Effects of Size Grading on Growth and Non-Specific Immunity Factors of the Shrimp Litopenaeus vannamei Boone
文献类型: 外文期刊
作者: Li Yu-quan 1 ; Li Jian 1 ; Wang Qing-yin 1 ;
作者机构: 1.Chinese Acad Fisheries Sci, Yellow Sea Fisheries Res Inst, Minist Agr, Key Lab Sustainable Utilizat Marine Fisheries Res, Qingdao 266071, Peoples R China
2.Qingdao Agr Univ, Coll Anim Sci & Technol, Qingdao 266109, Peoples R China
关键词: Litopenaeus vannamei Boone;graded farming;growth;non-specific immunity factor
期刊名称:AGRICULTURAL SCIENCES IN CHINA ( 影响因子:0.82; 五年影响因子:0.997 )
ISSN: 1671-2927
年卷期: 2010 年 9 卷 3 期
页码:
收录情况: SCI
摘要: The study aims to determine the effects of graded farming on growth performance and non-specific immunity factors of shrimp Litopenaeus vannamei Boone. Three size groups of shrimp, i.e., the small size group [G(s), with an average body length (BL) of (3.04 +/- 0.36) cm and body weight (BW) (0.412 +/- 0.35) g], the large group [G(L), with a BL of (4.29 +/- 0.55) cm and BW of (1.098 +/- 0.42) g], and the ungraded group [G(m), with a BL of (3.47 +/- 0.81) cm and BW of (0.611 +/- 0.79) g], were reared under the same conditions for 8 wk. Growth performance and nonspecific immunity factors were measured. The results showed that BW gain, biomass gain and the specific growth rate of body length (SGR(L)) were significantly influenced by size grading (one-way ANOVA, P < 0.05). The peroxidase (POD) and antibacterial (Ua) activities of G(L) were lower than those of G(m). Superoxide dismutase (SOD) and lysozyme (Ul) activities of G(m) were lower than those of G(s). No significant difference (P = 0.121 > 0.05) was found on phenoloxidase (PO) activity among the three size groups. Synthetically, size grading could enhance growth and rearing efficiency, and did not have a significant influence on the immunity of L. vannamei Boone. Therefore, graded farming in L. vannamei Boone was feasible in the culture practice.
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