| Registro completo |
| Provedor de dados: |
Animal Sciences
|
| País: |
Brazil
|
| Título: |
Replacement of soybean meal by conventional and coated urea in dairy cows: intake, digestibility, production and composition of milk
Replacement of soybean meal by conventional and coated urea in dairy cows: intake, digestibility, production and composition of milk
|
| Autores: |
Gonçalves, Geógenes da Silva; Universidade Estadual do Sudoeste da Bahia
Pedreira, Marcio dos Santos; Universidade Estadual do Sudoeste da Bahia
Azevedo, José Augusto Gomes; Universidade Estadual de Santa Cruz
Del Rei, Antonio Jorge; Universidade Estadual do Sudoeste da Bahia
Silva, Herymá Giovane Oliveira; Universidade Estadual do Sudoeste da Bahia
Silva, Fabiano Ferreira; Universidade Estadual do Sudoeste da Bahia
|
| Data: |
2014-03-18
|
| Ano: |
2014
|
| Palavras-chave: |
Conventional urea
Dry matter intake
Slow-release urea conventional urea
Dry matter intake
Slow-release urea
|
| Resumo: |
http://dx.doi.org/10.1590/actascianimsci.v36i1.21314This study evaluated the effect of dairy cows’ diets containing two different sources of urea on dry matter intake, nutrient apparent digestibility, and milk production and composition. Eight crossbred cows (Holandês x Zebu) were confined and randomly assigned to four sequential diets distributed in two 4 x 4 Latin: SM = soybean meal; SRU 0 = conventional urea (CU) 100%/slow release urea (SRU) 0%; SRU 44 = CU 56%/SRU 44%; SRU 88 = CU 12%/SRU 88%. Experimental periods consisted of 21 days, with total duration of 84 days. Dry matter intake, neutral detergent fiber, organic matter, crude protein, and total digestible nutrients were not affected by experimental diets. Dry matter and neutral detergent fiber digestibility coefficient presented average values of 69.43 and 51.07%, respectively. Average digestibility of crude protein was 65.43%. Average milk production was 9.609 kg. The partial replacement of soybean meal by conventional urea and slow release urea, at 2.1% of the diet dry matter, showed that these sources of urea can be offered without production impairment for dairy cows.
This study evaluated the effect of dairy cows’ diets containing two different sources of urea on dry matter intake, nutrient apparent digestibility, and milk production and composition. Eight crossbred cows (Holandês x Zebu) were confined and randomly assigned to four sequential diets distributed in two 4 x 4 Latin: SM = soybean meal; SRU 0 = conventional urea (CU) 100%/slow release urea (SRU) 0%; SRU 44 = CU 56%/SRU 44%; SRU 88 = CU 12%/SRU 88%. Experimental periods consisted of 21 days, with total duration of 84 days. Dry matter intake, neutral detergent fiber, organic matter, crude protein, and total digestible nutrients were not affected by experimental diets. Dry matter and neutral detergent fiber digestibility coefficient presented average values of 69.43 and 51.07%, respectively. Average digestibility of crude protein was 65.43%. Average milk production was 9.609 kg. The partial replacement of soybean meal by conventional urea and slow release urea, at 2.1% of the diet dry matter, showed that these sources of urea can be offered without production impairment for dairy cows.
|
| Tipo: |
Info:eu-repo/semantics/article
|
| Idioma: |
Inglês
|
| Identificador: |
http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/21314
10.4025/actascianimsci.v36i1.21314
|
| Editor: |
Editora da Universidade Estadual de Maringá
|
| Relação: |
http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/21314/pdf_12
http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/downloadSuppFile/21314/7069
|
| Formato: |
application/pdf
|
| Fonte: |
Acta Scientiarum. Animal Sciences; v. 36, n. 1 (2014); 71-78
Acta Scientiarum. Animal Sciences; v. 36, n. 1 (2014); 71-78
1807-8672
1806-2636
|
| Direitos: |
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).
|
|
