番鸭产蛋期日粮蛋白质水平

在相同饲养管理条件下，饲喂相同料量，测定３种相同代谢能（１１．０７７ＭＪｋｇ－１）不同蛋白质水平（１９．５％、１８．０％、１６．５％）的日粮对种番鸭第一产蛋期产蛋性能的影响．结果表明，饲喂不同蛋白质水平日粮的３组种鸭，其产蛋率分别为４５．１０％、４８．４％和５１．２％；高峰期平均蛋重分别为７８．７、８１．０和７９．８ｇ；经方差分析，３组的产蛋率、蛋重及蛋品质差异均不显著（Ｐ＞０．０５），可见日粮粗蛋白质水平为１６．５％，可满足种番鸭的产蛋需要，其相应的蛋能比为１４．９μｇＪ－１

A Study on the Dietary Protein Level for Muscovy Ducks During the Laying Period

A trial was conducted to evaluate the effect of 3 diets with the same metabolic energy (11.077 MJ·kg -1 ) and different crude protein levels (19.5%,18.0%,16.5%, respectively) on the egg laying performance of Muscovy ducks reared in the same conditions and feeding amounts during the first laying period. The results showed as follows: The egg production rates of three groups were 45.1%, 48.4%,52.4% respectively; the average egg weights during the peak period were 78.7 g,81.2 g and 79.8 g respectively. The results of ANOVA indicated that there were no significant differences among the three groups in the egg production rate. egg weight or egg quality ( P >0.05). It was suggested that the dietary crude protein level of 16.5% could meet the laying need of Muscovy ducks, with cp∶ME rate: 14.9 μg·J -1 .