Effect of protected urea feeding on ciliated rumen protozoa population of lambs
Twelve male Hampshire Down lambs, average weight 29,37 kg (3,89 kg) and 6 months old, were used in a trial with 4 handlings, using Andropogon grass hay, soy meal and (GPS) at different rates. 18 g of protected urea were added to handlings B and C. Protein levels were given at 100% of NRC requiremen...
| Autores: | , , , , |
|---|---|
| Tipo de documento: | artigo |
| Estado: | Versão publicada |
| Data de publicação: | 2008 |
| País: | Brasil |
| Recursos: | Universidade Estadual de Maringá (UEM) |
| Repositório: | Acta Scientiarum. Animal Sciences (Online) |
| Idioma: | português |
| OAI Identifier: | oai:periodicos.uem.br/ojs:article/3142 |
| Acesso em linha: | https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/3142 |
| Access Level: | Acceso aberto |
| Palavra-chave: | ovinos protozoários ciliados (Ciliphora) rúmen uréia 5.04.00.00-2 Zootecnia |
| Resumo: | Twelve male Hampshire Down lambs, average weight 29,37 kg (3,89 kg) and 6 months old, were used in a trial with 4 handlings, using Andropogon grass hay, soy meal and (GPS) at different rates. 18 g of protected urea were added to handlings B and C. Protein levels were given at 100% of NRC requirements (A and B rations) and at 70% (C and D rations). Ruminal fluid samples were obtained at the last day of the trial, one hour after the feeding of animals. Urea stimulated the division of entodimomorphic ciliates (handlings B and C, p ≤ 0,01). Average values for ciliates were 49,54 and 39.02 x 103 ml-1 respectively for handlings with and without urea. Results show that included quantities of 18 g of protected urea failed to induce metabolic disorder in animals. |
|---|