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

Enter multiple e-mails separated by comma.

imagem

Author(s): SILVA, G. F.; SHIOTSUKI, L.; DIAS, L. T.; TEIXEIRA, R. A.

Summary: 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.

Publication year: 2023

Types of publication: Journal article

Unit: Embrapa Fisheries and Aquaculture

Keywords: Colossoma Macropomum, Crescimento, Fish, Genetic correlation, Genética Animal, Heritability, Peixe, Seleção Genética, Tambaqui

Further information Download publication (PDF)

Observation

Some of Embrapa's publications are published as ePub files. To read them, use or download one of the following free software options to your computer or mobile device. Android: Google Play Books; IOS: iBooks; Windows and Linux: Calibre.

 

Access other publications

Access the Agricultural Research Database (BDPA) to consult Embrapa's full library collection and records.
Visit Embrapa Bookstore to purchase books and other publications sold by Embrapa.