Optimisation of Protein Nutrition in Laying Hens Via Determining the Limiting Amino Acid Order in Reduced Protein Diets and AM/PM Feeding

These datasets were collected during the experiment at UNE Laureldale Poultry Research Cage Facility (ARA21-096) to identify the order of limiting amino acids in a wheat-sorghum-based diet for laying hens. These data are sorted into the following groups: Chapter 3: Data on hen weight, laying performance and egg quality, nutrient digestibility, serum uric acid, tibia bone health, and caecal microbiota were collected. All these data belong to the Thesis Chapter 3: The Order of Limiting Amino Acids in a Wheat–Sorghum-Based Reduced-Protein Diet for Laying Hens. This chapter has been published in Applied Sciences (MDPI): https://doi.org/10.3390/ app132312934. Chapter 4: Data on hen and egg weight uniformity, laying performance and egg quality, and nutrient digestibility were collected. All these data belong to the Thesis Chapter 4: Effects of AM/PM Diets on Laying Performance, Egg Quality, and Nutrient Utilisation in Free-Range Laying Hens. This chapter has been published in Applied Sciences (MDPI): https://doi.org/10.3390/app14052163 Chapter 5: Data on home pen behavioural observation, individual hen ranging behaviour using RFID, welfare and external health parameters assessments including tonic immobility, novel object test, and stress hormones (feacal glucocorticoids metabolites), bone health, and welfare Indicators of free-range laying hens were collected. All these data belong to the Thesis Chapter 5: Effects of AM/PM Feeding on Behaviour, Range Use and Welfare Indicators of Free-Range Laying Hens. This chapter has been submitted in Animal Production Science for publication (under review).

本数据集采集自新英格兰大学（UNE）劳雷尔代尔家禽研究笼养设施（ARA21-096）开展的试验，旨在明确以小麦-高粱为基础的产蛋鸡日粮的限制性氨基酸顺序。数据集按以下组别分类整理：
第3章：采集了蛋鸡体重、产蛋性能、蛋品质、养分消化率、血清尿酸、胫骨健康状况及盲肠微生物群相关数据。所有数据均对应学位论文第3章《小麦-高粱型低蛋白日粮对产蛋鸡限制性氨基酸顺序的影响》，该章节已发表于MDPI旗下期刊《应用科学》（Applied Sciences）：https://doi.org/10.3390/app132312934。
第4章：采集了蛋鸡与鸡蛋体重均匀度、产蛋性能、蛋品质及养分消化率相关数据。所有数据均对应学位论文第4章《上午/下午饲喂模式对散养产蛋鸡产蛋性能、蛋品质及养分利用率的影响》，该章节已发表于MDPI旗下期刊《应用科学》（Applied Sciences）：https://doi.org/10.3390/app14052163。
第5章：采集了散养产蛋鸡的圈舍内行为观察数据、基于射频识别（RFID）的单只蛋鸡活动范围行为数据、福利与外部健康参数评估数据（包括强直静止试验、新奇物试探试验及应激激素——粪便糖皮质激素代谢物）、骨骼健康状况及福利指标相关数据。所有数据均对应学位论文第5章《上午/下午饲喂模式对散养产蛋鸡行为、活动范围利用及福利指标的影响》，该章节已投稿至《动物生产科学》（Animal Production Science）期刊，目前处于审稿阶段。