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- Title
Effects of TiO NPs on Silkworm Growth and Feed Efficiency.
- Authors
Li, YangYang; Ni, Min; Li, FanChi; Zhang, Hua; Xu, KaiZun; Zhao, XiaoMing; Tian, JiangHai; Hu, JingSheng; Wang, BinBin; Shen, WeiDe; Li, Bing
- Abstract
Silkworm ( Bombyx mori) ( B. mori) is an economically important insect and a model species for Lepidoptera. It has been reported that feeding of low concentrations of titanium dioxide nanoparticles (TiO NPs) can improve feed efficiency and increase cocoon mass, cocoon shell mass, and the ratio of cocoon shell. However, high concentrations of TiO NPs are toxic. In this study, we fed B. mori with different concentrations of TiO NPs (5, 10, 20, 40, 80, and 160 mg/L) and investigated B. mori growth, feed efficiency, and cocoon quality. We found that low concentrations of TiO NPs (5 and 10 mg/L) were more effective for weight gains, with significant weight gain being obtained at 72 h ( P < 0.05). TiO NPs at 20 mg/L or higher had certain inhibitory effects, with significant inhibition to B. mori growth being observed at 48 h. The feed efficiency was significantly improved at low concentrations of 5 and 10 mg/L for 14.6 and 13.1 %, respectively ( P < 0.05). All B. mori fed with TiO NPs showed increased cocoon mass and cocoon shell mass; at 5 and 10 mg/L TiO NPs, cocoon mass was significantly increased by 8.29 and 9.39 %, respectively ( P < 0.05). We also found that low concentrations (5 and 10 mg/L) of TiO NPs promoted B. mori growth and development, improved feed efficiency, and increased cocoon production, while high concentrations (20 mg/L or higher) of TiO NPs showed inhibitory effect to the B. mori. Consecutive feeding of high concentrations of TiO NPs led to some degrees of adaptability. This study provides a reference for the research on TiO NPs toxicity and the basis for the development of TiO NPs as a feed additive for B. mori.
- Subjects
SILKWORMS; LEPIDOPTERA; TITANIUM dioxide; ANIMAL feeds; COCOONS
- Publication
Biological Trace Element Research, 2016, Vol 169, Issue 2, p382
- ISSN
0163-4984
- Publication type
Article
- DOI
10.1007/s12011-015-0413-5