【作者】 李跃胜；

【导师】 魏时来；

【作者基本信息】 甘肃农业大学 ， 动物营养与饲料科学， 2009， 硕士

【摘要】 试验采用两因子试验设计,代谢能(A因子)2个水平,粗蛋白质(B因子)3个水平,即分为6个处理组,每个组4个重复,每个重复20只鹌鹑,分为育雏期(0～18日龄)和育成期(18～39日龄)。通过测定生长性能、产蛋性能、蛋品质、养分利用等指标,探讨蛋鹌鹑育雏育成期饲粮能量和蛋白质的适宜水平。试验结果表明:A因子(代谢能)对鹌鹑18日龄的体重、0～18日龄的增重及日增重均无显著影响(P>0.05),但低能量组鹌鹑的各指标均呈现出高于高能量组的趋势;B因子(粗蛋白质)对鹌鹑18日龄的体重、0～18日龄的增重及日增重均有显著影响(P<0.05),各指标均随饲料中粗蛋白质水平的提高而升高。A因子(代谢能)对鹌鹑的18～39日龄增重及日增重均显著影响(P<0.05),高能量组鹌鹑的两指标均显著高于低能量组;B因子(粗蛋白质)对鹌鹑39日龄的体重、18～39日龄的增重及日增重均有显著影响(P<0.05),中等和高等蛋白水平组鹌鹑的39日龄体重均显著地高于低蛋白水平组;而低蛋白水平组鹌鹑的18～39日龄增重及日增重两指标均显著地高于其他两组(P<0.05)。A、B两因子对产蛋率、平均产蛋量有显著的交互作用(P<0.05),产蛋率是低能低蛋白的第1组最高,高能高蛋白的第6组次之,高能低蛋白的第4组最低;平均产蛋量是高能高蛋白的第6组最高,低能低蛋白的第1组次之,低能高蛋白的第3组最低。11周龄蛋品质测定:高能量组的蛋壳重、蛋壳相对重、蛋壳强度均极显著地高于低能量组(P<0.05);B因子(粗蛋白质)对各项指标均无明显影响(P>0.5)。二因子对蛋形指数有显著的交互作用(P<0.05),低能中蛋白水平的第2组最大。26周龄蛋品质测定:高能量组的蛋重显著高于低能量组(P<0.05);B因子(粗蛋白质)对各项指标均无明显影响(P>0.05)。低能量组鹌鹑的总能代谢率显著地高于高能量组,而高能量组的钙的存留率、总磷存留率显著地高于低能量组(P<0.05)。B因子(粗蛋白质)对总能的代谢率有显著的影响(P<0.05),低蛋白水平组显著地高于其他两组;中等蛋白水平组鹌鹑的总磷存留率最小,与高蛋白水平组间差异显著(P<0.05)。更多还原

【Abstract】 This experiment was carried out to determine appropriate energy and protein levels in brood and finishing stage diet for laying quail.We used two-factor test experimental design, two energy (A factor) levels and three protein (B factor) levels which were divided into six groups,each with four replications having 20 quails. In the trial period, recorded the growth performance and production performance, deteminationed the eggs quality and nutrient retention.The results showed that, factor A (ME) on the 18-day-old weight,weight gain and daily gain of quails were not significantly affected in brood stage (P>0.05),but quails of low-energy group were shown the trend that various indicators was higher than the high - energy group; factor B (CP) were significantly affected on various indicators (P <0.05), all indicators increased with the level of crude protein in feed higher.Factor A (ME) on the weight gain and daily gain of quails were significantly affected in finishing time(P <0.05),the two indicators of quails in high-energy group were significantly higher than the low-energy group; There was a significant effect of factor B (CP) on the 39-day-old weight, weight gain and daily gain in finishing stage(P <0.05), the 39-day-old body weight of quails in middle-and higher protein levels groups were significantly higher than the low protein level group; and the quail,s weight gain and ADG of low-protein group were significantly higher than the other two groups (P <0.05).There was significant interaction on laying rate and average egg production by A, B two factors (P <0.05).Laying rate of group 1 with low-energy and low-protein was the highest, followed by group 6 with high-energy and high-protein levels, group 4 with high-energy and low - protein was the lowest; average egg production of cluster 6 with high-energy and high-protein was the highest, followed by low-energy low-protein group 1, group 3 with low-energy and high-protein was the lowest.11 week age egg quality determination: The high energy group’s shell weight, relative eggshell weight and eggshell strength were obviously higher than the low energy group (P<0.05); factor B (CP) not obviously affected to each target (P>0.5). Two factors had interaction on the egg-shaped index (P<0.05). 26 week age egg quality determination: The high energy group’s egg heavy obviously were higher than the low energy group (P<0.05); The factor B (CP) not obviously affects to each target (P>0.05).The quail’s metabolic rate of GE in Low-energy group were significantly higher than the high-energy group, and the retention rate of calcium and total phosphorus of the high-energy group were significantly higher than the low - energy group (P <0.05). The factor B (CP) had remarkable influence on metabolic rate of GE (P<0.05), the low protein group obviously were higher than other two groups; Total phosphorus preserving rate of Medium protein group is smallest, with high protein during horizontal group difference remarkable (P<0.05).更多还原