Data/hora: 01/06/2024 18:08:28

Provedor de dados: | Acta Scientiarum: Animal Sciences
País: | Brazil
Título: | Body composition and deposition efficiency of protein and energy in grazing young bulls
Autores: | Valente, Eriton Egidio Lisboa; Universidade Estadual do Oeste do Paraná; Paulino, Mário Fonseca; Universidade Federal de Viçosa; Marcondes, Marcos Inácio; Universidade Federal de Viçosa; Dias, Isabela Fernanda Teixeira; Universidade Federal de Viçosa.
Data: | 2014-05-08
Ano: | 2014
Palavras-chave: | 5.04.03.00-1 associative effects; Beef cattle; Calf; Grazing; Multiple supplement; Production.
Resumo: | 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 Nellorecalves (132.5 ± 5.5 kgand 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 &amp;lt; 0.05) intake of ME (9.8 Mcal day-1) with no difference (p &amp;gt; 0.05) between supplemented bulls (13 Mcal day-1). Although non-supplemented bulls had less (p &amp;lt; 0.05) retained protein, retained energy (RE), body weight gain and dressing percentage, differences were not observed (p &amp;gt; 0.05) between supplemented bulls. High-carbohydrate supplements were associated with more (p &amp;lt; 0.05) RE (596.2 Mcal) than low-carbohydrate supplements (515.5 Mcal). Differences were not found (p &amp;gt; 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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês

Identificador:

http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/21345

10.4025/actascianimsci.v36i2.21345

Editor: | Editora da Universidade Estadual de Maringá
Relação: | http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/21345/pdf_31
Formato: | application/pdf

Fonte:

Acta Scientiarum. Animal Sciences; v. 36, n. 2 (2014); 215-224

Acta Scientiarum. Animal Sciences; v. 36, n. 2 (2014); 215-224

1807-8672

1806-2636

Fonte:

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