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| Vedovatto,Marcelo; Diogo,José Mauro da Silva; Beltrame,João Artêmio Marin; D'Oliveira,Marcella Cândia; Silva,Cássio José da; Mendes,Clayton Quirino; Cabral Filho,Sergio Lucio Salomon; Franco,Gumercindo Loriano. |
| ABSTRACT The objective was to evaluate the addition of antibiotic growth promoters to free-choice mineral supplement on ingestive behavior, mineral intake, and growth performance of grazing bulls. Sixty Nellore bulls [initial body weight (BW) of 219±17.8 kg and 15±2 months of age] were divided in 12 marandu grass paddocks. The treatments were: mineral supplement (control), mineral supplement + virginiamycin (VIRG), mineral supplement + lasalocid sodium (LASA) and mineral supplement + salinomycin sodium (SALI). Mineral supplements were formulated with target intake of 60 g d−1 and the growth promoters of 75 mg 100 kg−1 of BW. The experimental design was the completely randomized blocks. There was no treatment effect on ingestive behavior or mineral intake;... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Feed additive; Cattle; Ionophore; Lasalocid; Salinomycin; Virginiamycin. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100706 |
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| D'Oliveira,Marcella Cândia; Souza,Maria Inês Lenz; Ítavo,Camila Celeste Brandão Ferreira; Corrêa Filho,Ruy Alberto Caetano; Morais,Maria da Graça; Negrão,João Alberto; Franco,Gumercindo Loriano. |
| The objective was to determine the effects of driving on the growth of steers during 55 days of moving by drive and 84 days after the arrival. Twenty-five steers were randomly chosen from a herd of 1,000 Nellore cattle, which were evaluated in two periods: the driving period, in which animals were moved a distance of 700 km on foot for 55 d; and the post-driving period, which lasted 84 d. Serum samples were obtained for hormone dosing (T3, T4, cortisol, and IGF-I) by radioimmunoassay using commercial kits. The data was collected at different time points during the experiment. No changes in live weight were observed between days 0 and 55. During the post-driving period, on the 28th, 56th, and 84th d, the average weights were 226.10 kg, 224.28 kg, and 242.6... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Compensatory gain; Metabolism; Post-driving; Transportation. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014001000551 |
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