Produção e valor nutritivo de duas cultivares do gênero Cynodon
The objective of this paper was to evaluate the production and nutritional value of different cultivars of Cynodon in the Southwest of Paraná. The experiment was developed at the Universidade Tecnológica Federal do Paraná, in the city of Dois Vizinhos PR, the experimental area was consisted of six p...
| Autor principal: | Borges, Luanderson Centenaro |
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| Formato: | Trabalho de Conclusão de Curso (Graduação) |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2020
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/11258 |
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| Resumo: |
The objective of this paper was to evaluate the production and nutritional value of different cultivars of Cynodon in the Southwest of Paraná. The experiment was developed at the Universidade Tecnológica Federal do Paraná, in the city of Dois Vizinhos PR, the experimental area was consisted of six paddocks of 300 m² (20x15) with spacing between pickets of 1.0 meters, totalizing 1,900 m². Seedlings were planted in spacing of 0.6 meters between rows and 0.5 meters between plants. The Tifton 85 and Coastcross were evaluated. Aiming to make a comparison between the cultivars, it were collected data on total dry matter, leaf blade matter (MSLF), matter stem + sheath (MSC), dead material, other species, in addition to nutritional value in blade portions leaf (LF), stem (CB) and whole plant (PI).The fertilization was 20 kg N ha 1 as urea every two cuts. The samples were collected through cuts close to the ground when the pastures reached 25 cm in height and it were made 3cuts 0.25 m2 in each paddock / repeatition. The stocking rate was calculated from an offer of 5% using lactating animals of Unepe, with occupancy of two days. The samples after drying were triturated and sent to the laboratory of food analysis of UTFPR Campus Dois Vizinhos, being realized analyzes to determine the dry matter (DM), mineral matter (MM), neutral detergent fiber (NDF) fiber in acid detergent (FDA), crude protein (CP) and in vitro digestibility of dry matter (DM). The total production of MS, MSLF, MSC and dead material between the cultivars didn't differ significantly, however, between cutting periods the dead material was lower for the first cut (P <0.05) rising in later. About the nutritional value, MM values didn't differ among cultivars, or over the evaluation period, the PB cultivar Coastcross was superior to the grass Tifton 85 for the LF and PI didn't differ for CB, for the same variable significant differences between periods were observed. For NDF LF, lower levels were found to Coastcross, not differing among cultivars for PI and CB. ADF contents didn't differ among the cultivars for CB, being lower in the LF and PI to cultivate Coastcross, in this variable when comparing the periods it was observed increasing levels of FDA in the first PI for subsequent periods. The IVDMD didn't present significant differences for cultivars, however, evaluating the periods, it was found higher values in the first period. |
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