【目的】探索日粮不同粗蛋白质水平对乳鸽生长性能、屠宰性能、肉品质和种鸽产蛋性能的影响。【方法】选用健康、体质量和产蛋性能相近的180对种鸽，随机分为5个处理组，每个处理组6个重复，每个重复6对种鸽。5个处理组种鸽分别饲喂含粗蛋白质质量分数为15%、16%、17%、18%和19%的日粮，试验期包括种鸽产蛋期、孵化期、乳鸽哺育期和种鸽再产蛋期，共计1个生产周期。【结果】与其他处理组相比，饲喂18%粗蛋白质日粮组在乳鸽1～14日龄和 1～21日龄平均日增质量均为最大，比15%粗蛋白质日粮组分别增加7.3% (P<0.05)和3.2%（P>0.05）。试验期间，各处理组间种鸽的采食量和料质量比均未见显著差异（P>0.05）。与15%粗蛋白质日粮组相比，18%粗蛋白质日粮组乳鸽的全净膛率和胸肌率分别显著增加2.7%和6.4% (P<0.05)；胸肌滴水损失和剪切力显著降低10.5%和11.4%（P<0.05）。与其他各组相比，18%和19%粗蛋白质日粮组种鸽的产蛋间隔可缩短1 d(P>0.05)；在种鸽哺育期间和乳鸽上市后1周内，18%粗蛋白质日粮组产蛋种鸽的比例最高(P<0.05)。【结论】综合各指标和二次曲线回归分析结果，18%粗蛋白质日粮组乳鸽的生长性能、屠宰性能、肉品质和种鸽的产蛋性均较好，建议孵化和哺育期种鸽日粮适宜的粗蛋白质质量分数为18%。
【Objective】The goal was to investigate the effects of dietary crude protein levels on growth performance, carcass performance, and meat quality of squabs and laying performance of breeding pigeons. 【Method】A total of 180 pairs of healthy breeding pigeons with similar body weight and reproduction performance were randomly divided into five groups. Each group had six replicates, and each replicate had six pairs of breeding pigeons. Five groups were fed with diets of 15%, 16%, 17%, 18% and 19% crude protein respectively. The whole feeding experiment lasted for one reproduction cycle including the egg-laying, egg hatching, feeding and egg-laying again periods. 【Result】Compared with other groups, the squabs in the group fed with 18% crude protein had the highest average daily gain during 1-14 days and 1-21 days. Average daily gain of squabs in the 18% crude protein group was 7.3% (P<0.05) and 3.2% (P>0.05) higher compared with the 15% crude protein group during 1-14 days and 1-28 days respectively. The average feed intake and feed/gain ratio of breeding pigeons were not significantly different among groups. Compared with the 15% crude protein group, the eviscerated carcass rate and the percentage of breast muscle of squabs in the 18% crude protein group were increased by 2.7% and 6.4% (P<0.05), respectively, and the drip loss and shear force of squab breast muscle in the 18% crude protein group were decreased by 10.5% and 11.4% (P<0.05), respectively. Compared with other groups, laying intervals of the 18% and 19% crude protein groups were decreased by one day (P>0.05). During the feeding period of the breeding pigeons and within one week after the squabs went on the market, the 18% crude protein group had the highest percentage of laying breeding pigeons (P<0.05). 【Conclusion】 Based on the comparisons and the quadratic regression analysis, the 18% crude protein group have good growth performance, carcass characteristics, meat quality of squabs and laying performance of breeding pigeons. The appropriate crude protein level for breeding pigeons during hatching and feeding period is 18%.