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| Nuñez,Amoracyr José Costa; Caetano,Mariana; Berndt,Alexandre; Demarchi,João José Assumpção de Abreu; Leme,Paulo Roberto; Lanna,Dante Pazzanese Duarte. |
| Zebu cattle fed high concentrate diets may present inconsistent performance due to the occurrence of metabolic disorders, like acidosis. The isolated use of ionophores and virginiamycin in high grain diets can improve animal performance and reduce the incidence of such disorders, but recent studies suggested that their combination may have an additive effect. Thus, 72 Nellore steers, 389 ± 15 kg initial body weight (BW), were confined and fed for 79 days to evaluate the combination of virginiamycin and salinomycin on performance and carcass traits. Animals were allocated to a randomized complete block design by BW, in a 2 × 2 factorial arrangement of treatments, with two concentrate levels (73 and 91 %) and two virginiamycin levels (0 and 15 mg kg-1), and... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000400002 |
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| Michelotti,Tainara Cristina de Abreu; Silva,Ricardo Antonio da; Carneiro,Jorge Henrique; Navarro,Rodrigo Barros; Carvalho,Igor Quirrenbach de; Paula,Eduardo Marostegan de; Ferraretto,Luiz Felipe; Caetano,Mariana; Lanna,Dante Pazzanese Duarte; Almeida,Rodrigo de. |
| ABSTRACT: 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... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ensiling period; Fecal starch; Whole-plant corn silage. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000200401 |
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