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Dietary Methionine Requirements of Pacific White Shrimp Litopenaeus vannamei, of Three Different Sizes

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Title: Dietary Methionine Requirements of Pacific White Shrimp Litopenaeus vannamei, of Three Different Sizes
Authors: Lin, Heizhao
Chen, Yifang
Niu, Jin
Zhou, Chuanpeng
Huang, Zhong
show 2 moreDu, Qiang
Zhang, Jiarun

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Keywords: Litopenaeus vannamei
methionine requirement
growth performance
body composition
LC Subject Headings: Fish culture--Israel.
Fish culture.
Issue Date: 2015
Abstract: Three feeding trials were conducted to determine the dietary methionine requirements for Litopenaeus vannamei of three different sizes, small (0.55±0.01g), medium (4.18±0.05g), and large (9.77±0.08g). Seven diets were formulated with seven different levels of methionine (0, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, or 0.6%). The greatest weight gain (WG) and specific growth rate (SGR) of small and large shrimp were observed when dietary methionine levels were 0.8%, and 0.71%, respectively (P<0.05). The highest survival rate of small and large shrimp was observed when dietary methionine levels were 0.97%, and 1.07%, respectively (P<0.05). For small and medium shrimp, the optimal dietary methionine level for maximum weight gain estimated by quadratic regression analysis was 0.91% and 0.67% of dry diet, respectively. For large shrimp, the optimal dietary methionine requirement estimated by broken-line model based on weight gain was 0.66% of dry diet.
Pages/Duration: 10 pages
URI/DOI: http://hdl.handle.net/10524/49185
ISSN: 0792-156X
Appears in Collections:Volume 67, 2015



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