Data/hora: 08/06/2024 14:29:11

Provedor de dados: 	Acta Scientiarum: Animal Sciences	
País: 	Brazil	
Título: 	Requirement of energy and protein of beef cattle on tropical pasture - doi: 10.4025/actascianimsci.v35i4.21143

Requirement of energy and protein of beef cattle on tropical pasture - doi: 10.4025/actascianimsci.v35i4.21143	
Autores: 	Valente, Eriton Egidio Lisboa; Universidade Estadual do Oeste do Paraná; Paulino, Mário Fonseca; Universidade Federal de Viçosa; Detmann, Edenio; Universidade Federal de Viçosa; Valadares Filho, Sebastião de Campos; Universidade Federal de Viçosa; Cardenas, Javier Enrique Garces; Universidade Federal de Viçosa; Dias, Isabela Fernanda Teixeira; Universidade Federal de Viçosa.	
Data: 	2013-07-12	
Ano: 	2013	
Palavras-chave: 	5.04.03.01-0 grazing; Nellore; Supplementation Beef cattle; Grazing; Nellore; Supplementation.	
Resumo: 	Protein and energy requirements of beef cattle, aged between 4 and 18 months old, on tropical pastures, were estimated. Forty-six Nellore calves (138.3 ± 3.4 kg BW and 90-150 days old), kept on pasture, were distributed in a maintenance group (restricted feeding) or in nutritional plans, receiving a supplements with different amounts of protein and carbohydrate or non-supplemented. The net energy requirement for weight gain (NEg) was obtained by linear regression of logarithm of retained energy as a function of logarithm of empty body weight gain. The net energy requirement for maintenance (NEm) was estimated by the exponential relation between heat production and metabolizable energy intake. Net protein requirement for weight gain (RP) was estimated by multiple linear regression of retained protein in the weight gain of empty body (EBWG) and retained energy. The efficiency of metabolizable energy (ME) used for maintenance and for weight gain was 0.55 and 0.26, respectively. The ME requirement for maintenance was 124 kcal EBW-0.75. RP decreased in proportion to body weight increase. NEg and RP may be obtained by equations: RE (Mcal kg-1) = 0.044 x EBW0.75 x EBWG1.1302 and RP (g day-1) = -31.45 + 229.69 x EBWG – 8.75 x RE, respectively.  	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Português	
Identificador: 	http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/21143

10.4025/actascianimsci.v35i4.21143	
Editor: 	Editora da Universidade Estadual de Maringá	
Relação: 	http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/21143/pdf

http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/21143/pdf_1	
Formato: 	application/pdf

application/pdf	
Fonte: 	Acta Scientiarum. Animal Sciences; v. 35, n. 4 (2013); 417-424

Acta Scientiarum. Animal Sciences; v. 35, n. 4 (2013); 417-424

1807-8672

1806-2636	
Fonte: 	DECLARATION OF ORIGINALITY AND CESSATION OF COPYRIGHTI Declare that current article is original and has not been submitted for publication, in part or in whole, to any other national or international journal. I also declare that once published in the Acta Scientiarum. Animal Sciences, a publication of the Universidade Estadual de Maringá, it will not be submitted by me or by any co-author to any scientific communication mean. In my name and in the name of co-authors, I shall cede the copyright of the above mentioned article to the Universidade Estadual de Maringá and I declare that I know that the non-observance of this norm may make me liable for the penalties contemplated in the Law for the Protection of Authors’ Rights (Act 9609 of the 19th February 1998).

DECLARAÇÃO DE ORIGINALIDADE E CESSÃO DE DIREITOS AUTORAIS Declaro que o presente artigo é original, não tendo sido submetido à publicação em qualquer outro periódico nacional ou internacional, quer seja em parte ou em sua totalidade. Declaro, ainda, que uma vez publicado na revista Acta Scientiarum. Animal Sciences, editada pela Universidade Estadual de Maringá, o mesmo jamais será submetido por mim ou por qualquer um dos demais co-autores a qualquer outro meio de divulgação científica. Através deste instrumento, em meu nome e em nome dos demais co-autores, porventura existentes, cedo os direitos autorais do referido artigo à Universidade Estadual de Maringá e declaro estar ciente de que a não observância deste compromisso submeterá o infrator a sanções e penas previstas na Lei de Proteção de Direitos Autorias (Nº9609, de 19/02/98).