Title:	Estimation of genetic parameters for weight and length gains in tambaqui (Colossoma macropomum).
Authors:	SILVA, G. F. SHIOTSUKI, L. DIAS, L. T. TEIXEIRA, R. A.
Affiliation:	G. F. SILVA, UNIVERSIDADE FEDERAL DO PARANÁ; LUCIANA SHIOTSUKI, CNPASA; L. T. DIAS, UNIVERSIDADE FEDERAL DO PARANÁ; R. A. TEIXEIRA, UNIVERSIDADE FEDERAL DO PARANÁ.
Date Issued:	2023
Citation:	Brazilian Journal of Biology, v. 83, e277423, 2023.
Description:	The goal of this study was to determine the genetic parameters for growth traits in tambaqui (Colossoma macropomum) fish of similar age and weight. The data set included monthly measurements of body weight and length from120 fish for a year (1,440 measurements). The study found that weight gain had a heritability estimate of 0.01, while length gain had a heritability estimate of 0.27. There was a high positive correlation (0.84) between weight and length gains. The genetic variance and heritability of body weight decreased with age. This study suggests that breeding programs should select for body weight and weight gain to promote genetic gain in tambaqui. Selecting younger animals can also help reduce costs while still achieving genetic gains.
Thesagro:	Genética Animal Peixe Tambaqui Colossoma Macropomum Crescimento Seleção Genética
NAL Thesaurus:	Genetic correlation Heritability Fish
ISSN:	1678-4375
DOI:	https://doi.org/ 10.1590/1519-6984.277423
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CNPASA)