| Revista: | Scientia Agricola |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000456220 |
| ISSN: | 0103-9016 |
| Autores: | Michelotti, Tainara Cristina de Abreu1 Silva, Ricardo Antonio da1 Carneiro, Jorge Henrique1 Navarro, Rodrigo Barros2 Carvalho, Igor Quirrenbach de3 Paula, Eduardo Marostegan de4 Ferraretto, Luiz Felipe5 Caetano, Mariana6 Lanna, Dante Pazzanese Duarte7 Almeida, Rodrigo de1 |
| Instituciones: | 1Universidade Federal do Parana, Departamento de Zootecnia, Curitiba, Parana. Brasil 2Capal Cooperativa Agroindustrial, Arapoti, Parana. Brasil 3G12Agro Pesquisa e Consultoria Agronomica, Guarapuava, Parana. Brasil 4Instituto de Zootecnia, Centro APTA Bovinos de Corte, Sertaozinho, Sao Paulo. Brasil 5University of Florida, Department of Animal Sciences, Gainesville, Florida. Estados Unidos de América 6University of Adelaide, Department of Animal and Veterinary Bioscience, Roseworthy, Australia del Sur. Australia 7Universidade de Sao Paulo, Depto. de Zootecnia, Piracicaba, Sao Paulo. Brasil |
| Año: | 2021 |
| Volumen: | 78 |
| Número: | 2 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, analítico |
| Resumen en inglés | Ensiling corn for longer periods is a strategy used to increase rumen bacteria access to starch. In fact, when corn is ensiled for insufficient periods, starch digestibility decreases, as evidenced by excreted starch. This study investigates the effects of corn silage ensiling time on starch digestibility of dairy cows through fecal starch analysis. The trial was conducted during the spring of 2013 and the fall of 2014 on twenty dairy herds located in the state of Paraná, southern Brazil. Total mixed ration (TMR), whole-plant corn silage (WPCS) and fecal samples were collected for determination of dry matter (DM), neutral detergent fiber (NDF), acid detergent fiber (ADF), lignin and starch. Apparent total tract starch digestibility (ATTSD) was calculated using equations developed by Fredin et al. (2014) and Bal et al. (1997). Data were analyzed using the CORR, REG and GLM procedures of SAS. Spring and fall WPCS were ensiled for 260 and 132 days, respectively (p < 0.01). There was no difference (p > 0.05) in ATTSD-Fredin from season to season though there was a trend (p = 0.11) towards greater ATTSD-Bal for spring samples. ATTSD-Bal was positively correlated with ensiling days (r = 0.31). Starch digestibility was not negatively affected by WPCS harvesting maturity. Differences in post-ruminal starch digestion, variation between farms in DM intake and diets, limitations of the equations, influence of uncontrolled factors, and the small number of experimental units might have contributed to the absence of significant results. Overall, Bal et al. (1997) equation was more efficient in distinguishing ATTSD from different ensiling periods |
| Disciplinas: | Medicina veterinaria y zootecnia |
| Palabras clave: | Nutrición animal, Ensilado, Digestibilidad, Almidón, Brasil |
| Keyword: | Animal nutrition, Silage, Digestibility, Starch, Brazil |
| Texto completo: | Texto completo (Ver HTML) Texto completo (Ver PDF) |
