Nutritional characterization of Gliricidia sepium in a saline and high drought ecosystem of the Cauto river basin, Cuba
An experimental sequence with Gliricidia sepium forage was carried out, from a saline and high drought ecosystem of the Cauto river basin, in Granma, Cuba, to determine the chemical composition, in situ effective ruminal degradability (ED) of dry matter (DM) and in vitro apparent and true digest...
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| Natura: | Artículo |
| Lingua: | English |
| Pubblicazione: |
2018
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| Accesso online: | http://cjascience.com/index.php/CJAS/article/view/826 |
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| Riassunto: | An experimental sequence with Gliricidia sepium forage was
carried out, from a saline and high drought ecosystem of the
Cauto river basin, in Granma, Cuba, to determine the chemical
composition, in situ effective ruminal degradability (ED) of dry
matter (DM) and in vitro apparent and true digestibility of DM,
organic matter, neutral detergent fiber and acid detergent fiber using
the Daysi @ procedure. For the study of in situ degradability,
times of 6, 12, 24, 36, 48 and 72 h were used. In the contents of the
chemical composition values of 24.79, 36.32, 19.51, 16.81, 0.16 and
18.74 % were found for crude protein, neutral detergent fiber, acid
detergent fiber, hemicellulose, lignin and cellulose, respectively.
The kinetic degradation performance was characterized by an
increase in the dynamics disappearance of the dry matter with
the incubation time in the rumen, while in the effective ruminal
degradability of DM values between 63.1 and 67.6 % were obtained
for different constants of ruminal replacement. The fit of the in situ
ruminal degradability data to the proposed model, P = a + b (1 - e-ct),
showed R2
higher to 97.00. The estimates of apparent digestibility
of dry matter, organic matter, neutral detergent fiber and acid
detergent fiber maintained values of 73.57, 64.25, 26.72 and
14.35 % respectively, much lower than true digestibilities, with
17.88, 67.14, 27.93 and 15.00 % for these same constituents,
respectively. The results of the analysis of the chemical composition,
in situ ruminal degradability of the dry matter and in vitro apparent
and true digestibility of the dry matter, organic matter, neutral
detergent fiber and acid detergent fiber of Gliricidia sepium show
its high nutritional value for ruminants in the region. However,
physiological studies that relates the cut frequency, degree of use
of nutrients by the animal and effect of some secondary metabolites
on the physiological and productive responses of the animals when
intakes the plants in these edaphoclimatic conditions are required. |
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