Effects of dietary administration of Macsumsuk®on growth and stress to low salinity and low dissolved oxygen in whiteleg shrimp,Litopenaeus vannamei(Boone, 1931) juveniles

An 8‐week study was conducted to explore the results of Macsumsuk® as a feed additive on the stress tolerance and growth of Litopenaeus vannamei in 15 culture tanks of 36 L each. Three hundred shrimp averaging 0.1 ± 0.01 g were fed with five isonitrogenous (48.38 ± 0.38% CP) diets (in triplicate groups) containing kaolinite (Macsumsuk®) at 0%, 0.3%, 0.6%, 1.2% and 2.4%, namely Mk₀, Mk₀.₃, Mk₀.₆, Mk₁.₂ and Mk₂.₄. Specific growth rate (SGR) and weight gain (WG) of shrimp fed diets Mk₁.₂ and Mk₂.₄ were significantly better than those of shrimp fed diet Mk₀ (p