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The Effect of feeding rate on the growth performance of green sturgeon (Acipenser medirostris) fry

Zheng, Keke and Deng, Dong Fang and De Riu, Nicola and Moniello, Giuseppe and Hung, Silas S. O. (2014) The Effect of feeding rate on the growth performance of green sturgeon (Acipenser medirostris) fry. Aquaculture nutrition , in press. ISSN 1353-5773. eISSN 1365-2095. Article.

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DOI: 10.1111/anu.12179

Abstract

Four one-week growth trials were conducted on green sturgeon fry to determine the effect of feeding rate on their growth performance at 18 °C when they were fed a salmonid soft moist feeds containing 445–457 g kg−1 of crude protein and 201–207 g kg−1 of lipid. The fry used in Trials I-IV were 5–8 weeks after their initiation of exogenous feeding. Their average initial body weights were 1.63 ± 0.01, 2.63 ± 0.03, 5.08 ± 0.08 and 7.49 ± 0.05 g, respectively. Six feeding rates used were as follows: 2.5–15.0% body weight per day (% BW day−1) with a 2.5% increment in Trial I; 1.25–7.50% BW day−1 with a 1.25% increment in Trial II; and 2.0–7.0% BW day−1 with a 1.0% increment in Trials III and IV. Four replicates with 50 fry per tank in Trials I-III and 30 fry per tank in Trial IV were assigned randomly to each feeding rates. The final body weight, specific growth rate, feed efficiency, protein retention, and whole-body moisture, lipid, and energy contents were significantly (P < 0.05) affected by the feeding rates. The optimum feeding rates determined by the broken-line model were 7.1, 5.7 and 5.3% BW day−1 for Trials I, II and IV, when the fry were 5, 6 and 8 weeks after their initiation of exogenous feeding, respectively.

Item Type:Article
ID Code:10290
Status:In Press
Refereed:Yes
Uncontrolled Keywords:Feeding rate, fry, green sturgeon, growth performance
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/18 Nutrizione e alimentazione animale
Divisions:001 Università di Sassari > 01-a Nuovi Dipartimenti dal 2012 > Medicina Veterinaria
Publisher:Blackwell / Wiley
ISSN:1353-5773
eISSN:1365-2095
Deposited On:11 Nov 2014 10:56

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