Data/hora: 16/06/2024 11:30:39

Provedor de dados: | Revista Brasileira de Zootecnia
País: | Brazil
Título: | Length-weight relationship and prediction equations of body composition for growing-finishing cage-farmed Nile tilapia
Autores: | Silva,Tarcila Souza de Castro; Santos,Lilian Dena dos; Silva,Lilian Carolina Rosa da; Michelato,Mariana; Furuya,Valéria Rossetto Barriviera; Furuya,Wilson Massamitu.
Data: | 2015-04-01
Ano: | 2015
Palavras-chave: | Amino acids; Aquaculture; Fish; Mathematical modeling.
Resumo: | The objective of the present study was to develop models for predicting live weight from the length-weight relationship and body composition of Nile tilapia. A total of 3,000 juvenile fish (initial weight = 28.6±4.16 g and standard length = 13.8±0.16 cm) were distributed into three circular cages (12 m3 each). The fish were hand-fed extruded diets containing 332 g kg-1 of crude protein and 3,230 kcal kg-1 of digestible energy, until apparent satiety, twice daily, for 100 days. Twelve fish were collected from each cage every 20 days for measurements of body weight and length, and proximate composition analysis; statistical analysis was conducted using linear regression. The value of the slope b and the intercept for the length-weight relationship were 3.0604 and 0.0203, respectively. The prediction equations obtained for body moisture (MO), crude protein (CP), crude lipid (CL), and ash against body weight (BW) in g/100 g of fish were as follows: MO = 70.0090 - 0.0071BW; CP = 13.7550 + 0.0037BW; CL = 9.2636 + 0.0057BW; and ash = 4.2392 - 0.0024BW. It is possible to develop equations to predict body weight and composition, which can be used to control the production of Nile tilapia and improve its commercial value.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982015000400133
Editor: | Sociedade Brasileira de Zootecnia
Relação: | 10.1590/S1806-92902015000400001
Formato: | text/html
Fonte: | Revista Brasileira de Zootecnia  v.44 n.4 2015
Fonte: | info:eu-repo/semantics/openAccess