Ảnh hưởng của số lần cho ăn lên tăng trưởng và tỷ lệ sống của ấu trùng cua biển (Scylla paramamosain)

Lê Quốc Việt, Trần Ngọc Hải
2019 Can Tho University Journal of Science  
Study on the effect of different feeding frequencies in nursing mud crab was done in order to determine the appropriate feeding frequency for the best growth performance and survival rate of mud crab larvae. The experiment was randomly set up with three treatments such as (i) feeding 4 times a day; (ii) 6 times a day and (iii) 8 times a day. Each treatment was triplicated. Experimental tanks volume was 120 L (100 L of culture volume), stocking density was 450 individuals/L and s water salinity
more » ... as 30‰. After 12 days of rearing at larvae zoae 4 stage, larvae were transfered to the 500L tank (culture volume of 300L). The survival rate ranged from 42.9 -51.0%, but there was no statistically significant difference among treatments (p>0.05). After 26 days of rearing, the metamorphic rate of crab1 were 100% andlarvae stage index of larvae in all treatments were not significant difference (p>0.05). Besides, the survival rate of crab1 in the treatments range from 2.6 -3.0% and there were no significant difference (p>0.05).
doi:10.22144/ctu.jvn.2019.142 fatcat:j32bsdelorgkbns3fzmpsnjavi