【摘要】 试验旨在研究低磷日粮中添加复合酶制剂对蛋用种鸡产蛋、繁殖性能及消化率的影响。选用972只健康的24周龄罗曼褐父母代种鸡,分为3个处理,每个处理6个重复,每个重复54只种鸡。采用玉米-豆粕-杂粕型基础日粮,正对照组含总磷0.55%,非植酸磷0.40%,不加酶;负对照组含总磷0.40%,非植酸磷0.21%,不加酶;试验组含总磷0.40%,非植酸磷0.21%,加酶制剂。3种日粮其余营养指标相同,并满足罗曼褐父母代种鸡产蛋期营养需要。试验期18周。结果表明,在低非植酸磷的日粮中添加复合酶,不影响产蛋、繁殖性能和消化率(P>0.05)。添加200g/t复合酶替代罗曼褐蛋用种鸡日粮中75%的磷酸氢钙能够降低饲料成本,提高养殖企业的经济效益,对蛋用种鸡生产性能、繁殖性能和消化率无不利影响。更多还原

【Abstract】 This trial was conducted to study the effects of feed enzyme preparation on the production and breed performance and digestibility in laying breeder hens with enzyme Allzyme.Nine hundred and seventy-two 24-week-old Roman brown parent-breeding layers were randomly allocated to 3 treatments with 6 replicates and 54 birds each replicate.Three treatments were positive control groups,negative control groups and enzyme addition groups.The feed was based on maize and diverse meals,and the positive control diets contained 0.40% non-phytate phosphorus and no enzyme preparation,the negative control diets contained 0.21% non-phytate phosphorus and no enzyme preparation,and the enzyme addition diets were formulated by the addition of 200 g/t Allzyme to the negative control diets.The trial was continued for 18 weeks.The results showed that the production performance of laying breeder hens had no significant difference(P>0.05).Dietary treatments had no effects(P>0.05)on the production performance.The addition of 200 g Allzyme SSF per ton to replace 75% di-calcium phosphate in breeding layers diets can reduce feed costs and improve economic efficiency of laying breeder hens with no adverse effects on production and breeding performance.更多还原