Evaluación de la frecuencia de corte del pasto saboya (Panicum máximum) cv. Tanzania en la parroquia La Belleza, cantón Francisco de Orellana.

Abstract

It was designed a completely randomized block study in order to evaluate the best cutting frequency of the savoy grass, Panicum maximum cv. Tanzania in which three cutting frequencies (30, 45 and 60) days and two cutting heights with respect to ground height (30 and 45) cm were compared. The established treatments were: T1 = 30 days at 30 cm; T2 = 30 days at 45 cm; T3 = 45 days at 30 cm; T4 = 45 days at 45 cm; T5 = 60 days at 30 cm and T6 = 60 days at 45 cm cut. Agronomic and chemical composition data were obtained, in addition, through calculations the nutritional value index was estimated. The data were processed using the statistical software SAS v. 9.4, under a general linear model, considering the treatments as fixed effects. Their arithmetic means were presented as least squares (LSM) and compared with a Tukey's test. Statistical differences were declared at a p value less than 0.05, while statistical trends at a p less than 0.10. Of the agronomic parameters, with the exception of the coverage expressed in% / m2 (24.80 plusminus 4.0%; p = 0.66), the (T6) showed higher biomass production (kg DM / ha-1 ) Compared to the other treatments, the content of cell walls was (greater than 50% for NDF and greater than 40% for FAD), the digestibility was (less than 50%). In conclusion, it was obtained a better nutritional composition data when the grass was cut at 45 cm in height with cutting frequencies, every 45 days. It is recommended to take advantage of the grass cv. Tanzania at cutting frequencies of 45 days and cutting heights of 45 cm at ground level in order to obtain sufficient nutritional reserves on regrowth.