饲粮中添加富马酸有机稀土对蛋鸡后期产蛋性能的影响

Effects of organic rare earth fumarate adding in diets for layers on egg laying performance in later laying period

选用46周龄的罗曼蛋鸡280只,随机分成4组。试验Ⅰ、Ⅱ组每千克基础饲粮中分别添加富马酸有机稀土铬合物400mg、600mg,试验Ⅲ组添加占饲粮0 5%的730(富马酸)有机稀土复合添加剂,对照组喂基础饲粮,试验期37d。结果表明:①试验组平均只鸡产蛋量(1 389kg),比对照组(1 302kg)增加了6 68%(0 087kg),差异极显著(P<0 01);②试验Ⅰ组只鸡平均产蛋量最高(1 441kg),较对照组提高了10 68%;③试验Ⅰ、Ⅱ、Ⅲ组料蛋比分别比对照组降低17 91%,6 76%和4 71%。

280 Lohmann laying hens aged 46 weeks were randomly divided into 4 groups of 70 hens each and a feeding trial was conducted with them for 37 daysOn the basis of that the hens in the control group were fed the basal diet only,hens in treatment group Ⅰ,Ⅱ were fed diets added organic rare earth complex fumarate 400 mg/kg,600 mg/kg resp,but the hens int treatment group Ⅲ fed diet with 995%of basal diet+05% 730(complex fumarate) organic rare earth additivesThe results showed that the average egg production per hen(1389kg) of the tree trentment groups was 668%(0087kg)higher(P<001) than that of the control group (1302kg)Among them the average egg production per hen(1441kg) of the treatment group Ⅰ was the highest which was 1068% higher than that of the control groupFeed-egg ratio of the treatment group Ⅰ,Ⅱ and Ⅲwas 1791%,676% and 471% lower than that of the control group