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

• Published in: Fisheries science Vol. 89; no. 5; pp. 659 - 670
• Main Authors: Yang, Darong, Wang, Zhenhua, Dai, Xixi, Liu, Minggang, Zhang, Dongmei, Zeng, Yan, Zeng, Dong, Ni, Xueqin, Pan, Kangcheng
• Format: Journal Article
• Language: English
• Published: Tokyo Springer Japan 01.09.2023; Springer Nature B.V
• Subjects: Aeromonas; Antioxidants; Aquaria; Aquarium fishes; Aquariums; Biomedical and Life Sciences; Brevibacillus laterosporus; Carassius auratus; Carp; Dietary supplements; Enzymatic activity; Enzyme activity; Enzymes; Fish; Fish & Wildlife Biology & Management; Food Science; Freshwater & Marine Ecology; Freshwater fishes; Growth; Individual rearing; Life Sciences; Original Article; Probiotics; Serum; Water quality; Crucian carp; Probiotics; Growth performance; Aquaculture
• ISSN: 0919-9268; 1444-2906
• DOI: 10.1007/s12562-023-01706-5

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 × 10 4  CFU/ml, and 5 × 10 5  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.