PMID: 12162668Aug 7, 2002

Effects of bacterial direct-fed microbials on ruminal fermentation, blood variables, and the microbial populations of feedlot cattle

Journal of Animal Science
G R GhorbaniJ A Z Leedle

Abstract

A study was conducted to determine whether bacterial direct-fed microbials (DFM) could be used to minimize the risk of acidosis in feedlot cattle receiving high concentrate diets. Six ruminally cannulated steers, previously adapted to a high concentrate diet, were used in a double 3 x 3 Latin square to study the effects of DFM on feed intake, ruminal pH, and ruminal and blood characteristics. Steers were provided ad libitum access to a diet containing steam-rolled barley, barley silage, and a protein-mineral supplement at 87, 9, and 4% (DM basis), respectively. Treatments were as follows: control, Propionibacterium P15 (P15), and Propionibacterium P15 and Enterococcus faecium EF212 (PE). The bacterial treatments (10(9) cfu/g) plus whey powder carrier, or whey powder alone for control, were top-dressed once daily at the time of feeding (10 g/[steer/d]). Periods consisted of 2 wk of adaptation and 1 wk of measurements. Ruminal pH was continuously measured for 6 d using indwelling electrodes. Dry matter intake and ruminal pH (mean, minimum, hours, and area pH < 5.8 or < 5.5) were not affected by treatment (P > 0.05). However, supplementation with P15 increased protozoal numbers (P < 0.05) with a concomitant increase in ruminal NH3...Continue Reading

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Citations

Jul 1, 2005·The Journal of Nutrition·Julia B EwaschukGordon A Zello
Jan 26, 2008·Journal of Dairy Science·W P WeissT R McKelvey
Oct 14, 2008·Journal of Animal Science·N C WhitleyS Parveen
Oct 4, 2012·Animal : an International Journal of Animal Bioscience·D P MorgaviGraeme Attwood
Oct 4, 2012·Animal : an International Journal of Animal Bioscience·Peng SunL F Deng
Sep 27, 2013·World Journal of Microbiology & Biotechnology·Wenjie HuoShengyong Mao
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May 23, 2007·Journal of Dairy Science·T G Nagaraja, E C Titgemeyer
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Oct 22, 2019·Frontiers in Microbiology·Natasha DoyleSinead Leahy
May 26, 2015·Microbes and Environments·Yutaka UyenoTakeshi Shimosato
Jul 24, 2019·Journal of Animal Science and Technology·Mahfuzul Islam, Sang-Suk Lee
May 1, 2020·Foodborne Pathogens and Disease·Paul R BroadwayP Whitney Rounds
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Aug 19, 2015·Animal Science Journal = Nihon Chikusan Gakkaihō·Shigeru Sato
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Sep 27, 2008·Pakistan Journal of Biological Sciences : PJBS·M RaminN Abdullah
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Related Concepts

Metabolic Acidosis
Adaptation, Physiological
Animal Feed (Substance)
Blood Gas Analysis
Energy Intake
Bos indicus
Cattle Diseases
Fermentation
Hydrogen-Ion Concentration
Propionibacterium

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