玉米型日粮与小麦型日粮饲喂蛋鸡效果比较试验

A Comparison of Egg Performance Characteristics of Laying Hens Fed Wheat-Based Diet and Corn- Based Diet

试验旨在研究用小麦完全代替日粮中的玉米后饲喂产蛋鸡的效果,以评估小麦用作蛋鸡能量饲 料的可行性。试验采用对比试验设计,选用尼克红蛋鸡180只,随机分为两个组,每组3个重复,每个重 复30只蛋鸡。一组为对照组．另一组为处理组,分别饲喂玉米--豆粕型日粮和小麦--豆粕型日粮。结果 表明,在蛋鸡日粮中用小麦完全代替玉米后,产蛋率降低1．9%,产蛋量降低1．06枚/只,异软蛋率提高 0．09％,采食量提高1．04(g/只·d),料蛋比提高0．09,均差异显著(p<0．05);破蛋率提高0．33％,平均蛋重降 低0．54％,但差异不显著(P>0．05)。从营养物质的消化率考虑,小麦型日粮表观能量的利用率和蛋白质的 表观消化率与玉米组相比均降低了,但均差异不显著(p>0．05)。从经济效益考虑,小麦型日粮的饲料成本 虽然降低了,但其他指标均不如玉米组,且产蛋成本增加了0．01元/kg。

The trial was conducted to evaluate the possibility whether wheat could completely replace corn in the diet of laying hens. 180 laying hens were divided 2 experimented treatments, randomly, with 3 replicates and each of 30 layers. The trial adopted contrast design, treatment 1 fed with typical corn-soybean-meal diet, the other treatment fed with wheat-based diet. The results showed that the egg performance fed wheatbased diet was lower than treatment fed corn-soybean-meal diet ： laying rate significantly decreased by 1.9% （p〈0.05）, the rate of unusual shape egg and soft-shelled egg sig.lificantly increased by 0.09% （p〈 0.05）, feed to egg ratio significantly increased by 0.09 （p 〈0.05）, feed intake significantly increased by 1.04% （p〈0.05）, broken egg rate increased （p〉0.05）, average egg weight decreased by 0.54% gram per egg （p 〉0.05） .energy utilization and protein apparent digestibility decreased without significant difference （p〉 0.05）. The feed cost in wheat-based diet reduced, but it was lower than treatment 1 in other indexes, and the egg cost of per kilogram increased by 0.01RMB.