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The effect of protozoa on the bacterial composition and hydrolytic activity of the roe deer rumen.

Miltko, Renata; Kowalik, Barbara; Majewska, Małgorzata P.; Kędzierska, Aneta; McEwan, Neil R.; Bełżecki, Grzegorz

Authors

Renata Miltko

Barbara Kowalik

Małgorzata P. Majewska

Aneta Kędzierska

Neil R. McEwan

Grzegorz Bełżecki



Abstract

© 2020 by the authors. Licensee MDPI, Basel, Switzerland. The purpose of this study was to compare the effect of the presence of protozoa in the rumen of wild roe deer (Capreolus capreolus) on the bacteria composition and digestion rate of the main carbohydrates of forage. The research material involved rumen content and rumen fluid, which were collected in the autumn-winter season, from eight adult males of roe deer with an average body mass of 22.6 kg. The microscopic analysis demonstrated that there were only protozoa in 50% of the animals sampled. Qualitative analysis revealed the presence of protozoa belonging to the genus Entodinium. The density of protozoal population varied from 6.5 to 38.7 × 105/mL rumen fluid. The analysis of bacteria composition indicated that protozoa did not have an effect on bacterial diversity. Furthermore, the results of hydrolytic activity revealed that the fastest digestion of carbohydrates was for pectin, while the slowest was inulin. The pH and redox potential in the rumen varied from 5.9 to 6.1 and from −248.1 to −251.1 mV, respectively. In summary, the presence of protozoa in the rumen of wild roe deer does not have an effect on the bacterial population and has no effect on the digestion rate of carbohydrates in the rumen.

Citation

MILTKO, R., KOWALIK, B., MAJEWSKA, M.P., KĘDZIERSKA, A., MCEWAN, N.R. and BEŁŻECKI, G. 2020. The effect of protozoa on the bacterial composition and hydrolytic activity of the roe deer rumen. Animals [online], 10(3), article ID 467. Available from: https://doi.org/10.3390/ani10030467

Journal Article Type Article
Acceptance Date Mar 6, 2020
Online Publication Date Mar 11, 2020
Publication Date Mar 31, 2020
Deposit Date Mar 12, 2020
Publicly Available Date Mar 12, 2020
Journal Animals
Electronic ISSN 2076-2615
Publisher MDPI
Peer Reviewed Peer Reviewed
Volume 10
Issue 3
Article Number 467
DOI https://doi.org/10.3390/ani10030467
Keywords Bacteria; Digestion; Protozoa; Rumen; Wild roe deer
Public URL https://rgu-repository.worktribe.com/output/877453

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