Efecto del polimorfismo del gen de la somatotropina (BGH) sobre características lineales en vacas Holstein
Loading...
Date
2012
Journal Title
Journal ISSN
Volume Title
Publisher
Corporación Universitaria Lasallista
Abstract
Introduction. The selection assisted by molecular
markers allows the modification of the genes´ frequency
within a population, favoring the variables
responsible for zoo technical interest characters.
The gene of the growth hormone is important for the
characteristics related to the animal´s development
and can be associated to the linear characteristics of
the bovine cattle. Objective. To determine the effect
of a polymorphism of the bovine´s growth hormone´s
gene on conformation characteristics in Holstein
cows from the Antioquia province. Materials and
methods. The research work was performed in
eight dairy herds from Antioquia, with 359 records,
with 313 Holstein bovines. The DNA extraction was
performed with the salting out method and the genotyping
was made by means of PCR-RFLP. To
evaluate the association between the polymorphism
and the linear characteristics, a general linear model
was adjusted and the Kruskal Wallis test was used.
Finally, a linear regression was performed in order
to evaluate the allelic substitution effect by the use
of the SAS V.9.0 statistical software. Results. The
polymorphism of the growth hormone´s gene had a
significant effect (P<0.05) on the location of the teat,
central ligament of the udder and the width and the
depth of the udder. No effect was found (P>0.05) for
the other characteristics analyzed. Conclusion. The polymorphism of the growth hormone´s gene is associated
to some characteristics that are important
in dairy production, and therefore it is a gene that
can be a candidate to be used in programs of assisted
selection with molecular markers oriented to
improve the linear characteristics.
Description
Keywords
Corporación Universitaria Lasallista, Somatotropina (BGH), Genética de ganado vacuno, Genética animal, Genética, Ganado - Mejoramiento de la especie, Polimorfismo genético