Efecto del tamaño de camada y número de parto en el crecimiento de cuyes(Cavia porcell us Rodentia: caviidae)
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Date
2010
Journal Title
Journal ISSN
Volume Title
Publisher
Corporación Universitaria Lasallista
Abstract
Guinea pig is a species with a great potential to
produce animal origin protein, given its precocity
and fast growth, but just a few reports evaluate
the growth of this species and its reproductive
characteristics. One way to describe the growth
of Guinea pigs is by the use of mathematic non-lineal models, previously used to study many other
species, given their easy calculations and data
adjustment. Objective. To describe the growth
curve of female Guinea pigs by the use of a non
linear model and evaluate the correlation of the
breed´s size and the delivery number on the parameters of the curves, weight and maturity at different ages. Materials and methods. 2505 weight
records of 501 female Guinea pigs were analyzed
in the delivery and the weaning, at four, eight and
twelve weeks of age. The curve was taken by the
use of a Von Bertalanffy´s non linear model. The
significance of the independent variables was
determined, maturity at 90 (M90) and 120 days
(M120), and the weight at 15 (P15), 30 (P30), 60
(P60) and 90 days (P90) by the use of a mixed
model that included the effects of the breeds´
size, delivery number, contemporary group and
common environment. Results. The variance
analysis determined that there is a correlation
between the breed’s size and the delivery number for the β
1
, M90, M120, P15, P30 P60 y P90
variables; while there was no correlation for the
weight at 120 (P120) and 180 days (P180), and
the animals had a similar growth. Conclusions.
Von Bertalanffy´s non linear model was useful
to adjust the weights of the female Guinea pigs
and the modeling of the growth of that species.
On the other hand, it was evidenced that a higher
number of deliveries brought a faster maturity of
young Guinea pigs
Description
Keywords
Crecimiento, Corporación Universitaria Lasallista, Modelo de Von Bertalanffy, Cavia porcellus (rodentia: caviidae), Modelos matemáticos no lineales, Crecimiento (animales)