Mango tree pruning hay in substitution of elephant grass in cattle diet

Abstract

This experiment was conducted to evaluate the effect of different levels of substitution (0, 33.3, 66.7, and 100 %) of elephant grass by hay of mango tree pruning (HMTP) on intake and digestibility in cattle and on the in vitro gas production. Moreover, the effect of tannin in HMTP on the gas production and in vitro degradability of the dry matter was evaluated, using polyethylene glycol (PEG). The intake and digestibility were evaluated in a double 4 × 4 square Latin design, using eight Holstein intact bulls. To evaluate the gas production and degradability, in vitro semi-automated gas production technique was used. The substitution of elephant grass by HMTP decreased the intake (P<0.05) and the digestibility (P<0.05) of the nutrients and also the gas production (P<0.05). Furthermore, the utilization of PEG as a tannin-complexing agent increased the gas production and degradability of the HMTP (P<0.05). It was concluded that the high cell wall lignification and the presence of tannin limit the use of HMTP as the only source of roughage in cattle diets.

Efecto de podas fitosanitarias en poblaciones de Aulacaspis tubercularis Newstead (Hemiptera: Diaspididae) y sus enemigos naturales

“…La poda, es una práctica indispensable para mantener la productividad en huertos de mango, se lleva a cabo con la finalidad de estimular la producción y calidad de los frutos, facilitar el manejo agronómico, mantener un tamaño apropiado de los árboles, aumentar la incidencia de rayos solares en la fruta y eliminar ramas dañadas por plagas y enfermedades (Vázquez et al, 2009;De Souza Rodrigues et al, 2013). Recientemente, Pérez et al (2016), determinaron que las podas en árboles de mango, en combinación con aplicación de detergente, disminuyen las poblaciones de EBM en Nayarit, México.…”