使用不同的硒源和维生素E水平作为一种策略，以支持在炎热气候下饲养的肉鸡的生产性能。
The use of different selenium sources and vitamin e levels as a strategy to support the performance of broilers raised in a hot climate.
作者信息
Lima Matheus Ramalho, Costa Fernando Guilherme Perazzo, de Melo Lucas Nunes, Kaneko Isabelle Naemi, de Brito Anna Neusa Eduarda Ferreira, de Lima Adiel Vieira, de Lima Amanda Fabrício Dantas, Jacob David, Santos Rafael, Fagundes Naiara Simarro, Cardoso Denise
机构信息
Animal Sciences Department, Federal University of the Semi-Arid Region | UFERSA, Mossoro, Rio Grande do Norte, Brazil.
Animal Sciences Department, Federal University of Paraiba, Areia, Paraiba, Brazil.
出版信息
Poult Sci. 2025 Jun 5;104(9):105350. doi: 10.1016/j.psj.2025.105350.
Broilers raised in tropical environments face significant oxidative stress due to heat, which can impair performance. Vitamin E and selenium (Se) are key nutrients supporting antioxidant defenses and are commonly supplemented in feed. This study evaluated the effects of two selenium sources-sodium selenite (SS) and hydroxy‑selenomethionine (OH-SeMet)-combined with standard or reduced vitamin E levels on broiler performance. A total of 800 male broilers were assigned to a 2 × 2 factorial design. Results demonstrated that OH-SeMet improved growth and feed efficiency compared to SS, regardless of vitamin E level, while reduced vitamin E impaired early growth but not overall performance. The combination of OH-SeMet with standard vitamin E provided the best feed conversion ratio at 44 days. These findings highlight the benefits of using OH-SeMet with adequate vitamin E supplementation to enhance broiler resilience to heat stress, offering a practical strategy for improving production efficiency in tropical commercial operations.
在热带环境中饲养的肉鸡由于高温面临显著的氧化应激，这会影响其生长性能。维生素E和硒（Se）是支持抗氧化防御的关键营养素，通常在饲料中添加。本研究评估了两种硒源——亚硒酸钠（SS）和羟基硒代蛋氨酸（OH-SeMet）——与标准或降低的维生素E水平相结合对肉鸡生长性能的影响。总共800只雄性肉鸡被分配到2×2析因设计中。结果表明，无论维生素E水平如何，与SS相比，OH-SeMet都能改善生长和饲料效率，而降低维生素E水平会损害早期生长，但不会影响整体性能。在44日龄时，OH-SeMet与标准维生素E的组合提供了最佳的饲料转化率。这些发现突出了使用OH-SeMet并适当补充维生素E以增强肉鸡对热应激的恢复力的益处，为提高热带商业养殖中的生产效率提供了一种实用策略。
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