Estimation of genetic parameters for weight and length gains in tambaqui (Colossoma macropomum).

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.

Bibliographic Details

Main Authors:	SILVA, G. F., SHIOTSUKI, L., DIAS, L. T., TEIXEIRA, R. A.
Other Authors:	G. F. SILVA, UNIVERSIDADE FEDERAL DO PARANÁ; LUCIANA SHIOTSUKI, CNPASA; L. T. DIAS, UNIVERSIDADE FEDERAL DO PARANÁ; R. A. TEIXEIRA, UNIVERSIDADE FEDERAL DO PARANÁ.
Format:	Artigo de periódico biblioteca
Language:	Ingles English
Published:	2024-01-17
Subjects:	Genética Animal, Peixe, Tambaqui, Colossoma Macropomum, Crescimento, Seleção Genética, Genetic correlation, Heritability, Fish,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/1160900 https://doi.org/ 10.1590/1519-6984.277423
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