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Feed quality and feeding level effects on faecal composition in east African cattle farming systems

Ali, A. I. M.; Wassie, S. E.; Joergensen, R. G.; Korir, D.; Goopy, J. P.; Butterbach-Bahl, K. 1,2; Merbold, L.; Dickhoefer, U.; Schlecht, E.
1 Institut für Meteorologie und Klimaforschung – Atmosphärische Umweltforschung (IMK-IFU), Karlsruher Institut für Technologie (KIT)
2 Institut für Meteorologie und Klimaforschung (IMK), Karlsruher Institut für Technologie (KIT)


Effects of feeding levels below maintenance requirements of metabolizable energy (MER) and of feed supplementation on fecal nutrient and microbial C concentrations were evaluated. In experiment 1, Rhodes grass hay only was offered to Boran steers at 80%, 60%, and 40% of individual MER, while steers at 100% MER additionally received a concentrated mixture. This reduction in MER decreased N, increased fungal C but did not affect bacterial C concentrations in feces. In experiment 2, Holstein × Boran heifers were offered a poor-quality roughage diet without supplement, with sweet potato vine silage or with a urea-molasses block. These two supplements did not affect the fecal chemical composition or fungal C but increased bacterial C concentrations in feces. Across all data, the fungal C/bacterial C ratio was positively related to N and negatively to neutral detergent fiber concentrations in feces, indicating diet-induced shifts in the fecal microbial community.

Verlagsausgabe §
DOI: 10.5445/IR/1000130323
Veröffentlicht am 10.03.2021
DOI: 10.3390/ani11020564
Zitationen: 6
Web of Science
Zitationen: 10
Zitationen: 7
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung – Atmosphärische Umweltforschung (IMK-IFU)
Universität Karlsruhe (TH) – Interfakultative Einrichtungen (Interfakultative Einrichtungen)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 2076-2615
KITopen-ID: 1000130323
HGF-Programm 12.11.22 (POF IV, LK 01) Managed ecosystems as sources and sinks of GHGs
Erschienen in Animals
Verlag MDPI
Band 11
Heft 2
Seiten 1-12
Schlagwörter sub-Saharan Africa; Boran cattle; diet composition; fecal excretion; feed intake; manure quality; nutrient cycling
Nachgewiesen in Web of Science
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