Department of Animal Breeding, Institute of Animal Sciences, Warsaw University of Life Sciences, Ciszewskiego 8, 02-786, Warsaw, Poland.
Department of Animal Nutrition, The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, Instytucka 3, 05‑110, Jabłonna, Poland.
Sci Rep. 2022 Aug 15;12(1):13817. doi: 10.1038/s41598-022-18101-2.
Selenium is an essential element that is important for many metabolic processes. Feed components used in chicken nutrition, especially cereals, may be deficient in selenium, hence selenium supplementation is necessary. Taking into account the progress in breeding, and thus the higher demand of birds for this element, it seems obvious to investigate an increased selenium dose in the diet of chickens. The aim of the study was to evaluate the effect of feed enriched with different forms of selenium at an increased dose of 0.5 mg/kg feed on the profile and metabolism of fatty acids in the breast muscle and liver of chickens. The study was conducted on 300 Ross 308 chickens reared for 42 days under standard conditions. The control group received feed supplemented with sodium selenite at a dose of 0.3 mg/kg feed. The research groups received different forms of selenium (sodium selenate, selenised yeast, nano-selenium) at an increased dose of 0.5 mg/kg feed. The study showed that the administration of different forms of selenium in the feed affected its concentration in the breast muscle and liver (p ≤ 0.01). Nano-selenium was found to have a high bioavailability, but also a lower risk of toxicity compared to other forms of selenium. Using different forms of selenium (p ≤ 0.01) at a dose of 0.5 mg/kg feed can significantly modify the fatty acid profile, lipid and enzymatic indices of fatty acid metabolism in breast muscle and liver.
硒是一种必需元素，对许多代谢过程都很重要。鸡营养中的饲料成分，特别是谷物，可能缺乏硒，因此需要补充硒。考虑到饲养方面的进展，以及鸟类对这种元素的需求更高，在鸡饲料中增加硒的剂量似乎是合理的。本研究的目的是评估在增加的 0.5mg/kg 饲料剂量下，饲料中添加不同形式的硒对肉鸡胸肌和肝脏脂肪酸组成和代谢的影响。本研究在标准条件下饲养了 300 只罗斯 308 鸡 42 天。对照组接受补充亚硒酸钠（剂量为 0.3mg/kg 饲料）的饲料。研究组接受不同形式的硒（硒酸钠、酵母硒、纳米硒），剂量为 0.5mg/kg 饲料。研究表明，在饲料中添加不同形式的硒会影响其在胸肌和肝脏中的浓度（p≤0.01）。纳米硒具有较高的生物利用度，但与其他形式的硒相比，毒性风险较低。在 0.5mg/kg 饲料剂量下使用不同形式的硒（p≤0.01）可以显著改变胸肌和肝脏中的脂肪酸组成、脂质和脂肪酸代谢的酶指标。
