Effects Of Corn Ddgs And Allzyme Ssf On Blood Biochemical Indicator, Antioxidation And Gut Health In Growing-Finishing Pigs

DDGS has become a concerned hot spot in feed industry for these few years. Corn DDGS which contains high protein, fibre, fat and other nutritional ingredient has been utilized widely in feed industry. However, concentration of mycotoxins in corn DDGS are three times as they are in corn, and high level of mycotoxin do have some negative effect to the health of animals even people. But on the other hand, yeast cell component, the residual of fermentation may obsorb mycotoxins and enhance the beneficial bacteria of intestine, and it plays a positive role in animal growth. This paper was conducted to investigate the effect of corn DDGS and allzyme SSF on growth performance, blood biochemical indicator, antioxidation and intestinal health in growing-finishing pigs, and pay more attention to the probable toxic effect of mycotoxins and the probable positive effect of yeast cell wall in corn DDGS. The whole experiment was divided into three parts:Section1:The feeding trial was conducted to investigate the effects of corn DDGS and allzyme SSF supplementation on growth performance, blood biochemical indicator in growing-finishing pigs.200pigs (Duroc x Landrace×Yorkshire) at the age of70days, with an average initial body weight of28.75±3.11kg, were randomly allotted to four dietary treatments on the basis of body weight and gender. The control dietary was a basic corn-soybean meal diet. Treatment1,2and3were corn-soybean meal-DDGS diet, with10%corn DDGS in growing phase and15%in finishing phase, respectively.200g/T of SSF was added to the diets of treatment2and3and the energy level of treatment3was reduced50kcal/kg. Detect the activity of GPT, GOT, AKP and y-GT in plasma and the contents of AFB1, ZEA and DON of each diet. The result of blood biochemical indicator showed that the activity of GOT and GPT in plasma of T3was significantly higher (P<0.05). From the detection result of mycotoxins in the diets, we can see that contents of AFB1, ZEA and DON in treatment diets which supplemented with corn DDGS were higher than those of control group. Especially ZEA contents in treatments and corn DDGS and DON levels in T3and com DDGS were higher than the maximum permissible dosage of National Hygienical Standard for Feeds. The results indicated that mycotoxins were concentrated in corn DDGS, and it brought some injury to the liver of G-F pigs.Section2:This experiment investigated the effects of com DDGS and allzyme SSF supplementation on antioxidation in G-F pigs. The design and group of this experiment is the same as Expl. Activity of SOD and GSH-Px, level of MDA and total antioxidation capability (T-AOC) of plasma and homogenate were detected. The result showed that, GSH-Px, SOD activity and T-AOC in plasma of treatments with supplementation of com DDGS tended to reduce as compare to control group, while MDA contents were increased, especially T3, was significantly higher than that of control group (P<0.05). SOD and GSH-Px activity and T-AOC in homogenate of3treatments were generally lower than those of control group, and MDA content of each treatment of those four tissues were higher than control group. It can be concluded that the higher content of unsaturated fatty acid in corn DDGS and concentrated mycotoxins in fermentation residue negatively affected the antioxidation of G-F pigs.Section3:This experiment was conducted to investigate the effects of corn DDGS and allzyme SSF supplementation on gut health in growing-finishing pigs through morphology observation and plate count of LAB and E.coli. The design and group of this experiment is the same as Expl. Results showed that, the number of LAB in hindgut was increased with the supplementation of corn DDGS, especially in the fattening phase, while E.coli quantities were decreased in three treatments as compare with control group (P<0.05). In addition, villi/crypt ratio of T2was higher than control group and other two treatments while T3was the lowest. The results indicated, feeding corn DDGS and allzyme SSF had the trend of increasing the number of LAB and had significant effect on reducing the number of E coli. But on the other hand, mycotoxins in the diet had negative effect on the intestinal condition, and more or less injured the integrality of intestine.