Page 178 - 《水产学报》2025年第8期

羊玉梅，等 水产学报, 2025, 49(8): 089615

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Effects of different feed types on growth performance, body biochemical
composition and digestive enzyme activities in ivory shell (Babylonia areolata)

1,2
1
1
1,2
1,2*
YANG Yumei , SUN Yunchao , LIU Chunsheng , YANG Yi , YU Feng ,
1
WANG Aimin , GU Zhifeng 1,2
1. School of Marine Biology and Fisheies, Hainan University, Haikou 570228, China;
2. Sanya Institute of Breeding and Multiplication, Hainan University, Sanya 572025, China
Abstract: The ivory shell Babylonia areolata a gastropod of the class Gastropoda, the order Stenoglossa, family Buccinidae, is
distributed in tropical and subtropical sea areas of the Indo-Pacific Ocean. In China, the southeastern coastal provinces, such as
Hainan, Guangdong and Fujian are the main cultural areas of this species. Until now, trash fish is the main feed in ivory shell
culture, which often causes water pollution and pathogenic microbial infection. One way to solve this problem is to study new
suitable artificial compound feed for ivory shells. In this study, in order to obtain suitable feed for this species, the effects of
five types of feed, including chilled round scad meat (A, control group), steamed round scad meat (B), high temperature formed
soft feed (C), low temperature formed soft feed (D) and commercially available puffed pellet feed (E), on the growth perform-
ance, muscle nutritional composition and intestinal digestive enzyme activity of ivory shell juveniles [body weight (2.92±0.06)
g] were investigated over an 8-week feeding period. The survival rate was the highest in ivory shells fed with group C diet
97.14%±2.86%, and its weight specific growth rate was significantly higher than other feed groups (P<0.05), but less than the
control group (A) (P<0.05). The food conversion ratio of ivory shells fed with group C diet was 1.98±0.12, showed signific-
antly lower than those of A, B and D groups (P<0.05), but significantly higher than that of E group (P<0.05). In this study, the
essential amino acid (EAA) contents of ivory shell muscle ranged from 7.55-8.58 g/100 g. Significantly lower EAA levels were
found in group C and D treatments, compared to other groups (P<0.05). C22:6n-3 (docosahexaenoic acid, DHA), C20:4n-6
(arachidonic acid, ARA) and C18:0 were the top three fatty acids in ivory shell muscle. There was no significant difference in
these three fatty acid profiles among different treatments (P>0.05), except of significant lower C22:6n-3 content in group E
(P<0.05). The amylase and lipase activities in group C and D were significantly higher than those in control group (P<0.05),
while the opposite results were observed in pepsin activity, when compared to control and E groups. In summary, ivory shells
fed with high temperature formed soft feed (C) showed relatively higher survival rate and growth performance, and reasonable
fatty acid composition in muscle, which meant this type of artificial compound feed was suitable for ivory shell culture.

Key words: Babylonia areolata; soft feed; growth performance; biochemical composition; digestive enzyme
Corresponding author: LIU Chunsheng. E-mail: lcs5113@163.com
Funding projects: National Key Research and Development Program of China (2022YFD2401305); Key Research and Devel-
opment Project of Hainan Province (ZDYF2023XDNY032, ZDYF2022XDNY246, ZDYF2024YJGG004-20)

中国水产学会主办 sponsored by China Society of Fisheries https://www.china-fishery.cn
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