“Evaluación de la degradabilidad ruminal a diferentes tiempos del pasto Saboya (Panicum maximun) a tres diferentes edades en la parroquia Lodana del cantón Santa Ana Santa Ana

Abstract

The present work was developed in the area of production of the Faculty of Veterinary Medicine of the UTM and had as objective to evaluate the ruminal degradability of the savoy grass and the bromatological composition at three different cutting ages, a change block design was used for To evaluate ruminal degradability, the individuals used were two bovine fistulate females of the Veterinary Medicine race, which were housed. The chemical composition of the savoy grass was evaluated in the laboratory of bromatology of the Faculty of Veterinary Medicine, analyzing: dry matter, protein, moisture, NDF and FDA, at different ages of cut (15, 30 and 60 days) Rumen degradability It was made in situ with nylon bags with the forage in study (Savoy grass). Different degradability times 3, 6, 12, 24, 48 and 72 hours were evaluated. A variation in the percentage of crude protein was found in each of the treatment ages, having 17.51% in the pasture of 15 days of age; 15.04% in the 30-day-old and 5.56% of crude protein in the 60-day-old grass and in terms of dry matter. A variation in protein and dry matter could be noted as the age increased of the grass, since in the youngest pasture (15 days of age) higher levels of protein and lower dry matter were found, unlike the 60-day pasture that had low protein values and high dry matter values, having as the ideal age, 30-day-old grass, finding propitious levels of protein and dry matter. Regarding ruminal degradability, the pasture of 15 days of age was highly significant at 3, 6, 12, 24, 48, and 72 hours of rumen incubation. At 48 hours the pasture of 15 days was highly significant (Pr <0.001) with a rumen degradability of 73.85% and a standard deviation of 1.16, likewise at 72 hours it was found significant (Pr <0.001) grass of 15 and 30 days of age with degradability percentages of 77.44 at 15 days and 70.58% at 30 days Although better ruminal degradability results were found for the 15-day pasture, it is recommended to provide the 30-day-old pasture since it showed better values in the bromatological analysis with adequate levels of protein and dry matter. Keywords: Degradability, Chemical composition, Protein, Dry matter