粗酶制剂添加于大麦日粮中对鸡生长和血液生化值的影响

选择７日龄蛋用雏鸡和１日龄肉用仔鸡，研究大麦日粮中添加粗酶制剂对鸡生长和血液生化值的影响。结果表明：（１）添加粗酶制剂于大麦日粮可明显提高鸡的增重（Ｐ＜０．０５）和饲料转化率；（２）大麦日粮添加粗酶制剂可提高鸡血清总蛋白水平（Ｐ＜０．０５），同时可提高肉用仔鸡血清甘油三酯水平（Ｐ＜０．０１）；（３）大麦日粮，添加酶制剂使蛋用雏鸡尿酸水平明显提高（Ｐ＜０．０５），却使肉用仔鸡尿酸水平明显降低（Ｐ＜０．０５）。此结果提示，粗酶制剂可提高鸡对大麦日粮的营养吸收能力，促进鸡的生长，但蛋用雏鸡和肉用仔鸡对蛋白质或氨基酸的利用率不同。

EFFECTS OF CRUDE ENZYME PREPARATIONSUPPLEMENTED TO BARLEY BASED DIETS ON GROWTH AND SERUM BIOCHEMICAL VALUES OF CHICKEN

Seven-day-old layer chicks and one-day-old broiler chicks were used to evalute the effects of crude enzyme preparation supplemented to barley-based diets on growth and serum biochemical values of chicken.Compared with barley-based diet,enzymes treatment increased (1)body weight gains (P<0.05) and feed conversion rate of both chickens;(2)serum protein content(P<0.05) in both chickens and serum triglyceride(P<0.01) in broiler chicken were increhsed;(3)serum uric acid content (P<0.05) in layer chicks was raised significantly,whereas decreased serum uric acid content(P<0.05) in broiler.The results suggested that crude enzyme preparation can improve growth of chicken by increasing nutrients absorption can,but there was significant difference in protein or amino acid utilization between both chikens.