Effects of genotype and age on eggshell cuticle coverage and color profile in modern laying hen strains.
Effects of genotype and age on eggshell cuticle coverage and color profile in modern laying hen strains.
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DOI：
10.1016/j.psj.2021.101691
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发表时间：
2022-03
期刊：
影响因子：
4.4
通讯作者：
Berardinelli A
中科院分区：
文献类型：
--
作者：
Sirri F;Zampiga M;Berardinelli A
本研究旨在探讨基因型和日龄对蛋鸡蛋壳角质层沉积的影响。从目前全世界用于商业蛋生产的3个现代母鸡品系（A、B和C）中在不同年龄间隔（20-30、40-50和60-70周龄）获得总共4，320个褐色蛋。对于每个基因型/年龄间隔，对120个随机收集的鸡蛋进行四次采样。将蛋单独称重，并使用角质层蓝染色来评估角质层覆盖的质量和程度。在每个鸡蛋上，使用CIE L*a*B* 系统在染色之前和之后评估蛋壳颜色特征，并且这些值用于计算ΔE*ab。还应用4点量表视觉评分（VS）系统来估计染色后角质层覆盖的程度（0 =无覆盖，1 =部分覆盖，2 =完全覆盖-低程度，3 =完全覆盖-高程度）。采用因子方差分析（factorial ANOVA）分析基因型和年龄及其交互作用对蛋壳颜色的影响，采用综合卡方检验（omnibus Chi-Square）和卡方自动交互作用检测（Chi-squared Automatic Interaction Detector）算法对VS数据进行分析。总的来说，基因型和年龄影响蛋壳颜色配置文件以及角质层覆盖程度。与B相比，A系母鸡的角质层沉积较好，特别是C系母鸡，其ΔE*ab值显著较高。VS评价结果显示，随着鸡龄的增加，角质层覆盖度受损的鸡蛋数量增加（20-30、40-50和60-70周龄分别为23%、34%和37%，P < 0.05）。然而，基因型和年龄之间的显着的相互作用被观察到：从早期到晚期的母鸡年龄的过渡导致在每个基因型的ΔE*ab的变化的显着不同的模式。分类树分析表明，母鸡基因型对角质层沉积的影响大于年龄。总之，考虑到角质层在餐桌鸡蛋生产中的重要性，这些结果突出了基因型对蛋壳角质层覆盖的关键作用。
The aim of this research was to investigate the effects of laying hen genotype and age on eggshell cuticle deposition. A total of 4,320 brown eggs were obtained from 3 modern hen strains (A, B, and C), currently used worldwide for commercial egg production, at different intervals of age (20–30, 40–50, and 60–70 wk). Four samplings of 120 randomly collected eggs were carried out for each genotype/interval of age. Eggs were individually weighed and cuticle blue staining was used to assess quality and degree of cuticle coverage. On each egg, the eggshell color profile was assessed before and after staining using the CIE L*a*b* system and these values were used to calculate ΔE*ab. A 4-point scale visual score (VS) system was also applied to estimate the degree of cuticle coverage after staining (0 = no coverage, 1 = partial coverage, 2 = total coverage - low degree, 3 = total coverage - high degree). The effects of genotype and age and their interaction on eggshell color attributes were assessed by means of factorial ANOVA, while omnibus Chi-Square and Chi-squared Automatic Interaction Detector algorithm were applied for the analysis of VS data. Overall, both genotype and age affected the eggshell color profile as well as the degree of cuticle coverage. Hen strain A showed better cuticle deposition in comparison with B and particularly C one, being ΔE*ab values significantly higher. The VS evaluation revealed that eggs with impaired cuticle coverage degree increased with the hen age (23, 34, and 37%, respectively for 20–30, 40–50, and 60–70 wk; P < 0.05). However, a significant interaction between genotype and age was observed: transition from early to late hen age resulted in a significantly different pattern of ΔE*ab changes in each genotype. The classification tree analysis confirmed that the hen genotype has a greater effect than the age on cuticle deposition. In conclusion, considering the importance of the cuticle in table egg production, these results highlight the crucial role exerted by the genotype on eggshell cuticle coverage.
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影响因子：
4.4
作者：
Kulshreshtha, G.;Rodriguez-Navarro, A.;Hincke, M. T.
通讯作者：
Hincke, M. T.
影响因子：
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