Evaluación de moduladores naturales y químicos sobre la cinética ruminal in vitro y sus implicaciones en la salud del rumen

Abstract

The multiple feeding strategies seek to reduce the emission of enteric CH4 as a result of ruminal fermentation and reduce energy expenditure in ruminants, seeking to mitigate the harmful effects produced in the atmosphere by this gas and favor the productive efficiency and health of the animal. The present research work investigated modulators of ruminal kinetics using secondary metabolites, enzymes and immediately available energy sources in order to study their beneficial effects on rumen health during physiological stages of high metabolic demand such as postpartum. In the main results, the associated effect of polyphenols present in tanniferous shrubs and prebiotics such as mannan oligosaccharides was observed, which significantly influenced (p=0.0001) the average rate of gas production (1.66 mL/h), enteric methane emission (46.4 mL/g/24h) and improving in vitro digestibility (73.5 DVMS24h mg/g). Ammoniacal nitrogen concentrations under in vitro conditions were significantly influenced (p=<.001) by diets that included polyphenols present in tanniferous shrubs and prebiotics such as mannan oligosaccharides (116.39 NH3-N mg/L-1) in contrast to treatments with conventional raw materials. Propionic acid significantly increased (p=<.001) its molar proportion (22.27 mol/100mol) in diets that included polyphenols present in tanniferous shrubs and prebiotics such as mannan oligosaccharides compared to the molar proportion of diets based on raw materials. conventional (16.62 mol/100mol). It is concluded that alterations in the rumen function parameters studied predispose to the development of metabolic diseases such as ketosis and ruminal acidosis.