两种酶制剂与三种益生菌协同对种鸭生产性能的影响

本研究旨在探究酶和益生菌对不同周龄种鸭生产性能的影响。选取33周龄和70周龄樱桃谷肉种鸭各4棚,设置酶加益生菌制剂组(菌酶复合组)、酶制剂组、菌制剂组、对照组共4组。前三组按照500 g/t的剂量分别加入酶加益生菌制剂、酶制剂、菌制剂,对照组饲喂基础饲粮。饲喂周期46 d。统计各组种蛋的平均蛋重、可孵率、正品率、破蛋率、无精蛋率、孵化率。试验结果表明,1)蛋重:不同周龄菌酶复合组与酶剂组差异不显著(P<0.05),与菌剂组和对照组均有明显差异(P<0.05)。2)可孵率、无精蛋率:不同周龄菌酶复合组与酶剂组和菌剂组无显著差异(P>0.05),与对照组均有明显差异(P<0.05)。3)正品率:70周龄菌酶复合组与酶剂组无明显差异(P>0.05),与菌剂组和对照组均有明显差异(P<0.05);33周龄菌酶复合组与酶剂组、菌剂组和对照组均无明显差异(P>0.05)。4)破蛋率:不同周龄菌酶复合组与菌剂组无明显差异(P>0.05),与酶剂组和对照组均有明显差异(P<0.05)。5)无精蛋率:不同周龄菌酶复合组与酶剂组、菌剂组均无显著差异(P>0.05),与对照组差异显著(P<0.05)。6)孵化率:70周龄菌酶复合组与酶剂组、菌剂组均无显著差异(P>0.05),与对照组差异显著(P<0.05);33周龄菌酶复合组与酶剂组无显著差异(P>0.05),与菌剂组和对照组差异显著(P<0.05)。上述研究结果表明:酶与益生菌联合应用能够有效的延缓高周龄种鸭生产性能的衰退,同时还能够促进低周龄种鸭生产性能的升高。

Joint effects of two enzyme preparations and three probiotics on the performance of breeding ducks

This study was to investigate the joint effects of enzymes and probiotics on the performance of breeding ducks at different ages.Four sheds of 33-week-old Yingtaogu broiler ducks and four shreds of 70-week-old ducks were chosen as the subjects,and the ducks were assigned to the following groups:the mixed enzymes and probiotics group,the enzyme preparation group,the probiotics preparation group,and the control group.The diets of the three experimental groups were supplemented with 500 g/t of each of the designed preparations,and the control group was fed with the basic diet.The experiment lasted for 46 days.For every three days,measures were taken of the eggs of the ducks in terms of average weight,hatchability,authenticity rate,egg breaking rate,unfertilized egg rate and hatching rate.The results were as follows:1)For both age groups of ducks,the difference in egg weight between the mixed enzymes and probiotics group and the enzyme preparation group was not significant(P<0.05),but it was significantly different between the mixed enzymes and probiotics group and the probiotics and control groups(P<0.05).2)For ducks at both ages,there was no significant difference in the incubation rate of eggs between the mixed enzymes and probiotics group and the enzyme preparation group and probiotics groups(P>0.05),but it was significantly different between the mixed enzymes and probiotics group and the control group(P<0.05).3)For the 70 week old ducks,there was no significant different in authenticity rate of eggs between the mixed enzymes and probiotics group and the enzyme preparation group,but was of significant difference between the mixed enzymes and probiotics group and the enzyme preparation and control groups(P<0.05).For ducks of 33 weeks old,there was no significant difference in authenticity rate between the mixed enzymes and probiotics group and the enzyme preparation,probiotics preparation and control groups(P>0.05).4)For both the 70 weeks old and 33 weeks old ducks,no significant difference in the damage rate of eggs was found between the mixed enzymes and probiotics group and the probiotics preparation group(P>0.05),but it was significantly different between the mixed enzymes and probiotics group and the enzyme preparation and the control groups(P<0.05).5)For ducks of both age groups,there was no significant difference in the unfertilized rate of eggs between the mixed enzymes and probiotics group and the enzyme and probiotics groups(P>0.05),but it was significantly different the mixed enzymes and probiotics group and the control group(P<0.05).6)For the 70 week old ducks,there was no significant difference in hatching rate between the mixed enzymes and probiotics groups and the enzyme and bacterial groups(P>0.05),but it was significantly different the mixed enzymes and probiotics group and the control group(P<0.05).For the 33 week old ducks,there was no significant difference between the mixed enzymes and probiotics group and the enzyme preparation group(P>0.05),but it was significantly different between the mixed enzymes and probiotics group and the probiotics and control groups(P<0.05).The above results indicate that the combination of enzyme and probiotics effectively delayed the decline of production performance of older-aged ducks,and also promoted the production performance of younger-aged breeders.