Coating Compound Trace Elements Affecting Growth Performance, Fecal Trace Elements Contents and Intestinal Mucosal Morphology of Yellow Broilers

doi:10.11924/j.issn.1000-6850.casb16060158

Abstract

Abstract: This experiment was conducted to study the effects of coating compound trace mineral on growth performance, fecal trace mineral content and intestinal tract morphology in yellow broilers. [Method] 375 one-day-old yellow broilers were randomly allocated to 5 groups with 5 replicates per group and 15 chicks per replicate. Group Ⅰ as Control group was fed basal diet with conventional trace mineral. Group Ⅱ to Ⅴ were fed basal diet with 200 mg·kg-1, 300 mg·kg-1, 400 mg·kg-1, 500 mg·kg-1 coating compound trace mineral. The experiment lasted 4 weeks. The growth performance, fecal trace mineral content and intestinal tract morphology of yellow broilers were tested. [Result]The results were showed as followed. The feed-weight ratio of yellow broilers of group Ⅲ compared with control group was not significant, so as the group Ⅳ and groupⅤ. The feed-weight ratio of yellow broilers of group Ⅱ improved than the control group(P<0.05). The differences of average daily gain and average daily feed intake of each group were not significant. Compared with control group, trace mineral of group Ⅱ decreased iron(Fe) of fecal trace mineral content(P<0.05) and copper (Cu), manganese (Mn) and zinc (Zn) decreased significantly(P<0.01). Group Ⅲ decreased the content of Cu, Fe, Mn and Zn in fecal trace mineral significantly compared with group Ⅰ(P<0.01). The content of Fe and Mn in the fecal trace mineral of group Ⅳ decreased significantly compared with groupⅠ(P<0.01). The content of Mn and Zn in fecal trace mineral of group Ⅴ decreased significantly compared with groupⅠ(P<0.01). The crypt depth of duodenal of group Ⅳ reduced significantly (P<0.05)and the ratio of villus height to crypt depth significantly increased compared with groupⅠ(P<0.05). [Conclusion] Conclusion, rations of yellow broilers used coating compound trace mineral instead of conventional trace mineral can decrease the content of trace mineral and didn’t affect the growth performance of yellow broilers. It can decrease the content of trace mineral in fecal and promote the ratio of villus height to crypt depth of duodenal. The appropriate additive dosage was between 300mg·kg-1 and 400mg·kg-1.

CLC Number:

S831.5

Zhang Min,Ren Xin,Ke Furong,Ma Zengxin and Wang Changkang. Coating Compound Trace Elements Affecting Growth Performance, Fecal Trace Elements Contents and Intestinal Mucosal Morphology of Yellow Broilers[J]. Chinese Agricultural Science Bulletin, 2017, 33(17): 108-112.

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