Submitted by Jos? Henrique Henrique (jose.neves@ufvjm.edu.br) on 2018-08-07T17:20:56Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) hugo_vinicius_lelis_silveira.pdf: 433611 bytes, checksum: f5247fb74b25f1503149b9815b9e8d6e (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2018-10-05T19:15:12Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) hugo_vinicius_lelis_silveira.pdf: 433611 bytes, checksum: f5247fb74b25f1503149b9815b9e8d6e (MD5) / Made available in DSpace on 2018-10-05T19:15:12Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) hugo_vinicius_lelis_silveira.pdf: 433611 bytes, checksum: f5247fb74b25f1503149b9815b9e8d6e (MD5) Previous issue date: 2017 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Objetivou-se com este trabalho avaliar os efeitos da adi??o de doses crescentes do subproduto torta de polpa de Acrocomia aculeata (maca?ba) sobre o valor nutritivo, caracter?sticas fermentativas, perdas do processo fermentativo e influ?ncia na estabilidade aer?bica de silagens de capim-elefante (Pennisetum purpureum Schum.). O delineamento experimental foi inteiramente casualizado com 4 repeti??es. Os tratamentos foram constitu?dos pela forrageira capim-elefante aditivada de seis doses de torta de polpa de coco de maca?ba com base na mat?ria natural (0, 6, 12, 18, 24, 30%). A planta forrageira passou por per?odo de 150 dias de amarmazenamento em silos experimentais de polietileno (PVC). Foi determinado o valor nutritivo, as caracter?sticas fementativas, as perdas e a estabilidade aer?bia.Verificou-se efeito linear crescente (P <0,05) das doses de TPCM sobre o teor m?dio de mat?ria seca (MS), extrato et?reo (EE), lignina, carboidratos n?o fibrosos (CNF) e digestibilidade in vitro da mat?ria seca (DIVMS) das silagens de capim-elefante, entretanto, os teores de fibra em detergente neutro (FDN), fibra em detergente neutro corrigida para cinzas e prote?na (FDNcp), fibra em detergente ?cido (FDA) e prote?na bruta (PB) foram reduzidos linearmente (P<0,05) ? medida que se elevou a adi??o de TPCM. A inclus?o de TPCM elevou linearmente (P<0,05) os valores de pH e reduziu os valores de nitrog?nio amoniacal (N-NH3) das silagens. Os valores de produ??o de efluentes na silagem decresceram linearmente (P<0,05) com a inclus?o do aditivo. Os valores de perda por gases apresentaram resposta quadr?tica (P<0,05) ? medida que se elevou a adi??o de TPCM nas silagens. A estabilidade aer?bica foi afetada nas silagens de capim-elefante, mostrando uma eleva??o na estabilidade a medida que se elevava a dose de inclus?o da TPCM. De forma geral a adi??o da TPCM melhora o valor nutritivo e os par?metros fermentativos da silagem de capim-elefante, sendo recomendado a inclus?o de 15 % desse aditivo. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2017. / The objective of this work was to evaluate the effects of the addition of doses of Acrocomia aculeata pulp by-product (maca?ba) on nutritive value, fermentative characteristics, losses of fermentation and influence on aerobic stability of Elephant grass silages (Pennisetum Purpureum Schum.). The experimental design was completely randomized with 4 replicates. The treatments were constituted by Elephant grass forage with six leves of maca?ba coconut pulp cake (MCPC) based on natural matter (0, 6, 12, 18, 24, 30%). The silos were storage by 150 days in experimental polyethylene (PVC) silos. The nutritive value, fementative characteristics, losses and aerobic stability were determined. There was an increasing linear effect (P <0.05) of MCPC doses on the mean dry matter (DM), ether extract (EE), non-fibrous carbohydrates (NFC) and in vitro dry matter digestibility (IVDMD) of Elephant grass silages. However, neutral detergent fiber (NDF), neutral detergent fiber corrected for ash and protein (FDNcp) , acid detergent fiber (ADF), and crude protein (CP) were linearly reduced (P <0.05) as the addition of MCPC was increased. The inclusion of MCPC linearly increased (P <0.05) the pH values and reduced the ammoniacal nitrogen (N-NH3) values of the silages. The values of effluent production in the silage decreased linearly (P <0.05) with inclusion of the additive. The gas loss values presented a quadratic response (P <0.05) as the addition of MCPC to the silages increased. Aerobic stability was affected in Elephant grass silages, showing an increase in stability as the inclusion dose of MCPC was increased. In general, the addition of MCPC improves the nutritive value and fermentative parameters of Elephant grass silage. Recommended the inclusion of 15% of this additive.