1. Addition of Brevibacillus laterosporus to the rearing water enhances the water quality, growth performance, antioxidant capacity, and digestive enzyme activity of crucian carp Carassius auratus.
- Author
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Yang, Darong, Wang, Zhenhua, Dai, Xixi, Liu, Minggang, Zhang, Dongmei, Zeng, Yan, Zeng, Dong, Ni, Xueqin, and Pan, Kangcheng
- Subjects
CRUCIAN carp ,GOLDFISH ,DIGESTIVE enzymes ,WATER quality ,OXIDANT status - Abstract
The purpose of this study was to investigate the effects of adding Brevibacillus laterosporus (B. laterosporus) PBC01 to aquarium water on water quality, including Aeromonas spp. counts, growth performance, digestive enzyme activities, and antioxidant activity of the crucian carp Carassius auratus. One hundred and twenty healthy crucian carp (13.56 ± 0.2 g) were reared for 56 days in four different treatments with three replications, as the control group (clean water) and three test groups with PBC01 at levels 5 × 10
3 CFU/ml, 5 × 104 CFU/ml, and 5 × 105 CFU/ml added to the rearing water. As a result, B. laterosporus in rearing water can lower the concentrations of nitrogen and the number of Aeromonas spp. to varying degrees. As the B. laterosporus concentration increased, the effect became more significant. Crucian carp reared in water supplemented with B. laterosporus showed marked growth performance in comparison with the control group. In addition, rearing water supplemented with B. laterosporus improved antioxidant status in the serum and liver of crucian carp, and increased the intestinal digestive enzyme activity. In conclusion, certain amounts of B. laterosporus PBC01 used as a probiotic supplement in the aquarium water can promote crucian carp growth and improve the health status of these fish. [ABSTRACT FROM AUTHOR]- Published
- 2023
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