饲料中蛋白·钙·磷水平对生长期固始白鹅日增重的影响

[目的]研究饲粮蛋白质、钙、磷添加水平对生长期固始白鹅日增重的影响。[方法]将270只生长期固始白鹅随机分成9组,每组10只,各设3个重复,其饲粮采用蛋白水平为12.4%~14.5%、14.5%~15.5%、15.5%~17.4%,钙水平为0.7%、0.8%、0.9%,磷水平为0.30%~0.39%、0.40%~0.41%、0.50%~0.52%采用3因素3水平正交设计,比较每组日增重。[结果]结果表明:不同蛋白质水平对生长期固始白鹅日增重影响极显著(P<0.01),以15.2%(第4组)和15.5%(第5组)蛋白水平增重速度最快,料重比最低;高钙低磷(第5组)水平对日增重影响同样极显著(P<0.01),但不如蛋白水平影响大;中低钙水平对生长期固始白鹅日增重影响差异不显著(P>0.05)。[结论]生长期固始白鹅饲粮适宜的蛋白质添加水平为15.2%~15.5%。

Effects of Different Dietary Levels of Protein,Calcium (Ca) and Phosphorus (P) on the Daily Weight Gain of Gushi White Geese during Growth Period

[Objective] The research aimed to study the effects of dietary levels of protein,Ca and P on the daily weight gain of Gushi white geese during growth period.[Method] The 270 Gushi white geese during growth period were divided into 9 groups,and each had 10 pullets with 3 replicates.3×3 factorial arrangement was designed,consisting of 3 protein levels(12.4%-14.5%,14.5%-15.5%,15.5%-17.4%),3 Ca levels(0.7%,0.8%,0.9%)and 3 P levels(0.30%-0.39%,0.40%-0.41%,0.50%-0.52%).[Result] The results were as follow:The effects of different levels of protein on the daily weight gains was notable significant(P<0.01).The daily weight gain was higher and feed gain was lower when the dietary level of protein in 15.2%(group 4) and 15.5%(group 5).The effects of higher Ca level and lower P level(group 5)in the feeding stuff on the daily weight gain were notable significant(P<0.01).But the effects of the middle and low Ca level on the daily weight gain were not significant(P>0.05).[Conclusion] The Gushi white geese could grow well when the protein level was 15.2%-15.5%.