Egg production weights trial

Dataset containing the results of trial conducted in an effort to determine the effects of long-term inclusion of the trace minerals: zinc, copper, and manganese in the feed on the egg production, egg shell quality, and internal egg quality of Lohmann lite laying hens. This trial compared minerals sourced from chelated hydroxy-analogues of methionine, with conventional sulphide and oxide salt sources of the same minerals. The production parameters that were measured during the trial included egg production, total feed intake, feed conversion ratio, and hen mortality. Egg shell quality was quantified by recording the total amount of eggs rejected per category, egg shell weight, egg weight, and the egg shell breaking strength. Internal egg quality was quantified by measuring the albumin height (Haugh unit), and the mineral concentration in the egg yolk of Zn, Cu and Mn. A total of 1080 Lohmann Brown Lite laying hens were allocated to six treatments. The trial was run for 60 weeks, was initiated at 16 weeks-of-age, and was terminated at 76 weeks-of-age. Each treatment was repeated eighteen times, and a complete randomised block design was used.本数据集收录了一项饲喂试验的相关结果，该试验旨在探究日粮中长期添加微量矿物质（锌、铜、锰）对罗曼褐轻型蛋鸡（Lohmann Brown Lite laying hens）的产蛋性能、蛋壳品质及蛋内品质的影响。本试验对比了两种不同来源的上述微量矿物质：一种为蛋氨酸螯合羟基类似物源矿物质，另一种为常规硫化物与氧化物盐类矿物质源。试验期间测定的生产性能参数包括产蛋率、总采食量、饲料转化率及母鸡死亡率。蛋壳品质通过以下指标量化：记录各等级不合格蛋的总数量、蛋壳重量、蛋重及蛋壳抗破强度。蛋内品质通过以下指标量化：测定蛋清高度（哈氏单位，Haugh unit）以及蛋黄中锌、铜、锰的矿物质浓度。试验共选取1080只罗曼褐轻型蛋鸡，随机分为6个处理组，试验周期为60周，于鸡只16周龄时启动，至76周龄时结束。每个处理组设置18次重复，试验采用完全随机区组设计。