| Journal: | Anais da Academia Brasileira de Ciencias |
| Database: | PERIÓDICA |
| System number: | 000412277 |
| ISSN: | 0001-3765 |
| Authors: | Dias, Kamila M1 Schmitt, Daniel1 Rodolfo, Giselle R1 Deschamps, Francisco C2 Camargo, Guilherme N1 Pereira, Raphael S1 Sbrissia, Andre F1 |
| Institutions: | 1Universidade do Estado de Santa Catarina, Departamento de Producao Animal e Alimentos, Lages, Santa Catarina. Brasil 2Empresa de Pesquisa Agropecuaria e Extensao Rural de Santa Catarina, Itajai, Santa Catarina. Brasil |
| Year: | 2017 |
| Season: | Sep |
| Volumen: | 89 |
| Number: | 3 |
| Pages: | 1707-1718 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, aplicado |
| English abstract | The milk and meat from animals with a pasture-based diet have higher proportions of CLA and C18:3 and lower omega-6:omega-3 ratios than products from animals with diets based on corn silage and concentrate. However, most of the published studies have evaluated fatty acid profiles in temperate climate grasses and the literature with tropical grasses is scarce. Thus, the aim of this study was to evaluate the morphological and fatty acid compositions in the vertical strata of elephant grass (Pennisetum purpureum Schum.) swards subjected to grazing heights (90 or 120 cm pre-grazing heights) and levels of defoliation (50% or 70% removal of the initial pre-grazing height). There were no interactions among pre-grazing height, the level of defoliation and grazing stratum. However, higher proportion of C18:3 (58% and 63%) was found in the 90-cm swards and in the half upper stratum. A higher proportion of C18:3 was associated with a higher leaf proportion and crude protein content. Thus, the upper stratum of sward or a grazing management scheme (e.g. first-last stocking) resulting in a higher proportion of leaves and crude protein both provide higher proportions of C18:3 to animals grazing in elephant grass swards |
| Disciplines: | Agrociencias |
| Keyword: | Gramíneas, Plantas forrajeras, Análisis nutricional, Acidos grasos poliinsaturados, Acido linoleico, Pennisetum purpureum, Poaceae |
| Keyword: | Agricultural sciences, Gramineae, Forage plants, Nutritional analysis, Polyunsaturated fatty acids, Linoleic acid, Pennisetum purpureum, Poaceae |
| Full text: | Texto completo (Ver HTML) |
