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Responses of hybrid sturgeon ( Huso dauricus ♀ × Acipenser schrenckii ♂ ) to oral administration of phosphorus
Author(s) -
Jin Jiali,
Chu Zhipeng,
Chen Xihua,
Liang Xufang
Publication year - 2020
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.14488
Subject(s) - sturgeon , biology , huso , excretion , medicine , zoology , endocrinology , phosphorus , alkaline phosphatase , urea , creatinine , fishery , biochemistry , chemistry , fish <actinopterygii> , organic chemistry , enzyme
To better understand the phosphorus (P) utilization in hybrid sturgeon ( Huso dauricus ♀ × Acipenser schrenckii ♂ ), a combined technique with oesophageal intubation, dorsal aorta cannulation and urinary catheterization was used in the present study. Groups of five hybrid sturgeon were orally administrated with graded doses of P (0, 50, 100 and 200 mg P/kg BW) in the form of monocalcium phosphate. The high dose of P (200 mg P/kg BW) caused a significant increase in plasma P concentration. Plasma calcium (Ca) concentrations were significantly increased in the fish treated with 0 and 100 mg P/kg BW. Both P and urea excretion showed increased changing pattern with increasing P intubation level and exhibited significant higher value in 200 mg P/kg BW group. A significant increase in Ca excretion was found in the group without P supplementation (0 mg P/kg BW). ALP and SOD activity in plasma was inhibited in fish at P‐deficient groups (0 and 50 mg P/kg BW). The data in the current study showed that hybrid sturgeon at 100 mg P/kg BW treatment exhibited better P and Ca utilizations with lower waste excretion, as well as favourable status of anti‐oxidation.