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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 (IMK), Karlsruher Institut für Technologie (KIT)
2 Institut für Meteorologie und Klimaforschung – Atmosphärische Umweltforschung (IMK-IFU), Karlsruher Institut für Technologie (KIT)

Abstract:
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
Originalveröffentlichung
DOI: 10.3390/ani11020564
Scopus
Zitationen: 2
Web of Science
Zitationen: 4
Dimensions
Zitationen: 3
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) Biogeochemical modeling of ecosystem-climate interactions
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 Dimensions
Web of Science
Scopus
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