Data/hora: 08/06/2024 04:49:32

Biblioteca(s): | Embrapa Agrossilvipastoril.
Data corrente: | 29/09/2020
Data da última atualização: | 29/09/2020
Autoria: | SANTOS, A. R. M. dos; BARROS, L. V. de; ABREU, M. L. C.; PEDREIRA, B. C. e.
Afiliação: | ALYCE RAIANA MONTEIRO DOS SANTOS, UFMT, Cuiaba-MT; LÍVIA VIEIRA DE BARROS, UFMT, Cuiabá-MT; MATHEUS LIMA CÔRREA ABREU, UFMT, Cuiabá-MT; BRUNO CARNEIRO E PEDREIRA, CPAMT.
Título: | In vitro ruminal fermentation parameters and methane production of Marandu palisadegrass (Urochloa brizantha) in a silvopastoral system associated with levels of protein supplementation.
Ano de publicação: | 2020
Fonte/Imprenta: | Grass and Forage Science, v. 75, n. 3, p. 339-350, 2020.
DOI: | https://doi.org/10.1111/gfs.12476
Idioma: | Inglês
Conteúdo: | The addition of protein supplementation in a silvopastoral system can contribute to improved forage intake and digestibility. Our objective was to evaluate in vitro ruminal parameters, digestibility and gas production of Marandu palisadegrass [Urochloa brizantha (Hochst. ex A. Rich.) R. D. Webster] in a silvopastoral system and compare this to parameters obtained from diets with protein supplementation. Forage was sampled during the growing season (November to April) in 2016/17 and 2017/18. In vitro incubation treatments consisted of four levels of protein supplement (20% of crude protein; CP) in the diet (0.1, 0.2, 0.3 and 0.4 g/kg of body weight). The neutral detergent fibre, acid detergent fibre and indigestible neutral detergent fibre concentrations were highest in the first year. In the second year, CP concentration was 21% greater than in the first year. There was a linear increase for digestion rate, a quadratic effect for lag time and a linear decrease for average digestion time as supplementation levels were increased. The least lag time and digestion time occurred in the second year. There was no supplementation effect on ruminal pH, acetate and butyrate concentrations. Second&#8208;year in vitro dry matter digestibility (IVDMD) was greater than in the first year. Increases in supplementation levels linearly enhanced IVDMD and reduced methane (CH4) production. The inclusion of a protein supplement contributed to reduced CH4 and increased volatile fatty acids production; therefore, we recommended the supplement inclusion of >0.28 g/kg of BW for animals grazing in well&#8208;managed palisadegrass pastures.
Palavras-Chave: | Mato Grosso; Sinop-MT.
Thesagro: | Brachiaria Brizantha.
Thesaurus Nal: | Concentrates; Greenhouses.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
Registro original: | Embrapa Agrossilvipastoril (CPAMT)
Exemplares: | CPAMT - (1538-1) - UPC - AP - DD -  -  -  - DIS