[Home ] [Archive]    
:: Main :: About :: Current Issue :: Archive :: Search :: Submit ::
:: Volume 20, Issue 2 (2021) ::
IJFS 2021, 20 Back to browse issues page
Research Article: Study on formulated diet for large yellow croaker (Larimichthys crocea) larvae at the early feeding stage
R. Chen, Y. Hong, Y. Hong, K. Sun, Y. Hong *
Guangdong Yuequn Ocean Biological Reaearch Development Company Limited , 13902767688@139.com
Abstract:   (259 Views)
Most hatcheries in China rely on live prey for successful rearing of fish and shrimp larvae. Besides the high costs, live prey with pathogenic bacteria also increases the risk of contracting foodborne diseases. More than 3.5 billion large yellow croaker (Larimichthys crocea) larvae (total length over 4-centimeters) were raised in 2016. However, no formulated diet is available for replacing live feed in early stages of this croaker so far. In the present study, a new microdiet (Yq) is investigated for rearing croaker larvae at early stages (15 days after hatching). A commercial import diet (Cd) and live prey (Lp) were fed as controls. About 20,000 larvae per tank were hatched from Ningde Fufa Fishery Company in May 4th, 2017. Quality parameters, such as growth performance, survival and three digestive enzyme activities were measured. The survival rate of Yq (58.5%), Cd (51.5%) and Lp (69.6%) exhibited no significant difference (p>0.05). Furthermore, the cost of Yq was only about 23.3% of the cost of Lp. Specific growth rate in Lp was about 8 times higher (p<0.05) than that in two other microdiet treatments. Tryptic activity was slightly higher than other enzymes’ activities, revealing that trypsin plays an important role in the degradation process of large yellow croaker larvae. In the Lp group, tryptic activity was 4 times higher than that of the other two groups. In addition, the activity of three diets on α-amylase and lipase activities were not significantly different (p>0.05). The high survival rate and low cost of Yq showed that it is suitable in rearing Larimichthys crocea larvae at the early stages.
Keywords: Larvae, Large yellow croaker, Formulated diet, Survival, Digestive enzyme
Full-Text [PDF 540 kb]   (104 Downloads)    
Type of Study: Orginal research papers | Subject: aquaculture
Received: 2018/06/14 | Accepted: 2018/09/18 | Published: 2021/03/20
Send email to the article author

Add your comments about this article
Your username or Email:


XML     Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Chen R, Hong Y, Hong Y, Sun K, Hong Y. Research Article: Study on formulated diet for large yellow croaker (Larimichthys crocea) larvae at the early feeding stage. IJFS. 2021; 20 (2) :313-323
URL: http://jifro.ir/article-1-3473-en.html

Volume 20, Issue 2 (2021) Back to browse issues page
Iranian Journal of Fisheries Sciences Iranian Journal of Fisheries Sciences
Persian site map - English site map - Created in 0.04 seconds with 30 queries by YEKTAWEB 4299