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- W2384297611 abstract "The effect of dissolved oxygen(DO) at 4 concentrations((2.0±0.3) mg/L,T1;(4.2±0.3) mg/L,T2;(6.8±0.7) mg/L,T3 and(13.6±2.1) mg/L,T4) on the growth and digestive enzyme activity of Litopenaeus vannamei was determined at 25℃ in a culturing period of 30 days.A significant effect of DO on the growth and digestive enzyme activity was revealed.The survival rate was significantly higher(99.48%) under high DO concentration(T4) compared with low DO concentrations(T1 and T2).Soft carapaces of dead shrimp,and cannibalism were found at low concentrations of DO.The growth of the shrimp was depressed when DO was below 4.2 mg/L.The feed conversion efficiency and digestive enzyme activity went down with the decrease of DO.The feed conversion efficiency and the activities of protease and lipase at T4 were significantly higher than those at other DO concentrations,whereas amylase activity was not significantly different among DO concentration treatments.Our findings demonstrated that DO was an important factor affecting the amount and fitness of shrimp stock;hypoxia can cause a high mortality rate and growth depression and higher DO enhances the feed digestive activity and survival." @default.
- W2384297611 created "2016-06-24" @default.
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- W2384297611 date "2013-01-01" @default.
- W2384297611 modified "2023-09-25" @default.
- W2384297611 title "The Effect of Dissolve Oxygen Concentration on the Growth and Digestive Enzyme Activity of Whiteleg Shrimp Litopenaeus vannamei" @default.
- W2384297611 hasPublicationYear "2013" @default.
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