Evaluación del bioensilaje elaborado con maíz forrajero INIAP 180 y alfalfa a diferentes concentraciones en la estación experimental Tunshi.

Abstract

The objective of this research was to evaluate the biosilage made with INIAP 180-variety forage corn and alfalfa at different concentrations at the Tunshi Experimental Station. A completely randomized design with four treatments and four replications was applied. The treatments evaluated were T0 corn biosilage (control); T1 corn biosilage +10% alfalfa; T2 corn biosilage+20% alfalfa; T3 corn bio-silage + 30% alfalfa, the bio-silage was carried out in 40 kg polyethylene plastic bags, which were added inoculant and left to ferment for 45 days. After this period the silos were opened and with the help of a pH meter, the pH of each treatment was determined. Subsequently, samples of 900 grams of each bio-silage were taken, placed in hermetic bags and the bromatological analysis was determined (moisture, protein, fiber, fat, ash and free nitrogen extract), volatile fatty acids (acetic, butyric and lactic acid), and the economic analysis was also determined. The results showed an acceptable crude protein content in treatments T2 and T3 with a percentage of 9.72 and 11.76, respectively. The pH of the four treatments was found to be within the permissible limits, that is a pH not greater than 4.6. A similar case occurred with the volatile fatty acids of the four treatments, which were within the permissible limits: lactic acid greater than 6%, acetic acid less than 2% and butyric acid less than 1%. It is concluded that the best treatment in the evaluation of the bio-silage was T3, which provided a greater amount of protein 11.76% and a pH of 4.13. It is recommended the use of forage mixtures composed of grasses and legumes, which provide a greater amount of protein in order to improve the bromatological quality of the bio-silage.