PDF(Pubmed)
Abstract：
Currently, there is a dearth of in-depth analysis and research on the impact of canthaxanthin on the production performance, egg quality, physical characteristics, and offspring health of laying hens. Furthermore, the metabolic mechanism of cantharidin in the body remains unclear. Therefore, to solve the above issues in detail, our study was conducted with a control group (C group), a low-dose canthaxanthin group (L group), and a high-dose canthaxanthin group (H group), each fed for a period of 40 days. Production performance was monitored during the experiment, in which L and H groups showed a significant increase in ADFI. Eggs were collected for quality analysis, revealing no significant differences in qualities except for yolk color (YC). The YC of the C group almost did not change, ranging from 6.08 to 6.20; however, the trend in YC change in other groups showed an initial intense increase, followed by a decrease, and eventually reached dynamic equilibrium. By detecting the content of canthaxanthin in the yolk, the YC change trend was found to be correlated with canthaxanthin levels in the yolk. The content of unsaturated fatty acid increased slightly in L and H groups. Following the incubation period, the physical characteristics and blood biochemical indices of chicks were evaluated. It was observed that the shank color of chicks in the L and H groups was significantly higher than that in the C group at birth. However, by the 35th day, there were no significant differences in shank color among the three groups. Further investigation into the metabolic mechanism involving canthaxanthin revealed that the substance underwent incomplete metabolism upon entering the body, resulting in its accumulation as well as metabolic by-product accumulation in the yolk. In summary, this study highlighted the importance of understanding canthaxanthin\'s role in production performance, egg quality, and offspring health, providing valuable insights for breeders to optimize feeding strategies.
摘要：
目前,角黄素对生产性能的影响缺乏深入的分析和研究,鸡蛋质量,物理特性,和蛋鸡的后代健康。此外，斑驳素在体内的代谢机制尚不清楚。因此,为了详细解决上述问题，我们的研究与对照组（C组），低剂量角黄素组（L组），和高剂量角黄素组（H组），每次喂食40天。在实验过程中监测生产性能，其中L和H组ADFI显著增加。收集鸡蛋进行质量分析，除蛋黄颜色（YC）外，品质没有显着差异。C组的YC几乎没有变化，范围从6.08到6.20；然而，其他组的YC变化趋势显示出最初的强烈增加，随后是下降，最终达到动态平衡。通过检测蛋黄中角黄素的含量，发现YC的变化趋势与蛋黄中的角黄素水平相关。L和H组不饱和脂肪酸含量略有增长。潜伏期之后,对雏鸡的生理特征和血液生化指标进行了评价。观察到L和H组雏鸡的小腿颜色在出生时明显高于C组。然而,到了第35天,三组间小腿颜色无显著差异。对涉及角黄素的代谢机制的进一步研究表明，该物质进入体内后代谢不完全，导致其积累以及蛋黄中的代谢副产物积累。总之,这项研究强调了了解角黄素在生产性能中的作用的重要性，鸡蛋质量,和后代的健康，为育种者提供有价值的见解，以优化饲养策略。
