Effects of supply ratio of chicken manure extract and yeast solution on reproductivity and culture conditions of euryhaline rotifers (Brachionus plicatilis). (29th September 2022)

• Record Type: Journal Article
• Authors: Zhu, Tian; Xu, Xiang; Xu, Shichen; Liang, Ye; Ding, Yifan; Han, Cui; Yang, Jiaxin
• Is Part Of: Aquaculture research. Volume 53:Number 18(2022)
• Page Start: 6584
• Page End: 6594
• Publication Date: 2022-09-29
• Subjects: Brachionus plicatilis -- chicken manure extract -- fatty acids -- population growth -- suspending yeast solution -- unionized ammonia and total phosphorus; Aquaculture -- Periodicals; Fishery management -- Periodicals; 639.8
• DOI: 10.1111/are.16127
• Languages: English
• ISSNs: 1355-557X

Abstract

Abstract: To establish the optimal ratios of chicken manure extract (CME) and suspending yeast solution (SYS) for rearing rotifers, the population density, population growth rate, fatty acid compositions of rotifers and the unionized ammonia (NH3 ‐N) and total phosphorus (TP) concentrations in cultured water under different ratios of CME and SYS (BG, EG1, EG2, EG3, EG4 and EG5) were investigated. The results showed that the population density and population growth rate of rotifers in EG2 (4 ml·L −1 CME: 0.3 ml·L −1 SYS) were the highest and reached 387.33 ± 12.34 and 0.57 ± 0.01 ind.·ml −1, respectively. In addition, Pearson's correlation analysis indicated that the proportions of polyunsaturated fatty acids (PUFAs), n‐3PUFAs, n‐6PUFAs and long‐chain PUFAs in rotifers were positively correlated with the content of CME ( p < 0.05). Furthermore, NH3 ‐N and TP in the cultured water decreased with the SYS contents increasing. Compared with EG5, the concentrations of NH3 ‐N and TP in EG2 were reduced by 58.83 ± 0.05% and 72.52 ± 0.17%, respectively. These results indicated that both the population growth and fatty acid composition of rotifers, and the concentrations of NH3 ‐N and TP in the cultured water were significantly affected by the ratios of CME and SYS. And EG2 was optimal for rearing the rotifer.