饲粮锌水平对鹅生长性能、血清生化指标及激素含量的影响  

Effects of Dietary Zinc Level on Growth Performance,Serum Biochemical Parameters and Hormone Contents of Geese

作　　者：陈苗璐[1] 王宝维[1] 张名爱[1] 岳斌[1] 葛文华[1] 王迪[1] 王姣[1] 孟苓凤[1] 

机构地区：[1]青岛农业大学优质水禽研究所,青岛266109

出　　处：《动物营养学报》2013年第5期1105-1112,共8页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：国家水禽产业技术体系专项基金(CARS-43-11)

摘　　要：本试验旨在研究饲粮锌水平对鹅生长性能、血清生化指标及激素含量的影响,以确定鹅饲粮中锌的适宜水平。试验分别选用1和29日龄肝用型青农灰鹅各360只,随机分为6个组,每组6个重复,每个重复10只鹅。各组饲粮锌水平:1～4周龄为31.28、81.28、131.28、181.28、231.28、281.28 mg/kg;5～15周龄为27.46、77.46、127.46、177.46、227.46、277.46 mg/kg。试验期15周。结果表明:1)根据曲线方程可得,1～4周龄,饲粮锌水平为112.51 mg/kg时平均日增重最大;饲粮锌水平为106.05 mg/kg时料重比最低。5～15周龄,饲粮锌水平为108.09 mg/kg时平均日增重最大;饲粮锌水平为101.69 mg/kg时料重比最低。2)饲粮锌水平为131.28 mg/kg时能显著提高4周龄血清总蛋白(TP)、锌含量及碱性磷酸酶(AKP)活性(P<0.05)。饲粮锌水平为127.46 mg/kg时能极显著提高15周龄血清AKP活性和锌含量(P<0.01)。3)根据曲线方程可得,饲粮锌水平为161.16 mg/kg时,鹅4周龄血清雌二醇含量最高;饲粮锌水平为167.92 mg/kg时,鹅血清生长激素含量最高。饲粮锌水平为132.41 mg/kg时,鹅15周龄血清生长激素含量最高。由此可见,锌对鹅的生长性能以及血清TP、锌、激素含量和AKP活性具有重要影响。建议鹅最佳生长性能饲粮锌适宜水平为:1～4周龄106.05 mg/kg,5～15周龄101.69 mg/kg。This experiment was conducted to study the effects of dietary zinc level on growth performance, ser- um biochemical parameters and hormone contents of geese, and to estimate the dietary zinc optimal level of geese. Three hundred and sixty 1-day-old and three hundred and sixty 29-day-old Qingnonghui geese were ran- domly selected and divided into 6 groups with 6 replicates per group and 10 geese per replicate. Dietary zinc levels in each group were 31.28, 81.28, 131.28, 181.28, 231.28 and 281.28 mg/kg at the age of 1 to 4 weeks and 27.46, 77.46, 127.46, 177.46, 227.46 and 277.46 mg/kg at the age of 5 to 15 weeks, respec- tively. The experiment lasted for 15 weeks. The results showed as follows： 1 ） according to the curve equa- tion, at the age of 1 to 4 weeks, when the dietary zinc level was 112.51 mg/kg, the average daily gain （ADG） reached the highest, when the dietary zinc level was 106.05 mg/kg, the feed to gain （F/G） reached lowest. At the age of 5 to 15 weeks, when the dietary zinc level was 108.09 mg/kg, the ADG reached the highest, when the dietary zinc level was 101.69 mg/kg, the F/G reached lowest. 2 ） At 4 weeks of age, diet- ary zinc level of 131.28 mg/kg significantly increased the serum total protein and zinc contents and serum al- kaline phosphatese （AKP） activity （ P 〈 0.05 ）. At 15 weeks of age, dietary zinc levels of 127.46 mg/kg significantly increased serum AKP activity and zinc content （ P 〈 0.01 ）. 3 ） According to the curve equation, at the age of 4 weeks , when the dietary level of zinc was 161.16 mg/kg, the serum estradiol （E2 ） content of geese reached the highest; when the dietary level of zinc was 167.92 mg/kg, the serum growth hormone con- tent of geese reached the highest. At the age of 15 weeks, when the dietary level of zinc was 132.41 mg/kg, the serum growth hormone content of geese reached the highest. In conclusion, zinc has important influence on the growth performance, serum total protein content, serum AKP activity and serum hormonal content

关 键 词：锌 鹅 生长性能 激素 适宜水平 

分 类 号：S835[农业科学—畜牧学]