肉用仔鹅饲粮适宜粗纤维和粗蛋白水平的研究

Investigation on proper dietary crude fiber and crude protein levels in meat geese

采用3X3因子的析因设计，将189只1日龄健康肉用仔鹅随机分成9组，每组3个重复，每个重复7只；将日粮的粗纤维和粗蛋白分前、后期各设低、中、高3个水平，构成9个处理，18种日粮，研究不同粗纤维和粗蛋白水平对1～35日龄（前期）、36—63日龄（后期）肉仔鹅生长性能和营养物质利用率的影响。结果：1～35日龄肉仔鹅对日粮中粗纤维水平非常敏感，但对蛋白质水平要求不高；低纤维水平日粮组日增重与料重比明显好于中、高纤维组（P〈0．01），日粮粗纤维和粗蛋白水平极显著影响鹅对能量和蛋白质的利用率（P〈0．01）；1～35日龄肉仔鹅饲粮粗纤维水平以3．5％、粗蛋白水平以17％～19％为宜。36～63日龄，较低的粗蛋白水平即可满足鹅的需要；高纤维水平日粮组鹅的日增重与料重比明显好于低纤维水平组（P〈0．01）；日粮粗纤维和粗蛋白水平极显著影响鹅对能量和蛋白质的利用率（P〈0．01）。试验表明36～63日龄肉仔鹅饲粮适宜粗纤维水平为10％，粗蛋白水平为14％。

A 3×3 factorial experiment was designed to investigate the effect of diets with different CF and CP levels on the growth performance and availability of nutrients in meat geese aged from 1 to 63 days. One hundred eighty-nine meat geese of 1 day-old were randomly divided into 9 groups, each containing 3 replicates and 7 geese per replicate. The experiment was divided into two period （ 1 ～ 35 day and 36 ～ 63 day periods）. In each period, geese were fed with 9 diets respectively with different CF and CP levels. During the 1 ～ 35 day period of experiment, the daily gain of low dietary CF levels groups were great significantly higher than that of others （P〈0.01） and had the lowest F/ G. Dietary CP levels had no significant effect on daily gain and F/G （P〉0. 05 ）. Dietary CF and CP great significantly influenced the availability of energy and protein of young geese （P〈0. 01 ）. During the 36 -63 day period, the daily gain and the F/G of high dietary CF levels groups were great significantly better than that of low dietary CF levels groups （P〈0. 01 ） ; the daily gain of 14% and 16% CP levels groups were significantly higher than that of 18% CP level groups （P〈0. 05）, and 14% CP level groups had the best F/G; dietary CF and CP great significantly influenced the availability of energy and protein of young geese （ P〈0. 01 ）. Therefore, the levels of 3.5% CF and 17% - 19% CP and the 10% CF and 14% CP in diets were proper for meat geese aged from 0 to 35 days and 36 to 63 days, respectively.