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http://hdl.handle.net/1843/77102| Tipo: | Artigo de Periódico |
| Título: | Effects of monensin in supplements for beef cattle in tropical grazing systems during the rainy season |
| Autor(es): | Marina Pereira Souza Coutinho Alyce Monteiro Carlos Eduardo Avelino Cabral Rodrigo Junqueira Pereira Lívia Vieira de Barros Lucas Gimenes Mota Alexandre Lima de Souza Carla Heloisa Avelino Cabral |
| Resumen: | Two experiments were carried out to evaluate the effect of monensin in supplements for grazing heifers. In experiment I, treatments consisted of protein supplements (low intake – 0.5 kg/animal/day and high intake – 1.0 kg/animal/day) associated or not with monensin. Animal performance, nutrient intake, and digestibility were evaluated. Forty crossbred heifers with an initial body weight (BW) of 213.8 ± 4.5 kg were used. There was no difference in average daily gain between treatments (average of 0.588 kg/animal/day). There was no interaction between monensin and supplements for intake parameters and digestibility. Dry matter (DM) intake was equal between treatments (~ 2% of BW). However, there was a reduction in pasture intake with the high-intake supplement. In experiment II, treatments consisted of two types of supplements (protein or mineral) associated or not with monensin. The variables analyzed were productive performance, ingestive behavior, and thermal comfort, evaluated through the index of thermal stress for cows (ITSC). Forty crossbred heifers with a BW of 159.2 ± 1.3 kg were used. The type of supplement did not influence the performance of the animals. However, monensin promoted greater weight gain in the animals (110 g/animal/day). There was an interaction effect between supplementation and monensin addition on behavioral activities, except for idle time. The inclusion of monensin in the protein supplement reduced the grazing time. The ITSC value influenced the activities of ingestive behavior, and the increase of this index reduced the grazing time in all treatments. Forage quality influences the response to monensin use, and the addition of monensin in supplements for grazing cattle during the rainy season is recommended for forages with high CP content. |
| Asunto: | Bovinos de corte - Alimentação e rações Rações - Aditivos Forragem Pastejo Ionóforos |
| Idioma: | eng |
| País: | Brasil |
| Editor: | Universidade Federal de Minas Gerais |
| Sigla da Institución: | UFMG |
| Departamento: | ICA - INSTITUTO DE CIÊNCIAS AGRÁRIAS |
| Tipo de acceso: | Acesso Restrito |
| Identificador DOI: | https://doi.org/10.1007/s11250-023-03769-z |
| URI: | http://hdl.handle.net/1843/77102 |
| Fecha del documento: | 10-oct-2023 |
| metadata.dc.url.externa: | https://link.springer.com/article/10.1007/s11250-023-03769-z |
| metadata.dc.relation.ispartof: | Tropical Animal Health and Production |
| Aparece en las colecciones: | Artigo de Periódico |
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