Research On The Application Of Xylo-oligosaccharides In The Production Of Meat Ducks

This study use the single factor fully-random experiment design,200one-day-oldhealthy meat ducks were selected and randomly divided into four groups, including thecontrol group and three test groups.4mg/Kg flavomycin was added to the basal diet of meatducks in control group.0.005%,0.01%and0.02%XOS was added to the basal diet of meatducks in the groupⅠ, groupⅡand group Ⅲ, respectively. Different proportions of XOS wereadded in the basal diet of meat ducks to study its effects on the growth performance, bloodbiochemical indexes and serum enzyme activity, and to investigate the effects of XOS on themeat ducks. The results were as follows:1.The average daily gain of1-3week-old meat ducks in theⅠ, ⅡandⅢ groupincreased1.36g,0.75g and0.61g, and2.63%,1.45%and1.18%respectively than control group.But there was no significant difference among different groups (P>0.05). Besides, feed-meatratio was reduced in the test groups compared with the control group, but the differencebetween each test group was not significant either (P>0.05). Compared with control group,the average daily gain of4-6week-old meat ducks in theⅡgroup increased7.21g, which wassignificantly higher than theⅠgroup and Ⅲ group (P <0.01); the average daily gain of theⅠand Ⅲ group increased1.79g and2.46g than control group significatively (P <0.05); Theaverage daily gain of4-6week-old meat ducks in theⅠ, ⅡandⅢ group increased3.61%,14.55%and4.96%, while feed-meat ratio reduced3.82%,14.4%and6.5%.2.For l-6week-old meat ducks(the whole raising period),the average daily gain of meatducks in test groups was higher than that in control group and the feed-meat ratio was lowerthan that in control group,especially the average daily gain of the Ⅱgroup increased3.98g (P<0.01); the average daily gain of theⅠand Ⅲ group increased1.57g and1.53g (P <0.05);the average daily gain of the Ⅰ, Ⅱ and Ⅲ group increased3.1%,7.9%and3.02%respectively, feed-meat ratio of three groups reduced2.42%,9.34%and4.15%respectively,theⅡgroup was significantly better than other groups (P <0.05).It indicates that the basal dietof meat ducks with0.01%XOS can increase the average daily gain and reduce feed-meat ratio.0.01%XOS can increase growth performance of meat ducks.3. Serum total protein content of the test groups was higher than control group. Serum total protein content of theⅡgroup was more significative than control group (P <0.05), butthere was no significant difference among different groups (P>0.05). Serum urea nitrogencontent of test groups was lower than control group, and the Ⅱgroup was significativelylower than the control group and theⅠgroup (P <0.05), the difference between other testgroups were not significant either (P>0.05). There was no significative between test groupsand control group about serum cholesterol content (P>0.05), while the Ⅱ group had thelowest serum cholesterol content.4. Test groups had lower activity of serum glutamic oxalacetic transaminase andglutamic-pyruvic transaminase than control group, but there was no significant differenceamong different groups (P>0.05). The Ⅱ group got the lowest serum glutamic oxalacetictransaminase and glutamic-pyruvic transaminase activity (P <0.05). It can conclude that XOScan enhance the protection of meat ducks' heart and liver,0.01%XOS is the suitableconcentration in diet.All in all,0.01%XOS in basal diet can improve the growth performance, nutrient useefficiency and intestinal microecological balance, make full use of the growth potential ofmeat ducks.