DYNAMICS OF THE IN VITRO RUMINAL FERMENTATION OF THE INTEGRAL MIXTURE OF PRE-DRIED AND ENSILED SWEET POTATO (IPOMOEA BATATA, L.)
With the gas production technique, the in vitro fermentative dynamics of the integral mixture of pre-dried sweet potato (CPS) and ensiled (ECI) was evaluated with respect to the ground corn grain (GMM), as an energy reference, and an incubation time of 72 hours. The silage process did not appreciably affect the chemical composition, except for NDF, which decreased. In the incubation period from 2 to 4 hours, the accumulated gas production (PAGiv, mLg-1MOinc) did not present a difference between treatments, in the period from 4 to 12 hours the PAGiv increased rapidly, but with a greater increase with CPS and without difference between GMM and ECI; from 12 to 72 hours the PAGiv was similar for CPS and GMM and lower for ECI. The colonization or hydration time of the substrate (lag phase) presented values ??of 2.53, 2.61 and 3.03 hours for CPS, ECI and GMM, respectively. Regarding the Gompertz parameters, GMM presented the highest potential gas production (348.90), followed by CPS and ECI; CPS obtained the highest average gas production rate, followed by ECI and GMM. Parameter C indicated a greater synthesis of microbial biomass for the integral mixtures of sweet potato. It was concluded that the silage process affected the accumulated gas production, which was greater for GMM, but the sweet potato mixtures presented a higher average rate of gas production and synthesis of microbial mass.
| Main Authors: | , , , |
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Universidad de Panamá, Facultad de Ciencias Agropecuarias
2023
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| Online Access: | https://revistas.up.ac.pa/index.php/investigaciones_agropecuarias/article/view/3899 |
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