SUMMARY Algae represent a large and new source of nutrients with other health benefits as supplements in animal feed formulations. ‘Algae’ is a generic term that groups brown, green, and red types of both macro- and micro-algae. These marine plants may play a key role in the future for poultry production, as they constitute a new and valuable nutrient source, thanks to their nutritional composition and richness in as polyphenols, polysaccharides and fatty and amino acids. Many studies have evaluated the advantages and inconvenience of using micro- and macro-algae in poultry nutrition and their ability to improve animal health and, thus, welfare. This review describes the main nutritional characteristics of algae and the current knowledge on their effects in poultry production, impacts on animal health, growth performance and product quality (eggs and meat). The increase in laying rate and egg weight can reach +4.0 to 8.6 percentage points and +1.3 to 1.5 g, respectively. The increase in body weight of broilers and decrease in feed conversion ratio can vary from 5% to 22% and from 4% to 15%, respectively. According to the literature, a dietary incorporation rate of 2% for microalgae or a range between 1% and 5% for macroalgae is suitable for both laying hens and broiler chickens, even though these ranges greatly depend on the type of algae used and the expected benefits for poultry production.

中文翻译：

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在家禽生产中使用藻类：综述

总结 藻类是动物饲料配方中的补充剂，是具有其他健康益处的大量新营养素来源。“藻类”是一个通用术语，将大型和微型藻类的棕色、绿色和红色类型分组。这些海洋植物可能在未来的家禽生产中发挥关键作用，因为它们构成了一种新的、有价值的营养来源，这要归功于它们的营养成分和丰富的多酚、多糖、脂肪酸和氨基酸。许多研究评估了在家禽营养中使用微藻和大型藻类的优势和不便，以及它们改善动物健康和福利的能力。这篇综述描述了藻类的主要营养特性以及目前关于它们对家禽生产的影响、对动物健康的影响、生长性能和产品质量（鸡蛋和肉类）。产蛋率和蛋重的增加分别达到+4.0至8.6个百分点和+1.3至1.5克。肉鸡体重的增加和饲料转化率的降低可以分别从 5% 到 22% 和从 4% 到 15% 不等。根据文献，2% 的微藻日粮掺入率或 1% 至 5% 的巨藻对蛋鸡和肉鸡都适用，尽管这些范围在很大程度上取决于所用藻类的类型和预期家禽生产的好处。分别。根据文献，2% 的微藻日粮掺入率或 1% 至 5% 的巨藻对蛋鸡和肉鸡都适用，尽管这些范围在很大程度上取决于所用藻类的类型和预期家禽生产的好处。分别。根据文献，2% 的微藻日粮掺入率或 1% 至 5% 的巨藻对蛋鸡和肉鸡都适用，尽管这些范围在很大程度上取决于所用藻类的类型和预期家禽生产的好处。