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Effects of dietary supplementation with freeze‐dried powder of Ampithoe sp. on the growth performance, energy metabolism, and ammonia‐nitrogen tolerance of the Pacific white shrimp, Litopenaeus vannamei
Author(s) -
Shan Hongwei,
Dong Yu,
Ma Shen,
Zhou Yangen,
Ma Zhengyu
Publication year - 2018
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/are.13721
Subject(s) - litopenaeus , shrimp , biology , phosphofructokinase , lactate dehydrogenase , glycolysis , pyruvate kinase , ammonia , zoology , food science , biochemistry , metabolism , medicine , ecology , enzyme
This study evaluated the influence of dietary supplementation with freeze‐dried powder of Ampithoe sp. ( FDPA ) on the growth, energy metabolism, and resistance to ammonia‐nitrogen stress in Litopenaeus vannamei . There were four treatment groups: a 0% group (no FDPA addition), a 33% group, a 66% group (33% and 66% of the shrimp diet, respectively, replaced with FDPA ), and a 100% group (only FDPA ). The results of this study suggested a positive effect of FDPA supplementation on shrimp survival: the supplemented groups had significantly higher survival than the 0% group ( p < 0.05). The body length, body weight, and specific growth rate ( SGR ) of the 33% group were higher than those of the other groups and were significantly higher than that of the 100% group ( p < 0.05). FDPA feeding had a negative effect on carbohydrate metabolism pathways and energy consumption due to decreases in pyruvate kinase ( PK ), phosphofructokinase ( PFK ), succinate dehydrogenase ( SDH ), lactic dehydrogenase ( LDH ), and respiratory electron transport system ( ETS ) activity in shrimp fed FDPA during the culture period. The shrimp in the 33% group exhibited good resistance to ammonia‐nitrogen stress. Additionally, the glycolysis pathway and energy consumption of shrimp in the 33% group were enhanced during the ammonia‐nitrogen stress period. Consequently, it was inferred that FDPA supplementation could improve the resistance of shrimp to ammonia‐nitrogen stress (in the 33% group), which might be related to the effects of the supplement on energy metabolism pathways, particularly in terms of enhancing glycolysis to provide sufficient energy for the stress response.