance,enhanced the immune performance and antioxidant capacity and increased the milk component.300 mL/d is the most suitable level.