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The purpose of this experiment is to study the effects of inulin on the digestive tract of the Roosters lay the theoretical foundation for inulin can be used as a feed additive. Rooster 30 were selected and 40 weeks of age, the parents on behalf of the Highland brown eggs, were randomly divided into five groups, each with 6 chickens. The experimental group (A, B, C, D), respectively, with 0.5%, 1.0%, 1.5% and 2.0% inulin alternative basal diet moderate amount of corn, E group for the control group, fed the basal diet. Enter the formal trial period, every five days to collect feces, respectively Ⅰ, Ⅱ, Ⅲ, Ⅳ and Ⅴ. Official test period of 25 days after the head the cervical off section method lethal sampling. Our results show that: 1. Within group Ⅱ only group D ratio B, C, group E fecal moisture content significantly significantly increase the (P LT; 0.05), A, B of and C group and the content of moisture in the feces of group E No significant difference (P gt; 0.05). Ⅰ, Ⅲ, Ⅳ, Ⅴ group diets supplemented with different concentrations of inulin on fecal water affect the difference was not statistically significant (P gt; 0.05). The results show that the diets supplemented with inulin egg cock faeces moisture. Compared with control group, B group is highly significant increase of the moisture content of the crop in the contents (P LT; 0.01), the C group was significantly improved the moisture content in the crop (P LT; 0.05). Group A and Group D on crop moisture contents (P gt; 0.05). The moisture in group B gizzard contents significantly increased compared with the control group (P lt; 0.05), the other test groups gizzard moisture affect (P gt; 0.05). Inulin on the water in the jejunum, duodenum and cecal contents had no significant effect (P gt; 0.05). 2. Crop pH value of each experimental group, Group E (control group) difference is not significant (P gt; 0.05). Inulin on crop pH value. A, B, D group cecal contents pH values ??are significantly lower than the E group (control group) (P lt; 0.05), the pH value of the test group C was significantly lower than the E group (control group) (P lt; 0.01) but not significantly lower than the A, B and D (P gt; 0.05). This result indicates that inulin can reduce the pH of the cecal contents of values, but the influence of the added amount is smaller. In group Ⅰ, Ⅱ, Ⅳ, adding inulin feces pH value Roosters with the control group, the difference was not significant (P gt; 0.05). Group Ⅲ only D group compared with the control group, a very significantly reduced fecal pH value (P lt; 0.01), the other test group and the control group, the difference was not significant (P gt; 0.05). Therefore, no effect of inulin on fecal pH value. 3 compared with the control group, the Roosters diet add 2.0% inulin, could significantly improve crop propionic acid (P lt; 0.01), significantly increased the content of acetic acid (P lt; 0.05), other the added amount can be increased acetic acid, propionic acid, butyric acid, but the difference was not statistically significant (P gt; 0.05). This indicates that the inulin can be degraded in the crop to produce volatile fatty acids. D group can make the cecal butyrate content was significantly higher (P lt; 0.05), and the other test group of acetic acid, propionic acid, butyric acid, isobutyric acid content had no significant impact (P gt; 0.05) . Add inulin cecal total volatile fatty acids and no significant impact (P gt; 0.05). Inulin is possible to reduce the proportion of acetic acid and propionic acid in the cecum, increase the proportion of butyrate in the cecum, but isobutyrate proportion does not exist regularity. That inulin degradation can increase butyrate proportion in the cecum, in particular, to add 2% inulin effect. 4. Inulin the duodenum, the jejunum and cecum apparent digestibility of dry matter were higher trend. Ⅰ, Ⅱ, Ⅲ, Ⅳ and Ⅴ group compared with the E group (control group), C group were highly significant increase apparent protein digestibility (P lt; 0.01). Other test groups can improve the apparent digestibility of protein, but not as good as the C group effect is significant. In summary, inulin can reduce cecal pH value, improve the utilization of crop and muscular stomach contents of moisture and cock on protein utilization and intestinal dry matter, the inulin can affect the amount of volatile fatty acids in the crop and cecum and proportion. Thus, inulin can be used as a feed additive.
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