Related Experiment Video
Updated: Jan 29, 2026

Gene-environment Interaction Models to Unmask Susceptibility Mechanisms in Parkinson's Disease
Published on: January 7, 2014
Genotype-environment interaction for age at first calving in buffaloes, using the reaction norm model
Gabriela Rodrigues Freitas1, Naudin Alejandro Hurtado-Lugo2, Daniel Jordan de Abreu Dos Santos3,4
1Instituto Federal Goiano, Rio Verde, Brazil.
Abstract:
The objective of this study was to evaluate the genotype-environment interaction effect on age at first calving in buffaloes. The records were analysed using two approaches: (a) standard animal model and (b) reaction norm model. For the reaction norm analysis, two environmental gradients were formed, using age of first calving or milk yield group contemporary average. The results showed differences in the heritability estimates when using the two approaches. The reaction norm model indicated high heritability in more favourable environments and low magnitude genetic correlations between extreme environments. Based on our findings, we verified the significance of the genotype-environment interaction effect on age at first calving in buffaloes.
More Related Videos
15:30A Telemetric, Gravimetric Platform for Real-Time Physiological Phenotyping of Plant–Environment Interactions
Published on: August 5, 2020
12:21A Mouse Model for the Transition of Streptococcus pneumoniae from Colonizer to Pathogen upon Viral Co-Infection Recapitulates Age-Exacerbated Illness
Published on: September 28, 2022
Related Concept Videos
Gene-Environment Interactions
Aging
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
Reaction Mechanisms
For instance, the decomposition of ozone appears to follow a mechanism with two steps:
The Effect of Aging on Tissues
Synthesis and Decomposition Reactions
Determining Order of Reaction