DSM Nutritional Products France, Research Centrer for Animal Nutrition & Health, 68128, Village-Neuf, France.
DSM Nutritional Products Ltd, BP 3255, CH-4303 Kaiseraugst, Switzerland.
Poult Sci. 2018 Jan 1;97(1):84-87. doi: 10.3382/ps/pex236.
A meta-analysis was conducted to evaluate the effect of the carotenoid canthaxanthin on production performance in layer hens. The data set contained 576 performance measurements from 34 trials. The trials were all conducted according to a similar experimental protocol from 1997 to 2012. The age of the animals ranged from 21 to 65 weeks. The experimental diets were predominantly wheat/SBM based, fed in mash form ad libitum. Depending on the trial and the treatment group considered, canthaxanthin supplementation was in the range of 0 to 8 mg/kg of feed.Using a linear mixed model regression applied to all 34 trials simultaneously, significant dose-dependent increases were found in egg yolk mass (+0.53% per ppm of canthaxanthin inclusion in the feed, P < 0.001), in egg mass (+0.47% per ppm, P = 0.0132), egg weight (+0.17% per ppm, P = 0.046), and in feed intake (+0.32% per ppm, P = 0.0054). A numerical increase was found in egg production (+0.28%, P = 0.14). The FCR decreased numerically (-0.24% per ppm, P = 0.36). The deposition of canthaxanthin in the egg yolk was 2.25 ppm per ppm of canthaxanthin in the feed (P < 0.001). It is concluded that in addition to egg yolk pigmentation, antioxidant effect, enhanced reproduction, and immune-modulation, canthaxanthin can significantly increase egg mass, thereby enhancing the productivity of the flock. Mechanisms relating to carotenoid metabolism and functions in avian species are a new research area that will require further investigation to explain the observed effects.
进行了一项荟萃分析，以评估类胡萝卜素角黄素对蛋鸡生产性能的影响。该数据集包含 34 项试验中的 576 项性能测量结果。这些试验均按照 1997 年至 2012 年相似的实验方案进行。动物的年龄范围从 21 周到 65 周不等。实验日粮主要以小麦/豆粕为基础，自由采食颗粒料。根据试验和考虑的处理组，角黄素的添加量在饲料中的范围为 0 至 8mg/kg。通过同时应用于所有 34 项试验的线性混合模型回归，发现蛋黄质量（每ppm 饲料中角黄素添加量增加 0.53%，P<0.001）、蛋重（每ppm 增加 0.47%，P=0.0132）、蛋重（每ppm 增加 0.17%，P=0.046）和采食量（每ppm 增加 0.32%，P=0.0054）呈显著的剂量依赖性增加。发现产蛋率呈数值性增加（增加 0.28%，P=0.14）。FCR 呈数值性下降（每ppm 下降 0.24%，P=0.36）。蛋黄中角黄素的沉积量为饲料中角黄素每 ppm 2.25ppm（P<0.001）。结论是，除了蛋黄着色、抗氧化作用、增强繁殖和免疫调节作用外，角黄素还可以显著增加蛋重，从而提高鸡群的生产力。与禽类物种中类胡萝卜素代谢和功能相关的机制是一个新的研究领域，需要进一步研究来解释观察到的效果。
