低蛋白日粮对朗德鹅生产性能及健康状况的影响

Effect of low protein diet on production performance and health status of Lande geese

试验旨在研究低蛋白日粮对朗德鹅生长性能和健康状况的影响,为低蛋白日粮在朗德鹅生产中的应用提供参考。选择480只18日龄朗德鹅,随机分为4组,分别为14.6%组、14.8%组、15.0%组和18.0%组,每组6个重复,每个重复20只,其中14.6%组、14.8%组和15.0%组为低蛋白组,18.0%组为对照组。结果表明:低蛋白组的平均末重、平均日采食量和料重比与对照组差异均不显著(P>0.05),低蛋白组的平均日增重均低于对照组,且14.6%组与对照组差异显著(P<0.05),14.8%组、15.0%组与对照组差异不显著(P>0.05),低蛋白组中14.6%组的平均日增重最低,为65.06 g,与14.8%组差异显著(P<0.05),与15.0%组差异不显著(P>0.05);低蛋白组死淘率、发病率均低于对照组,且与对照组差异显著(P<0.05)。说明低蛋白日粮虽然会降低朗德鹅的日增重,影响其生长性能,但也降低了朗德鹅患病风险,提高了其成活率。

The aim was to study the effects of low protein diet on growth performance and health status of Landes geese,and to provide reference for the application of low protein diet in Landes geese production.A total of 48018-day-old Landes geese were randomly divided into 4 groups with 6 replicates per group and 20 geese per replicate,including 14.6%group,14.8%group,15.0%group and 18.0%group.The results show that:There were no significant differences in average final weight,average daily feed intake and ratio of feed to gain between the low protein group and the control group(P>0.05).The average daily gain of low protein group was lower than that of control group,and there were significant differences between 14.6%group and control group(P<0.05),and no significant differences between 14.8%group,15.0%group and control group(P>0.05).In the low protein group,the average daily gain of 14.6%group was the lowest(65.06 g),which was significantly different from that of 14.8%group(P<0.05),but not significantly different from that of 15.0%group(P>0.05).The death rate and morbidity of low protein group were lower than those of control group,and the difference was significant(P<0.05).These results indicated that low protein diet could reduce the daily gain of Landes geese and affect the growth performance,but could reduce the risk of disease and improve the survival ratio.