贝塔的生长和存活是通过现场生物分流技术 (BFT) 养的微生物聚合物
G R Stringhetta1, J A Povh1, S A Teixeira1
1Universidade Federal de Mato Grosso do Sul - UFMS, Faculdade de Medicina Veterinária e Zootecnia - FAMEZ, Campo Grande, MS, Brasil.
概括
补充贝塔 (Betta splendens) 饮食与现场生物流体 (BFT) 以及活食,改善了生长和维持了生存率. 独家的生物分流养导致这些装饰鱼的表现不佳.
科学领域:
- 水产养殖和装饰性鱼类养殖
- 水生动物营养水生动物营养
- 可持续水产养殖实践 可持续水产养殖实践
背景情况:
- 贝塔·斯普伦登斯 (Betta splendens) 是一种食肉的装饰鱼,传统上需要活食来获得最佳的营养.
- 在水产养殖中,对可持续和成本有效的料替代品的需求正在增长.
- 现场生物分流 (BFT) 技术为营养回收和料供应提供了潜在的解决方案.
研究的目的:
- 评估 ex-situ 生物补充剂对Betta splendens fingerlings生长和生存的影响.
- 为了比较不同的饮食策略,涉及养贝塔的活食和生物流.
- 为了确定biofloc作为贝塔部分或完整的料替代品的有效性.
主要方法:
- 375个Betta splendens指纹在16天内被分为五个治疗组.
- 治疗包括专用活食物 (Artemia nauplii),专用生物,以及不同水平的生物补充的活食物.
- 鱼每天被两次,并监测生长参数 (体重,长度) 和存活率.
主要成果:
- 与活食物一起补充 ex-situ biofloc (BFT),最终的体重与纯活食物相比较.
- 在鱼用生物 (LF100-BFT100) 补充的活食中,总长度显著改善.
- 所有补充组的生存率都很高 (98.4-100%),只有生物分支 (BFT100) 的表现不佳.
结论:
- 在不减少活食的情况下,以现场生物补充饮食是Betta splendens养殖的可行替代方案.
- 生物补充剂提高了生长性能,并保持了贝塔指纹的高生存率.
- 根据目前的发现,不建议对Betta splendens的种植完全依赖biofloc.
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