Theme 18: Agro-Silvipastoral Systems
Description
A trial was conducted in Brazil to evaluate the nutritive quality of 6 tropical grasses: tanzania (Panicum maximum cv. Tanzania), green-panic (P. maximum var. Trichoglume), aruana (P. maximum cv. Aruana), brizanta (Brachiaria brizantha), humidicola (B. humidicola) and tifton-85 (Cynodon dactylon cv. Tifton 85), planted under two different densities of pines (Pinus elliottis): 200 and 400 stems/ha, as well as in full sunlight. The results showed a significant increase in protein content and a significant decrease in NDF and cellulose contents as tree density increased. Comparing the values obtained under shading conditions with those obtained in the open, it was observed an increase in the contents of CP (+2,47), ADF (+0,73), lignin (+1,38), ash (+0,87) and in the digestibility (+2,16), and a decrease in the contents of NDF (-3,46), hemicellulose (-4,19) and cellulose (-1,20) in percentage units. Tanzania presented the best nutritive quality under shade: 13 % CP, 32 % cellulose, 5 % lignin and a digestibility of 54%. This grass was also the best under full sunlight, showing that it was the less sensitive to shading. It was concluded that, although less productive, the nutritive quality of tropical grasses was enhanced by shading.
Citation
Gutmanis, D.; Lourenço, Antonio João; Alcantara, V. B. G.; and Colozza, Maria T., "Nutritive Quality of Tropical Grasses Sown under a Pine Plantation" (2021). IGC Proceedings (1993-2023). 13.
https://uknowledge.uky.edu/igc/19/18/13
Included in
Nutritive Quality of Tropical Grasses Sown under a Pine Plantation
A trial was conducted in Brazil to evaluate the nutritive quality of 6 tropical grasses: tanzania (Panicum maximum cv. Tanzania), green-panic (P. maximum var. Trichoglume), aruana (P. maximum cv. Aruana), brizanta (Brachiaria brizantha), humidicola (B. humidicola) and tifton-85 (Cynodon dactylon cv. Tifton 85), planted under two different densities of pines (Pinus elliottis): 200 and 400 stems/ha, as well as in full sunlight. The results showed a significant increase in protein content and a significant decrease in NDF and cellulose contents as tree density increased. Comparing the values obtained under shading conditions with those obtained in the open, it was observed an increase in the contents of CP (+2,47), ADF (+0,73), lignin (+1,38), ash (+0,87) and in the digestibility (+2,16), and a decrease in the contents of NDF (-3,46), hemicellulose (-4,19) and cellulose (-1,20) in percentage units. Tanzania presented the best nutritive quality under shade: 13 % CP, 32 % cellulose, 5 % lignin and a digestibility of 54%. This grass was also the best under full sunlight, showing that it was the less sensitive to shading. It was concluded that, although less productive, the nutritive quality of tropical grasses was enhanced by shading.
