| A series of two, trials were conducted to investigate the effects of Non-starch polysaccharides(NSP) and Resistant starch(RS) on performance, diarrhea frequency, apparent digestibility, feces pH, density of various bacterial populations and the physiological and biochemical parameters in blood in the diets of young weaned piglets.The first experiment was undertaken to study the effects of different NSP contents in the diets of young weaned piglets. In this experiment we choose 26-28 days old, 72 weaned piglets(Duroc X Landrance X Large) which were divided into three groups and every groups had three pens which had eight piglets, fed diets with 2%, 5%, 8% sugar-beet pulp respectively.The results showed: (1)Adding 5% SBP (contents of NSP 8%), the ADG of piglets was respectively increased 9.71 % and 6.94% compared with 2% and 8% groups in whole period. In whole period, the feed-meet ratio of 2 % group was the lowest which decreased only 0.69% compared with 5% group, and which decreased 3.97% compared with 8% group. (2)With the NSP contents increasing, the apparent digestibility of crude potein(CP) and crude fat(CF) reduced(P>0.05).(3)With the NSP contents increasing, pH and the total counts of coliform bacteria of feces decreased, but the total counts of lactic acid bacteria of feces increased. The diarrhea rate of piglets decreased. The feces pH of 5% group decreased 0.51 compared with 2% group and 8% group decreased 0.61 compared with 2% group(P<0.05).(4) With the NSP contents increasing, the total counts of coliform bacteria of feces decreased.8% group was decreased 12.5% compared with 2% (P>0.05)and 3.5% compared with 5% group(P<0.05).And the counts of Lactobacterium increased. 8% group' almost had no diarrhea.(5) With the NSP contents increasing, the counts of WEC and MCHC increased.(6) The Blood Uinary Nitrogen(BUN) in serum of 5% group was the lowest. It decreased 2.08 mg/dl compared with 2% group (P>0.05). The blood sugar of 8% group decreased 6.10 mmol/L compared with 2% group. (7)The serum IgG and GH of 5% group increased significantly than others and the immune action improved.(8)During four weeks , 5% group decreased the cost of gaining weight, each decreased 0.04 and 0.26 RMB/kg respectively compared with 2% group and 8% group.The second part was formulated to study the effects of the different kinds of NSP andRS in the diets of the weaned piglets. The experimental diets consisted of four kinds of diets. 96 crossbred piglets aged from 26~28d(DurocXLandranceX Large) were randomly divided into four groups for 28 days assay respectly. Each group had three replicatly. The control group(C)was fed with basal diet of adding antibiotic , the other 3 group were fed with rich-INSP diet (wheat bran, W), rich-SNSP (sugar-beet pulp, S) and rich-RS and low-NSP without adding antibiotic(potato pulp, P). The results showed: (l)Adding sugar-beet pulp and potato pulp groups, the average daily gain(ADG) of piglets was respectively increased 9.9% and 14.5% compared with the control group in whole period. The adding wheat bran group decreased 5.7% compared with the control group. (2) The feed-meet ratio of S group and P group was decreased 1.40% and 5.59% compared with C group. (3)The SNSP and RS decreased pH of feces , increased the total counts of lactic acid bacteria of feces and the total counts of coliform bacteria of feces. (4)The effects of the SNSP and RS in the diets on diarrhea rate was consist with the control group (P> 0.05). (5)The S group decreased the apparent digestibility of main nutrient, but the effect of RS was not significant. (6)The counts of white cells decreased and serum IgG increased, the immune action improved. (7) The SNSP and RS decreased the contents of Blood Uinary .Nitrogen(BUN), TG and blood sugar, improved the concention of GH, T3 and T4. So, NSP and RS instituting to antibiotic in diets of weaned piglets had the better effects.(8)The W group is not fit for the weaned piglets.
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