A comparison of parameters of the passage of nylon capsules and digesta calculated from faecal excretion data obtained in lactating cows

J. Třináctý, M. Richter, J. Pozdíšek, Z.M. Kowalski and E. Fajmonová
Additional contact information
J. Třináctý: Research Institute for Cattle Breeding, Ltd., Rapotín, Pohořelice Workplace, Czech Republic
M. Richter: Research Institute for Cattle Breeding, Ltd., Rapotín, Pohořelice Workplace, Czech Republic
J. Pozdíšek: Research Institute for Cattle Breeding, Ltd., Rapotín, Pohořelice Workplace, Czech Republic
Z.M. Kowalski: Department of Animal Nutrition, Agricultural University of Cracow, Cracow, Poland
E. Fajmonová: Department of Animal Nutrition, Mendel University of Agriculture and Forestry, Brno, Czech Republic

Czech Journal of Animal Science, 2005, vol. 50, issue 10, 450-458

Abstract: The aim of the study was to compare parameters of passage of nylon capsules and digesta represented by Cr-labelled maize silage through the digestive tract of dairy cows. The capsules were made of nylon cloth (42 µm pore size, 10 mm outside diameter) and applied orally. The evaluation was carried out in dairy cows with milk yield of 19.0 kg/day. The diet (17.6 kg DM/day) consisted of maize silage, lucerne hay and concentrate. Total mean retention time (TMRT), delay time (τ), summarised compartmental mean retention time (CMRTS), and mean individual compartmental retention times (CMRT1 and CMRT2) were calculated. TMRT, τ, CMRTS, CMRT1 and CMRT2 values of nylon capsules and Cr-labelled silage were 36.2 and 45.4 h (P < 0.01), 16.2 and 8.3 h (P < 0.01), 20.1 and 37.2 h (P < 0.01), 7.8 and 8.5 h, 12.2 and 28.7 h (P < 0.05), respectively. The calculated mean retention time of nylon capsules in the reticulo-rumen (CMRTS) was shorter and in the intestines (τ) was longer than that of digesta. For this reason the estimation of digestibility using the nylon capsule method can be questionable.

Keywords: nylon capsule; Cr-labelled silage; rate of passage; dairy cow (search for similar items in EconPapers)
Date: 2005
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://cjas.agriculturejournals.cz/doi/10.17221/4241-CJAS.html (text/html)
http://cjas.agriculturejournals.cz/doi/10.17221/4241-CJAS.pdf (application/pdf)
free of charge

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlcjs:v:50:y:2005:i:10:id:4241-cjas

DOI: 10.17221/4241-CJAS

Access Statistics for this article

Czech Journal of Animal Science is currently edited by Bc. Michaela Polcarová

More articles in Czech Journal of Animal Science from Czech Academy of Agricultural Sciences
Bibliographic data for series maintained by Ivo Andrle ().