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População de protozoários ruminais em novilhos zebuínos alimentados com ou sem volumoso / Population of Protozoa in zebu steers fed with or without bulk
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.
  • Nigri, A. C. A; Universidade Federal de Minas Gerais. Instituto de Ciências Agrárias. Montes Claros. BR
  • Ribeiro, I. C. O; Universidade Federal de Minas Gerais. Instituto de Ciências Agrárias. Montes Claros. BR
  • Vieira, E. A; Universidade Federal de Minas Gerais. Instituto de Ciências Agrárias. Montes Claros. BR
  • Silva, M. L. F; Universidade Estadual do Sudoeste da Bahia. Itapetinga. BR
  • Virgínio-Júnior, G. F; Universidade Federal de Minas Gerais. Instituto de Ciências Agrárias. Montes Claros. BR
  • Abrão, F. O; Instituto Federal Goiano. Ceres. BR
  • Geraseev, L. C; Universidade Federal de Minas Gerais. Instituto de Ciências Agrárias. Montes Claros. BR
  • Duarte, E. R; Universidade Federal de Minas Gerais. Instituto de Ciências Agrárias. Montes Claros. BR
Arq. bras. med. vet. zootec. (Online) ; 69(5): 1339-1345, set.-out. 2017. tab
Article in Portuguese | LILACS, VETINDEX | ID: biblio-879372
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<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.(AU)
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Rumen / Acidosis / Microbiota Limits: Animals Language: Portuguese Journal: Arq. bras. med. vet. zootec. (Online) Year: 2017 Type: Article Institution/Affiliation country: Instituto Federal Goiano/BR / Universidade Estadual do Sudoeste da Bahia/BR / Universidade Federal de Minas Gerais/BR

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Full text: Available Index: LILACS (Americas) Main subject: Rumen / Acidosis / Microbiota Limits: Animals Language: Portuguese Journal: Arq. bras. med. vet. zootec. (Online) Year: 2017 Type: Article Institution/Affiliation country: Instituto Federal Goiano/BR / Universidade Estadual do Sudoeste da Bahia/BR / Universidade Federal de Minas Gerais/BR