Evaluación de la técnica de bolsa móvil de nylon para determinar la digestibilidad de proteína cruda en cerdos
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Date
2009
Journal Title
Journal ISSN
Volume Title
Publisher
Corporación Universitaria Lasallista
Abstract
Introduction. The direct determination of nutritional
values in food implies, principally, the surgical
modification of the animals. In recent years there has
been a great interest about the necessity of using
other techniques of digestibility with less traumatic
effects for determining the Total Coefficients of Raw
Protein Digestibility (DTPC, in Spanish). Objective.
To determine the Total Coefficients of Raw Protein
Digestibility from different raw materials. The Mobile
Nylon Bag Technique (TBMN in Spanish) was
used with no pre-digestion in pigs. Materials and
methods. 6 pigs were used (with a 35±0.5 kg weight)
in the San Pablo Production Center, which belongs
to Universidad Nacional de Colombia. Three energy
sources were chosen: Corn, sorghum and cassava;
Three protein sources: Soybean cake, fish flour
and meat flour. Also, three fiber sources were used:
Wheat bran, grits and palm kernel cake. Results.
For the Total Coefficients of Raw Protein Digestibility
variable, the highest values were obtained were
(P>0.05) with soybean cake (97.2%), while palm
kernel cake (71.4%) and cassava (61.2%) had
(P<0.05) the lowest coefficients. Discussion. In
food rich in crude protein the contamination with not
dietary nitrogen (NDN) is low and does not affect the
coefficients. Nevertheless, in foods with high fiber
contents or low PC levels, the contamination with
not dietary nitrogen affects the coefficients when the
Mobile Nylon Bag Technique is used. Conclusions.
The Mobile Nylon Bag Technique allows minimizing
the stress caused by surgery in animals which are
subject of experiments. The Total Coefficients of
Raw Protein Digestibility, using the Mobile Nylon
Bag Technique with no pre-digestion, is not different
from the values reported in the literature.
Description
Keywords
Cerdos, Proteína cruda, Proteínas en la nutrición animal, Corporación Universitaria Lasallista, Cerdos - Alimentación y alimentos, Cerdos - Nutrición, Digestibilidad, Técnica bolsa móvil de naylon (TBMN)