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Articles by Y. LIU
Total Records ( 1 ) for Y. LIU
  Z.-P. WEN , X.-Q. ZHOU , L. FENG , J. JIANG and Y. LIU
  A 9-week feeding trial was carried out with juvenile Jian carp to study the effect of dietary pantothenic acid (PA) on growth, body composition and intestinal enzyme activities. Semi-purified diets with seven levels (4.0, 15.5, 25.6, 36.1, 45.9, 56.1 and 65.9mg PAkg−1) of supplemental calcium d-pantothenate were fed to Jian carp (13.0±0.0g). PA improved specific growth rate (SGR), protein productive value (PPV), protein efficiency ratio (PER) and lipid production value (LPV) (P<0.05). Fish fed the control diet had significantly lower feed efficiency (FE) than that in any other group (P<0.05). Body protein content increased with increasing PA levels (P<0.05), but moisture, lipid and ash of fish carcasses were negatively related to the graded PA levels (P<0.05). Intestine protein content (IPC), hepatopancreas protein content (HPC) and activity of α-amylase, lipase, trypsin, Na+,K+-ATPase, alkaline phosphatase (AKP) and gamma-glutamyl transpeptidase (γ-GT) were all positively affected by the dietary PA levels (P<0.05), while intestine index (ISI) and hepatopancreas index (HSI) decreased with the increment of supplemental levels of PA (P<0.05). These results suggested that PA could enhance fish growth and intestinal enzyme activities. The dietary PA requirement of juvenile Jian carp, Cyprinus carpio var. Jian (13.0–73.0g), for optimal growth estimated by the broken-line analysis was 23.0 mgPAkg−1 diet.
 
 
 
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