在鱼男性化过程中,在零交换水的生物分流系统中没有检测到激素残留物,即使在更高的料输入中也是如此
Dara Cristina Pires1, Érika Ramos de Alvarenga1, Franklin Fernando Batista da Costa2
1Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil.
Animal reproduction
|March 11, 2026
概括
在生物技术 (BFT) 中尼罗河的男性化最佳种群密度为1.5幼虫/升,确保高男性化率和生长,同时尽量降低成本和环境影响.
科学领域:
- 水产养殖是水产养殖的一种方式.
- 鱼类生物学 鱼类生物学
- 环境科学 环境科学
背景情况:
- 尼罗河鱼的男性化对于水产养殖生产至关重要.
- 生物分流技术 (BFT) 提供了一种零水交换的可持续方法.
- 养殖密度对BFT男性化的影响需要研究.
研究的目的:
- 在BFT中确定尼罗河鱼男性化最佳种群密度.
- 评估对生长,激素排放和成本的影响.
- 评估减轻环境影响的战略.
主要方法:
- 在BFT系统中测试了五种种群密度 (1.5-7.5幼虫/L).
- 服用17α-甲基 (MT) 28天,随后进行无激素养.
- 监测水质,生长表现,男性化率和成本.
主要成果:
- 较低的种群密度 (1.5幼虫/L) 产生了更好的生长和料摄入量.
- 各种密度的男性化率始终很高 (98.87%).
- 总变量成本随着库存密度的增加而增加.
- 在养后12小时内,在BFT水中没有检测到任何激素残留物.
结论:
- 1.5幼虫/L是尼罗河鱼在零交换BFT中男性化的最佳种群密度.
- 这种密度平衡了增长,成本效益和最小的环境影响.
- BFT是一种可行的方法,可以在有效的激素管理下进行密集的鱼生产.
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