1979
DOI: 10.2527/jas1979.482381x
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Determination of Rumen Fill, Retention Time and Ruminal Turnover Rates of Ingesta at Different Stages of Lactation in Dairy Cows

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Cited by 205 publications
(79 citation statements)
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“…Similar values for TMRT have been reported with the grab sampling and total faeces collection methods, for both dairy cows (Hartnell and Satter 1979) and sheep (Lindberg 1985).…”
Section: Digesta Passagesupporting
confidence: 80%
“…Similar values for TMRT have been reported with the grab sampling and total faeces collection methods, for both dairy cows (Hartnell and Satter 1979) and sheep (Lindberg 1985).…”
Section: Digesta Passagesupporting
confidence: 80%
“…Para o cálculo do tempo médio de retenção total da digesta (TMRT), utilizou-se a fórmula descrita por Hartnell & Satter (1979): TMRT = (TT + 1/K 1 + 1/K 2 ), em que TT = tempo calculado que o indicador aparece pela primeira vez nas fezes; K 1 = taxa de passagem da digesta pelo rúmen; K 2 = taxa de passagem pós-ruminal ou nos intestinos.…”
Section: Methodsunclassified
“…Longer retention times in cows compared with the hoatzin (72 h vs 44 h, respectively; (Hartnell and Satter, 1979;Grajal, 1991)) are possible due to the larger fermentation chambers that sustain more extensive fiber digestion. A higher relative abundance of Spirochaetes, Verrucomicrobia and Lentisphaerae in the cow rumen is consistent with high cellobiose degradation (Zoetendal et al, 2003;Warnecke et al, 2007).…”
Section: Discussionmentioning
confidence: 99%
“…Fermenting recalcitrant substrates requires longer retention times. Cattle digestive turnover rates can vary from 1-3 days depending on the diet (Hartnell and Satter, 1979).…”
Section: Introductionmentioning
confidence: 99%