Data/hora: 06/06/2024 03:33:14

Provedor de dados: | 45
País: | Brazil
Título: | População de protozoários ruminais em novilhos zebuínos alimentados com ou sem volumoso
Autores: | Nigri,A.C.A.; Ribeiro,I.C.O.; Vieira,E.A.; Silva,M.L.F.; Virgínio-Júnior,G.F; Abrão,F.O.; Geraseev,L.C.; Duarte,E.R.
Data: | 2017-10-01
Ano: | 2017
Palavras-chave: | Ciliados; Microbiota ruminal; Pecuária de corte; Acidose ruminal; Terminação.
Resumo: | ABSTRACT This study aimed to quantify and identify the profile of the rumen protozoa population of beef steers fed with or without roughage. Nellore crossbred steers raised in extensive system on lignified tropical pastures with mineral supplementation and steers confined for 60 days only receiving pelletized concentrate and whole corn kernels were evaluated. After slaughter, rumen fluid was collected and one ml aliquots were diluted in nine ml formaldehyde solution at 10%. The counts of small, medium and large protozoa were held in Sedgewick Rafter chambers and identification of genus was possible after staining lugol and optical microscope with a 40X objective. The concentration of rumen protozoa positively correlated with pH ruminal. Cattle fed without roughage had significantly lower rumen protozoa population (P&lt;0.05). Animals fed roughage had higher occurrence of Dasytrichia genus, Charonina, Entodinum, Diplodinium, Ostracodinium and Epidinium while those fed without bulk, the Buetschilia, Isotricha, Eodinium, Polyplastron, Elyplastron, Metadinium and Enoploplastron were the most frequent genus.
Tipo: | Info:eu-repo/semantics/other
Idioma: | Português
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501339
Editor: | Universidade Federal de Minas Gerais, Escola de Veterinária
Relação: | 10.1590/1678-4162-9009
Formato: | text/html
Fonte: | Arquivo Brasileiro de Medicina Veterinária e Zootecnia  v.69 n.5 2017
Fonte: | info:eu-repo/semantics/openAccess