The effects of dietary lipid sources and lecithin on the production of giant freshwater prawn <Emphasis Type="Italic">Macrobrachium rosenbergii</Emphasis> larvae in the Mekong Delta region of Vietnam |
| |
| Authors: | Tran?Thi?Thanh Hien Tran?Ngoc?Hai Nguyen?Thanh?Phuong Hiroshi?Y?Ogata Email author" target="_blank">Marcy?N?WilderEmail author |
| |
| Institution: | (1) College of Aquaculture and Fisheries, Cantho University, Cantho City, Vietnam;(2) Japan International Research Center for Agricultural Sciences, 305-8686 Tsukuba, Ibaraki, Japan |
| |
| Abstract: | The giant freshwater prawn, Macrobrachium rosenbergii, is cultured widely in the Mekong Delta region of Vietnam but it is often difficult or expensive for hatchery operators to
purchase commercial diets used as a feeding supplement to Artemia nauplii. Therefore, in the present study, the effects of lipid sources and lecithin on the growth and survival rate of M. rosenbergii larvae were examined in order to develop suitable hand-prepared larval diets for seed production of M. rosenbergii in this area. Six egg custard diets consisting of various ratios of lipid (originating from soybean oil and squid oil) and
lecithin were used for rearing Macrobrachium rosenbergii larvae. Treatments in which larvae were fed diets containing squid oil exhibited the highest body length and survival rates
(7.14–7.43 mm and 51.1–68.1%, respectively), and differed significantly from other treatments (P<0.05). Use of dietary soybean oil yielded the lowest body length and survival rates (6.29–6.75 mm and 22.0–48.7%), respectively).
The supplementation of dietary lecithin did not increase final body weight but did improve larval survival rates. The n-3
HUFA content of prawns fed dietary squid oil was higher than those of animals provided with other diets. These results indicated
that the most appropriate diet for rearing M. rosenbergii larvae is the diet containing 3% squid oil and 1.5% lecithin. |
| |
| Keywords: | freshwater prawns larval nutrition lecithin lipid sources Macrobrachium rosenbergii |
| 本文献已被 SpringerLink 等数据库收录！ |
|
