Antimicrobial supplementation alters digestibility and ruminal fermentation in a continuous culture model

Antimicrobial supplementation alters digestibility and ruminal fermentation in a continuous culture model

A dual-flow continuous culture system was used to evaluate the effects of laidlomycin propionate and bacitracin zinc on fermentation, nutrient digestibility, and microbial efficiency. Factors were laidlomycin propionate (LP; 2 mg/L of culture volume) and bacitracin zinc (BAC; 1.4 mg/L), and treatmen...

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Veröffentlicht in:Journal of Applied Animal Research 2021-01, Vol.49 (1), p.23-29
Hauptverfasser: Thompson, Alex J., Smith, Zachary K., Sarturi, Jhones O., Johnson, Bradley J.
Format: Artikel
Sprache:eng
Schlagworte:
Acetic acid
Antibiotics
Antimicrobial agents
Bacitracin
Beef cattle
Continuous culture
Diet
Digestibility
Efficiency
Ethanol
Feeds
Fermentation
Fermenters
Gram-positive bacteria
in vitro
ionophore
laidlomycin propionate
Monensin
pH effects
Propionic acid
Sodium
Supplements
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Zusammenfassung:A dual-flow continuous culture system was used to evaluate the effects of laidlomycin propionate and bacitracin zinc on fermentation, nutrient digestibility, and microbial efficiency. Factors were laidlomycin propionate (LP; 2 mg/L of culture volume) and bacitracin zinc (BAC; 1.4 mg/L), and treatments were as follows: (1) no BAC or LP (CON), (2) LP without BAC (LP), (3) BAC without LP (BAC), and (4) LP and BAC (LP/BAC). A fifth treatment was supplemented with monensin sodium (MON; 6 mg/L) to act as a positive control. Both LP and LP/BAC had significantly greater pH than MON (P 
ISSN:0971-2119
0974-1844
DOI:10.1080/09712119.2021.1876704