INDICADORES DE CINÉTICA RUMINAL EM VACAS HOLANDÊS x ZEBU EM LACTAÇÃO
| Autor: | A. G. M. Silva, Norberto Mario Rodriguez, Luiz Januário Magalhães Aroeira, Janaina Januário da Silva, Eloísa de Oliveira Simões Saliba |
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| Rok vydání: | 2011 |
| Předmět: |
liquid phase
General Veterinary medicine.diagnostic_test Chemistry polyethylenoglicol Kinetics lcsh:S outflow rate Liquid phase Zebu lcsh:Agriculture Rumen Animal science Outflow rate Volume (thermodynamics) Spectrophotometry PEG ratio medicine Animal Science and Zoology lcsh:Animal culture Co-EDTA ruminal volume lcsh:SF1-1100 |
| Zdroj: | Ciência Animal Brasileira, Vol 12, Iss 1, Pp 1-7 (2011) |
| ISSN: | 1809-6891 1518-2797 |
| Popis: | The efficiency of polyethylenoglicol (PEG) and Co-EDTA was evaluated on the estimate of the main parameters that characterize the liquid phase’s kinetics of Holstein x Zebu cows’ rumen. Significant differences were not observed (P>0,05) among the markers for estimates of ruminal volume (l), passage rate (l/h), retention time (h), outflow rate (l/h) and recycling rate (cycles/d). However, Co-EDTA was the most suitable marker and presented more stability than PEG did. When the spectrophotometry (Co-EDTA methodology of analysis) became impossible, the marker PEG can be a cheap alternative and it supplies satisfactory results, since, the meticulousness of the turbidimetric technique is respected. KEYWORDS: Co-EDTA, liquid phase, outflow rate, polyethylenoglicol, ruminal volume. |
| Databáze: | OpenAIRE |
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