Publication Date:
2021-07-24
Description:
A 30-day research was conducted to evaluate the effects of different feeding rate (formulated diet) (2, 4, 6, 8 and 10% of wet body weight/day) and also fresh food (20% of wet body weight/day) on growth performance and feed utilization of Sparidentex hasta fry in nursery phase. Growth performance including final weight and specific growth rate (SGR) significantly increased with increasing feeding rate (p〈0.05). The relationship between SGR (% per day) and ration level (% per day) was an asymptotic curve described as SGR = 0.2809X+1.4191. Feed efficiency ratio (FER) decreased significantly with increasing ration levels, and the relationship between FER and ration level (% per day) described as FER =-0.0586X+1.3184. Hepatosomatic index significantly increased with increasing feeding rate (p〈0.05). Based on the above results, it may be concluded that a ration size of 8% of body weight per day is optimal for good growth and feed conversion efficiency of juvenile S. hasta in nursery phase.
Keywords:
Aquaculture
;
Iran
;
Feeding rate
;
Nursery phase
;
Growth indices
;
Sobaity seabream
;
Growth
;
Feed
;
Sparidentex hasta
Repository Name:
AquaDocs
Type:
article
,
TRUE
Format:
application/pdf
Format:
application/pdf
Format:
159-163
