The present study evaluated the effects of chitosan nanoparticles (ChNP) as a feed additive during the 1-42 d of age on growth performance, blood serum parameters, carcass traits, intestinal bacteria, digestive enzymes, and fat digestibility. Two hundred and forty of 1-d-old Japanese quail were randomly distributed into four groups and fed a basal diet for 42 d. Groups 1, 2, 3, and 4 were fed 0.0 mg/kg diet (control group), 200-mg ordinary chitosan/kg diet, 50-mg ChNP/kg diet, and 200-mg ChNP/kg diet, respectively. The highest (P < 0.05) final weight and weight gain were recorded in group 4. The feed intake and mortality ratio were not affected significantly by ChNP supplementation. The best feed conversion ratio was recorded by groups 2 and 4. Blood serum parameters were within the normal range; however, serum total triglyceride and malondialdehyde were increased significantly in the control group. The highest values for total Lactobacillus and Enterococcus count in the intestine were observed in the ChNP and chitosan groups. The coliform count was significantly higher (P < 0.05) in the control group and group 3 than in the other groups. Carcass weights in groups 2 and 4 were significantly heavier (P < 0.05) than in the other groups. However, the abdominal fat weight was higher (P < 0.05) in the control group than in the other groups. The lipase activity was decreased significantly (P < 0.05) in groups 2 and 4 compared with the control group. These results concluded that the addition of ChNP had a positive effect on productive performance of Japanese quail.

本研究评估了在1-42 d龄的壳聚糖纳米颗粒（ChNP）作为饲料添加剂对生长性能，血清参数，cas体性状，肠道细菌，消化酶和脂肪消化率的影响。将240只1天大的日本鹌鹑随机分为4组，并以基础饮食喂养42天。第1、2、3和4组分别饲喂0.0 mg / kg饮食（对照组），200 mg普通壳聚糖/ kg饮食，50 mg ChNP / kg饮食和200 mg ChNP / kg饮食。最高（P <0.05）在第4组记录最终体重和体重增加。补充ChNP不会显着影响饲料的摄入量和死亡率。第2组和第4组记录了最佳的饲料转化率。血清参数在正常范围内。然而，对照组的血清总甘油三酯和丙二醛水平明显升高。在ChNP和壳聚糖组中，肠道中的乳酸菌和肠球菌总数最高。对照组和第3组大肠菌群计数显着高于其他组（P <0.05）。第2组和第4组的体重量明显较重（P<0.05）。然而，对照组的腹部脂肪重量高于其他组（P <0.05）。与对照组相比，第2组和第4组的脂肪酶活性显着降低（P <0.05）。这些结果表明，添加ChNP对日本鹌鹑的生产性能具有积极影响。