低聚木糖对蛋鸡生产性能、脂类代谢及生殖机能的影响

Effects of Xylooligosaccharide on Laying Performance,Lipid Metabolism,Reproductive Function of Laying Hens

将384只30周龄伊莎褐蛋鸡随机分为2组,每组24只,8次重复。分别饲喂基础日粮(对照组)和添加100 mg/kg低聚木糖的试验日粮(低聚木糖组),试验期为4周。结果表明,添加100 mg/kg的低聚木糖对蛋鸡生产性能、器官相对重量、生殖性能及蛋黄中脂肪、胆固醇含量均无显著影响(P>0.05);但明显降低了蛋鸡血清中TG和LDL-C含量,分别降低了31.79%(P<0.05)和51.96%(P<0.01),TC、HDL-C、VLDL-C均有降低趋势;血清肝酯酶和总酯酶活性分别提高了121.96%(P<0.05)、71.26%。结果表明,低聚木糖可通过提高脂类代谢相关酶活性而发挥降脂作用。

To study the effects of xylooligosaccharide on laying performance, lipid metabolism, reproductive function of laying hens, 584 ISA brown laying hens of 50 weeks old were randomly allocated into two groups, with eight replicatesx8ind, in each group. The laying hens were fed a basal diet （control group）, or the same diet supplemented with 100 mg/kg xy- looligosaccharide （xylooligosaccharide group）. The trail lasted for 4 weeks. Results showed that compared with the control group, there was no significant difference in laying performance, organic weight, reproductive function and contents of lipid, cholesterol in egg yolk （P〉0.05）. The serum TG, LDL-C content of laying hens was decreased by 31.79%（P〈0.05）, 51.96% （P〈0.01）, respectively; and xylooligosaccharide had the trend of decreasing TC, HDL-C, VLDL-C content in serum. The activity of live esterase, total esterase in serum was increased by 121.96%（P〈0.05）,71.26%, respectively. The results implied that the related enzyme activity of lipid metabolism was increased by xylooligosaccharide; while the lipid content eventually was decreased.