These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: A breeding program for Nile tilapia in Brazil: Results from nine generations of selection to increase the growth rate in cages.
    Author: Yoshida GM, de Oliveira CAL, Campos EC, Todesco H, Araújo FCT, Karin HM, Zardin AMSO, Bezerra Júnior JS, Filho LA, Vargas L, Ribeiro RP.
    Journal: J Anim Breed Genet; 2022 Mar; 139(2):127-135. PubMed ID: 34553431.
    Abstract:
    Variance components and heritabilities for daily weight gain (DWG) were estimated for Nile tilapia farmed in cages across nine generations (G1-G9) of selection in a breeding program in Brazil. DWG was measured in 16,272 accumulated tagged animals representing 535 full- and half-sib families of Nile tilapia under cage farming. The additive genetic variance showed a slight variation (0.051-0.066), and heritability estimates ranged from 0.20 to 0.33. The common environmental effect accounted for a higher proportion of the total variance in DWG, especially in the last generations (6%-24%). A genetic trend based on all data available showed a substantial increase in the DWG (about 3.3% per generation) of Nile tilapia across nine generations of selection. Furthermore, our results demonstrate ample scope for further genetic improvement.
    [Abstract] [Full Text] [Related] [New Search]