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6 海兰褐蛋鸡产蛋高峰至后期蛋壳化学组成的变化

Table 6 The changes of eggshell chemical components of Hy-Line Brown laying hens from peak to late phase of production

项目 Items 蛋鸡周龄 Hen age (wk) P 31 41 50 60 70 80 有机物百分含量Organic matter (%) 3.54±0.16 3.56±0.42 3.71±0.08 3.48±0.20 3.47±0.13 3.33±0.34 0.482 每枚鸡蛋蛋壳有机物含量 Organic matter per eggshell (mg) 209.33±12.62 226.19±30.90 235.47±7.65 217.06±11.57 214.26±24.24 204.06±21.34 0.266 单位蛋壳面积有机物含量 Organic matter per unit area (mg·cm-2) 2.88±0.17 3.09±0.42 3.19±0.08 2.92±0.16 2.88±0.32 2.72±0.28 0.163 总蛋白百分含量Total protein (%) 1.33±0.26 1.27±0.13 1.32±0.11 1.32±0.22 1.30±0.12 1.50±0.17 0.292 每枚鸡蛋蛋壳总蛋白含量 Total protein per eggshell (mg) 77.59±14.88 79.90±8.38 81.90±7.37 82.20±14.43 76.01±7.62 92.22±10.08 0.196 单位蛋壳面积总蛋白含量 Total protein per unit area (mg·cm-2) 1.07±0.20 1.09±0.11 1.11±0.10 1.11±0.19 1.02±0.11 1.23±0.14 0.301 Ca (%) 37.29a±0.73 34.11b±0.54 33.57b±1.52 35.02b±0.35 34.87b±1.11 34.85b±1.09 0.001 每枚鸡蛋蛋壳钙含量 Calcium content per eggshell (mg) 2176.08±78.59 2158.57±74.75 2108.28±88.13 2148.98±50.53 2069.85±52.24 2100.90±64.76 0.305 单位蛋壳面积钙含量 Calcium content per unit area (mg·cm-2) 29.93a±1.11 29.53ab±1.17 28.54ab±1.10 28.99ab±0.77 27.79b±0.69 27.76b±0.69 0.033 P (%) 0.13a±0.01 0.14a±0.01 0.13a±0.01 0.11b±0.01 0.10b±0.00 0.11b±0.01 < 0.001 每枚鸡蛋蛋壳磷含量 Phosphorus content per eggshell (mg) 7.66b±0.38 8.89a±0.55 8.18ab±0.73 6.75c±0.78 6.01c±0.22 6.46c±0.58 < 0.001 单位蛋壳面积磷含量 Phosphorus content per unit area (mg·cm-2) 0.11b±0.01 0.12a±0.00 0.11b±0.01 0.09c±0.01 0.08c±0.00 0.09c±0.01 < 0.001