Intake, rumination, reticulo-rumen fluid and particle kinetics, and faecal particle size in heifers and cattle fed on grass hay and wilted grass silage
| Autor: | G.A. Bangma, Marlou W. Bosch, J. van Bruchem, S.C.W. Lammers-Wienhoven |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 1991 |
| Předmět: |
Animal Nutrition
Silage lignin Particle (ecology) cell wall constituents Biology Rumen Animal science medicine Dry matter Ruminating General Veterinary digestive oral and skin physiology particle pools transit time hemicellulose Diervoeding cellulose Agronomy motility Human and Animal Physiology Rumination Hay Fysiologie van Mens en Dier Animal Science and Zoology Particle size medicine.symptom |
| Zdroj: | Livestock Production Science, 27, 297-308 Livestock Production Science 27 (1991) |
| ISSN: | 0301-6226 |
| Popis: | Grass hay and prewilted grass silage were supplied to heifers and mature cows at restricted and ad libitum level. Neutral detergent fibre (NDF) contents were 64.5 and 448.5% in dry matter of hay and silage, respectively. Voluntary feed intake decreased with increasing cell wall content, but time spent ruminating increased, and so did transit time of digesta in the lower gut and mean faecal particle size. Rumen motility was most intensive after feeding silage. Relative to ad libitum, at a restricted level of feed intake the time spent ruminating per unit of dry matter or the NDF ingested increased, fractional rates of reticulo-rumen emptying of particles did not change, transit in the lower gut slowed down, and faecal particles became smaller. Variation in voluntary feed intake between individual animals could for a significant part he accounted for by NDF content of the diet and time spent ruminating. |
| Databáze: | OpenAIRE |
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