Body composition and deposition efficiency of protein and energy in grazing young bulls
| dc.creator | Eriton Egidio Lisboa Valente | |
| dc.creator | Mário Fonseca Paulino | |
| dc.creator | Marcos Inácio Marcondes | |
| dc.creator | Isabela Fernanda Teixeira Dias | |
| dc.date | 2014 | |
| dc.date.accessioned | 2026-07-07T04:00:14Z | |
| dc.description | The effects of supplementation with different protein: carbohydrate ratios on body composition, carcass characteristics and protein and energy deposition efficiency of young were assessed. Twenty-four Nellore calves (132.5 ± 5.5 kg and 90-150 days of age) were kept on pasture for a 430 day experimental period. The treatments were: Control = mineral mixture only; HPHC = high-protein and high-carbohydrate supplement; HPLC = high-protein and low-carbohydrate supplement; LPHC = low- protein and high-carbohydrate supplement; LPLC = low-protein and low-carbohydrate supplement. Four animals at begning and 20 animal at end of experiment were slaughtered to evaluate the carcass composition. Control bulls had the lowest (p < 0.05) intake of ME (9.8 Mcal day-1) with no difference (p > 0.05) between supplemented bulls (13 Mcal day-1). Although non-supplemented bulls had less (p < 0.05) retained protein, retained energy (RE), body weight gain and dressing percentage, differences were not observed (p > 0.05) between supplemented bulls. High-carbohydrate supplements were associated with more (p < 0.05) RE (596.2 Mcal) than low-carbohydrate supplements (515.5 Mcal). Differences were not found (p > 0.05) in the energy efficiency between the groups. Therefore, supplementation increases the intake and retention of protein and energy without changing the retention efficiency. | |
| dc.format | application/pdf | |
| dc.identifier | 1806-2636 | |
| dc.identifier | https://www.redalyc.org/articulo.oa?id=303130421014 | |
| dc.identifier.uri | http://hdl.handle.net/123456789/450275 | |
| dc.language | en | |
| dc.publisher | Universidade Estadual de Maringá | |
| dc.relation | http://www.redalyc.org/revista.oa?id=3031 | |
| dc.rights | Acta Scientiarum. Animal Sciences | |
| dc.source | Acta Scientiarum. Animal Sciences (Brasil) Num.2 Vol.36 | |
| dc.subject | Agrociencias | |
| dc.title | Body composition and deposition efficiency of protein and energy in grazing young bulls | |
| dc.type | artículo científico |