Heritabilities and genetic trends for reproductive traits in a population of Romosinuano cattle in Colombia
Journal Title: Revista MVZ Cordoba - Year 2016, Vol 21, Issue 1
Abstract
Objective. The aim of this study was to estimate heritabilities and genetic trends for reproductive traits in a beef cattle population Romosinuano. Material and methods. Age at first calving (AFC), first calving interval (FCI), and second calving interval (SCI) were evaluated from a database generated from 1951 to 2011 by Research Center Turipana. Unicaracter animal model was used, which included fixed of contemporary group (year-season), random direct genetic additives effects and residual. Estimates of variance components and genetic parameters were obtained through Restricted Maximum Likelihood procedure, using AIREMLF90 program. Genetic trends were calculated as a linear regression of weighted averages of breeding values over the years, using the REG procedure of Statistical Analysis System. Results. The indices of heritability for additive genetic effects were 0.04 ± 0.05 for AFC, 0.06 ± 0.06 for FCI, and 0.09 ± 0.06 for SCI. Conclusions. Low heritabilities indicating that should improve nutritional and management conditions in the herd, so that they can better express the traits evaluated. The estimated genetic trends were near zero, which shows that the objective of the CI Turipaná regarding this population has complied fully preserving the genetic variability of the breed Romosinuano.
Authors and Affiliations
Oscar Vergara G, Dr. Sc *| Universidad de Córdoba, Faculty of Veterinary and Zootechnical Medicine, Tropical Animal Production Research Group, Montería, Colombia.Correspondence: overgara@correo.unicordoba.edu.co, Gustavo Ossa S, Ph. D| Corporación Colombiana de Investigaciones Agropecuarias CORPOICA, National Program for Animal Genetics and Biotechnology, C.I. Turipaná, Cereté, Colombia., Julieth Cabrera A, MVZ| Universidad de Córdoba, Faculty of Veterinary and Zootechnical Medicine, Tropical Animal Production Research Group, Montería, Colombia., Juan Simanca S, Esp| Universidad de Córdoba, Faculty of Veterinary and Zootechnical Medicine, Tropical Animal Production Research Group, Montería, Colombia., Juan Pérez G, Esp| Corporación Colombiana de Investigaciones Agropecuarias CORPOICA, National Program for Animal Genetics and Biotechnology, C.I. Turipaná, Cereté, Colombia.
Keywords
Related Articles
- EP ID EP3510
- DOI -
- Views 450
- Downloads 23
Study of spanish dove breeds based on the analysis of qualitative morphological characteristics
Objective. To evaluate a possible morphological base that supports a rational and non-arbitrary classification of dove breeds, the phenetic relationship between different breeds was studied. Materials and methods. Twenty...
AISLAMIENTO DE Rickettsia bellii A PARTIR DE GARRAPATAS Amblyomma ovale Y Amblyomma incisum PROCEDENTES DEL SUR DE BRASIL
Objective. To isolate and characterize rickettsiae from the ticks Amblyomma ovale and Amblyomma incisum collected in the state of São Paulo. Materials and methods. Adult, free-living A. ovale and A. incisum were collecte...
Application of the logistic model to describe the growth curve in dogs of different breeds
Objective. To model the growth in dogs of different size and breeds that during their development showed a relative body weight according to the standards of their racial group. Materials and methods. The data used were...
Seminal plasma proteins increase the post-thaw sperm viability of Sanmartinero bull’s semen
Objectives. This study was performed to evaluate the effect of the addition of proteins on the postthawing viability of spermatozoa. Materials and methods. Spermatozoa were frozen with two different media: Citrate-fruc...
Effects of corn oil on the volatile fatty acids in horses with induced gastric ulcers
Objetive. To determine the influence of corn oil on the volatile fatty acids (VFA) concentrations in the gastric juice in horses with phenylbutazone (PBZ) induced gastric ulcers and Correlate the gastroscopic findings wi...