海兰褐蛋鸡产蛋高峰至后期蛋壳品质的变化特征

马玲玲,冯嘉,王晶,齐广海,马友彪,武书庚,张海军,邱凯

The Changes of Eggshell Quality in the Laying Cycle of Hy-Line Brown Layers

MA LingLing,FENG Jia,WANG Jing,QI GuangHai,MA YouBiao,WU ShuGeng,ZHANG HaiJun,QIU Kai

表1 海兰褐蛋鸡产蛋高峰至后期鸡蛋表观指标的变化

Table 1 The changes of egg physical properties of Hy-Line Brown layers from peak to late phase of production

项目 Items 蛋鸡周龄 Hen age (wk) P 31 36 41 46 50 55 60 65 70 75 80 蛋重 Egg weight (g) 61.01f±0.62 61.18ef±0.41 61.80de±0.89 62.19d±0.84 62.91c±0.72 63.13c±0.62 63.23bc±0.38 63.46abc±0.73 63.53abc±0.77 63.92ab±0.93 64.18a±0.35 < 0.001 短径 Width (cm) 4.37ab±0.02 4.34abc±0.02 4.36ab±0.05 4.34bc±0.02 4.37ab±0.04 4.37a±0.02 4.35abc±0.03 4.36abc±0.02 4.35abc±0.03 4.33c±0.02 4.37ab±0.02 0.004 长径 Length (cm) 5.65f±0.04 5.63f±0.06 5.71e±0.04 5.74de±0.06 5.77cd±0.05 5.79bcd±0.04 5.78cd±0.04 5.81bcd±0.05 5.80bc±0.05 5.84b±0.04 5.91a±0.05 < 0.001 蛋形指数 Egg shape index 1.29e±0.01 1.30de±0.01 1.31cd±0.02 1.32b±0.02 1.32bc±0.01 1.32bc±0.01 1.33b±0.01 1.33b±0.01 1.33b±0.02 1.35a±0.01 1.37a±0.01 < 0.001 蛋壳面积 Eggshell surface area (cm2) 72.53f±0.54 72.66ef±0.32 73.12de±0.71 73.46d±0.54 74.02c±0.53 74.20c±0.53 74.28bc±0.30 74.46abc±0.57 74.51abc±0.61 74.82ab±0.79 75.02a±0.28 < 0.001