Data/hora: 20/05/2024 09:13:29

Biblioteca(s): 	Epagri-Sede.	
Data corrente: 	05/09/2014	
Data da última atualização: 	05/09/2014	
Autoria: 	JATOBA, A.; SILVA, B. C.; SILVA, J. S.; VIEIRA, F. N.; MOURIÑO, J. L. P.; SEIFFERT, W. Q.	
Título: 	Protein levels for Litopenaeus vannamei in semi-intensive and biofloc systems.	
Ano de publicação: 	2014	
Fonte/Imprenta: 	Aquaculture, Amsterdam, v. 432, p. 365-371, 2014.	
Idioma: 	Português	
Conteúdo: 	The aims of this research were to evaluate the zootechnical performance and dietary cost for the marine shrimp (Litopenaeus vannamei) cultured in a superintensive biofloc system and a conventional semi-intensive system using diets containing different protein levels. Four different diets, with crude protein (CP) contents of 24.3, 30.3, 32.9 and 36.7% were produced. In the laboratory, experimental culture in the biofloc system was performed in twelve experimental units at a density of 250 shrimp m&#8722; 3, the four treatments were performed in triplicate. The semi-intensive culture system was applied at the commercial farm in eleven ponds containing 15.5 shrimp m&#8722; 2. After 49 days, the zootechnical performance of the shrimp was rated, and the cost per kilogram of shrimp was produced by both culture systems. In the semi-intensive system, the shrimp fed with a diet containing 32.9% CP showed a higher final weight and weight gain and a lower dietary cost. In the biofloc culture, a higher final weight, weight gain, growth rate and productivity were observed in shrimp fed diets containing 30.3, 32.9 and 36.7% CP compared with those fed a diet containing 24.3% CP. The lowest dietary cost of shrimp farming in the biofloc system was registered in the shrimp fed the 30.3% CP diet, whereas, in the semi-intensive system, the highest final weight, highest weight gain and lowest cost were observed in shrimp fed the 32.9% CP diet.	
Palavras-Chave: 	Farming systems; Nutrition; Pacific white shrimp; Production cost; Protein.	
Categoria do assunto: 	L Ciência Animal e Produtos de Origem Animal	
URL: 	http://intranetdoc.epagri.sc.gov.br/producao_tecnico_cientifica/DOC_34741.pdf	
Registro original: 	Epagri-Sede (Epagri-Sede)	
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