National Engineering Laboratory for Animal Breeding and MOA Key Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
National Engineering Laboratory for Animal Breeding and MOA Key Laboratory of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
Poult Sci. 2022 Aug;101(8):101942. doi: 10.1016/j.psj.2022.101942. Epub 2022 May 1.
Eggshell color is the most intuitive external feature that affects consumer acceptance. Different eggshell colors are mainly determined by protoporphyrin IX and biliverdin content. The selection of eggshell color by the human eye with an eggshell color fan can be roughly classified. Although more technologically advanced, a colorimeter or spectrophotometer might be of limited use when observing a variety of shell colors, such as brown, olive, green, and blue. This study aimed to provide a convenient and accurate method for predicting the content of eggshell pigments by measuring eggshell color using the Commission International de L'Eclairage (CIE) Lab* system. The results showed the deepening of eggshell color in brown and blue eggs was correlated with increased eggshell pigment deposition, and eggshell color was significantly positively correlated with eggshell pigment content (P < 0.01). Furthermore, the adjusted R of the fitted function was in the range of 0.81 to 0.89, and the Spearman rank correlation coefficient between the predicted and true values was in the range of 0.89 to 0.93. In brief, the Lab* method of measuring eggshell color to predict the amount of eggshell pigment deposition is convenient, effective, and promising for layer production.
蛋壳颜色是影响消费者接受度的最直观的外部特征。不同的蛋壳颜色主要由原卟啉 IX 和胆绿素的含量决定。用蛋壳颜色扇形图可以大致对人类肉眼选择的蛋壳颜色进行分类。虽然更先进的技术，如比色计或分光光度计，在观察各种蛋壳颜色（如棕色、橄榄色、绿色和蓝色）时可能会受到限制。本研究旨在通过使用国际照明委员会（CIE）Lab系统测量蛋壳颜色，提供一种方便、准确的蛋壳色素含量预测方法。结果表明，棕色和蓝色蛋蛋壳颜色的加深与蛋壳色素沉积的增加有关，蛋壳颜色与蛋壳色素含量呈显著正相关（P<0.01）。此外，拟合函数的调整 R 值在 0.81 到 0.89 之间，预测值与真实值之间的斯皮尔曼等级相关系数在 0.89 到 0.93 之间。总之，用 Lab法测量蛋壳颜色来预测蛋壳色素沉积量，在蛋鸡生产中是方便、有效和有前景的。
