Abstract
With this study, we aimed at evaluating the nutritional value and chemical composition of forage legume intercropping with elephant grass (EG) + spontaneous growth species (SGS) + annual ryegrass (AR) + peanut forage (PF), as treatment T1; and EG + SGS + AR + red clover (RD), as T2. The EG was planted in 4- m spaced rows. The annual ryegrass was planted between the EG rows during the cool season; the RC was sowed and the PF was preserved. The experiment was performed between October 2009 and April 2010, with six grazing cycles. Samples of forage legume was collected, under simulated the grazing, to determine the levels of organic matter (OM), crude protein (CP), neutral detergent fiber (NDF), organic matter in situ digestibility (OMISD), total phenols (TF), total tannins (TT), and condensed tannins (CT). The mean values of OM, CP, NDF, OMISD, TF, TT and TC were 90.8, 20.96, 48.38, 86.68, 1.92, 1.42 and 1.39%; and 91.84, 21.41, 41.36, 85.18, 1.90, 1.31 and 0.17% for peanut forage and red clover, respectively. Higher values (p ≤ 0.05) were observed in the level of CT of peanut forage.
Highlights
Milk production is one of the most predominant and important activities in the state of Rio Grande do Sul, especially in small and medium properties
The elephant grass is planted in a singular way, with few studies evaluating this crop associated with other species, aiming the establishment of forage systems (SOBCZAK et al, 2005), for the use of the pasture throughout the crop year, with greater balance between production and quality of the forage
Researches have being undertaken to increase the yield of these systems by introducing legumes with cool season, such as the red clover (PAIM, 1994) or with warm season, like the peanut forage (MACHADO et al, 2005), characterized by a high nutritional value (OLIVO et al, 2009), by Maringá, v. 35, n. 1, p. 57-62, Jan.-Mar., 2013 contributing to the reduction of chemical fertilization (SANTOS et al, 2002) and preventing the sward degradation (AROEIRA et al, 2005)
Summary
Milk production is one of the most predominant and important activities in the state of Rio Grande do Sul, especially in small and medium properties. The elephant grass is planted in a singular way, with few studies evaluating this crop associated with other species, aiming the establishment of forage systems (SOBCZAK et al, 2005), for the use of the pasture throughout the crop year, with greater balance between production and quality of the forage In this way, researches have being undertaken to increase the yield of these systems by introducing legumes with cool season, such as the red clover (PAIM, 1994) or with warm season, like the peanut forage (MACHADO et al, 2005), characterized by a high nutritional value (OLIVO et al, 2009), by Maringá, v. This study evaluated the nutritional value and chemical composition of legumes (peanut forage and red clover) subjected to intercropping with grasses and grazed by dairy cows
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