Efecto de la sustitución energética del maíz (Zea mays) en dietas para rumiantes sobre la producción de metano in vitro

ABSTRACT: The objective of this study was to evaluate the effect of diets based on forage and commercial supplement alternatives that can be used in specialized dairy. We worked with 4 supplements: in the first, the main material for energy supply premium, was the corn grain (Zea mays) (MZ), other supplements were obtained by the replacement of 50% of TDN provided by the grain corn for other commodities such as Sorghum grain (Sorghum vulgare ) (SG), cassava root (Manihot esculenta) (YC) and dried orange citrus pulp (Citrus sinensis) (PCD). The treatments were 60:40 mixtures of forages (F) (Cenchrus clandestinum 37 days of regrowth) with supplements, leaving 4 treatments FMZ, FSG, FYC and FPCD. The variables evaluated were degradation of dry matter (DMS), production of methane (CH4 ), energy losses CH4 and fermentation profile, using in vitro gas production technique (TIVPG). Incubation times were evaluated to 6, 12 and 24 hours. The variables were analyzed via a repeated measures design in time. The comparison of means was performed with a significance level of 5%, by t test. DMS greater was observed at 24 hours for treatment FMZ (65.5%) and less for FPCD (60.6%), digestibility values for FSG and FY were intermediate (62.7 y 62.6%). The production of acetic and butyric acid did not change in any schedule or treatment. Diets tested, the best results for the analyzed variables DMS, production of CH4 (33.3 ml/gMS degradated), and propionic acid (34 mmol/L), were showed by the corn, still the best source to decrease the production of CH4 ,, followed by cassava who presented statistical equality in propionate production in 24 hours (44.3 mmol/L).

• Autores: Restrepo Arias, Catalina; Rosero Noguera, Jaime Ricardo; Posada Ochoa, Sandra Lucía
• Tipo de recurso: Article of investigation
• Fecha de publicación: 2016
• Institución: Universidad de Antioquia
• Repositorio: Repositorio UdeA
• Idioma: spa
• OAI Identifier: oai:bibliotecadigital.udea.edu.co:10495/13639
• Acceso en línea: http://hdl.handle.net/10495/13639; http://www.lrrd.org/lrrd28/10/rest28188.html
• Palabra clave: http://aims.fao.org/aos/agrovoc/c_2159; http://aims.fao.org/aos/agrovoc/c_36108; http://aims.fao.org/aos/agrovoc/c_3197
• Rights: openAccess
• License: Atribución-NoComercial-CompartirIgual (CC BY-NC-SA)