| Revista: | Scientia Agricola |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000455496 |
| ISSN: | 0103-9016 |
| Autores: | Polizel, Daniel Montanher1 Marques, Samuel Sutil2 Westphalen, Mariana Fontana3 Gouvea, Vinícius Nunes4 Ferraz-Júnior, Marcos Vinícius de Castro5 Miszura, Alexandre Arantes6 Barroso, José Paulo Roman6 Limede, Arnaldo Cintra6 Ferreira, Evandro Maia1 Pires, Alexandre Vaz1 |
| Instituciones: | 1Universidade de Sao Paulo, Escola Superior de Agricultura "Luiz de Queiroz", Piracicaba, Sao Paulo. Brasil 2Universidade Estadual de Ponta Grossa, Departamento de Zootecnia, Ponta Grossa, Parana. Brasil 3Pennsylvania State University, College of Agricultural Sciences, University Park, Pensilvania. Estados Unidos de América 4New Mexico State University, College of Agricultural, Consumer and Environmental Sciences, Clayton, Victoria. Estados Unidos de América 5Universidade Federal do Amazonas, Departamento de Zootecnia, Parintins, Amazonas. Brasil 6Universidade de Sao Paulo, Faculdade de Medicina Veterinaria e Zootecnia, Pirassununga, Sao Paulo. Brasil |
| Año: | 2021 |
| Volumen: | 78 |
| Número: | 6 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, analítico |
| Resumen en inglés | Narasin is an antibacterial agent that may change rumen fermentation. Two experiments were proposed to evaluate the efficiency of narasin inclusion for lambs fed a diet containing high amounts of ground flint corn. Thirty rumen-cannulated wethers were used to evaluate nutrient digestibility, nitrogen balance, and rumen metabolism (Exp. 1); and forty-five lambs were used to evaluate performance (Exp. 2) of animals fed with narasin for high flint corn diets. The experimental diets were: control or basal diet without additives (C); 25 mg of monensin kg−1 of dry matter (DM) (M); and inclusion of 5 (N5), 10 (N10), and 15 (N15) mg of narasin kg−1 of DM. The statistical analyses were performed using the MIXED procedure of SAS. Monensin increased DM digestibility compared to C ( p = 0.01) and increasing doses of narasin linearly increased DM digestibility ( p < 0.01). There was a quadratic effect ( p = 0.10) for molar proportion of acetate peaking at N15. Monensin inclusion increased ( p = 0.07) propionate compared to C; however, it did not differ from narasin. The increasing levels of narasin linearly decreased the total volatile fatty acids concentration in the rumen ( p = 0.02). Monensin and C showed a similar performance. The increasing levels of narasin linearly increased ( p ≤ 0.04) average daily gain and feed efficiency. Monensin and narasin changed rumen fermentation and improved overall nutrient digestibility. However, lambs that received narasin showed improved performance when compared with animals that received M |
| Disciplinas: | Medicina veterinaria y zootecnia |
| Palabras clave: | Ovinos y caprinos, Nutrición animal, Corderos, Narasina, Maíz, Rumen |
| Keyword: | Sheep and goats, Animal nutrition, Narasin, Lambs, Corn, Rumen |
| Texto completo: | Texto completo (Ver HTML) Texto completo (Ver PDF) |
