Effects of increasing dose of live cultures of Lactobacillus acidophilus (Strain NP 51) combined with a single dose of Propionibacterium freudenreichii (Strain NP 24) on performance and carcass characteristics of finishing beef steers1

Vasconcelos, J. T.; Elam, N. A.; Brashears, Mindy M.; Galyean, M. L.

doi:10.2527/jas.2007-0526

Cited by 51 publications

(26 citation statements)

References 5 publications

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“…Apart from G:F, fat cover and saleable meat yield, the present results on the performance and carcass characteristics of steers during the finishing period are similar to those of BurciagaRobles et al (2005) and Elam et al (2003), who reported that feeding a combination of L. acidophilus and P. freudenreichii had no effect on feedlot cattle performance and carcass characteristics. The results are also consistent with observations by Peterson et al (2007) and Vasconcelos et al (2008), who found no differences in final BW or DMI when feedlot cattle were fed L. acidophilus either alone or in combination with P. freudenreichii.…”

Section: Discussionsupporting

confidence: 82%

Impact of a mixed culture of Lactobacillus casei and L. lactis on in vitro ruminal fermentation and the growth of feedlot steers fed barley-based diets

Baah¹,

Wang²,

McAllister³

2009

Can. J. Anim. Sci.

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(1 DM of substrate. Total in vitro volatile fatty acids (VFA) production increased at 6 and 12 h of incubation (PB0.01; linear response) when the backgrounding diet was supplemented with DFM. Dry matter digestibility and VFA production also increased (PB0.05) during a 12-h fermentation of the finishing diet. Steers were randomly allocated to one of four dietary treatments that comprised feeding DFM to provide 0 (control), 4 )10 7 , 8)10 7 or 12 )10 7 CFU kg (1 diet DM. Average daily gain (ADG, kg) and feed efficiency (G:F; kg gain kg(1 DM consumed) of steers improved (P00.002 and 0.001, respectively) as a result of feeding DFM during the backgrounding period, but not during the finishing period. Saleable meat and rib eye area decreased (P 00.038, linear; and P00.041, quadratic) with DFM supplementation. The results indicated that supplementing barley-grain/barley-silage-based feedlot cattle diets with 12 )10 7 CFU of the mixed culture of lactobacilli used in these studies could improve ruminal fermentation, ADG and G:F in backgrounding feedlot steers. However, supplementation during the finishing period may not be warranted in terms of growth performance and carcass characteristics. Differences in the microbial ecology of the intestinal tract as a result of differences in diet composition may account for the varied response between the backgrounding and finishing periods.

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Section: Discussionsupporting

confidence: 82%

Impact of a mixed culture of Lactobacillus casei and L. lactis on in vitro ruminal fermentation and the growth of feedlot steers fed barley-based diets

Baah¹,

Wang²,

McAllister³

2009

Can. J. Anim. Sci.

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“…Colonization of the gastrointestinal tract with E. coli 0157:H7 may have been reduced by DFM-8 and DFM-12 treatments, although pathogen transmission dynamics are influenced by the number of cattle in the pen (20) and would differ between individual and group-penned cattle. Because numerous factors may influence efficacy of DFMs, including stage of production and age of animals (7, The relatively limited impact of DFM-4 compared with the other DFM treatments for control of E. coli 0157:H7 is not surprising because other Lactobacillus-based DFMs have demonstrated marked changes in efficacy over a 1-to 2-log range in dosage (40,43,44). Assuring delivery of precise levels of live microorganisms to all cattle within pens containing hundreds of animals is not without challenges.…”

Section: Survival Ofmentioning

confidence: 98%

“…Young calves stressed after weaning and/or transportation may show an optimal response to DFMs (15). Dosage of live organisms in the DFMs is critical, and efficacy for improving growth performance has varied within a range of 1 or 2 log CFU per head per day (43). As well, efficacy for growth improvement may vary according to the strain of both the organism in the DFM and the pathogen (1).…”

mentioning

confidence: 99%

A Mixture of Lactobacillus casei, Lactobacillus lactis, and Paenibacillus polymyxa Reduces Escherichia coli O157:H7 in Finishing Feedlot Cattle

Stanford

Bach

Baah

et al. 2014

Journal of Food Protection

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A direct-fed microbial (DFM) containing Paenibacillus polymyxa, Lactobacillus casei, and Lactobacillus lactis was fed to cattle (n = 120) to determine impacts on shedding and survival of Escherichia coli O157:H7 in feces. Cattle were individually penned and fed diets containing 0 (control), 4 × 10(7) CFU (DFM-4), 8 × 10(7) CFU (DFM-8), or 1.2 × 10(8) CFU (DFM-12) lactobacilli per kg of dietary dry matter over 84-day fall-winter growing and 140-day spring-summer finishing periods. Fecal grab samples were collected from cattle at 28-day intervals, E. coli O157:H7 was detected by immunomagnetic separation, and isolates were compared by pulsed-field gel electrophoresis. During the growing period, feces negative for E. coli O157 from each dietary treatment were inoculated with 10(5) CFU/g nalidixic acid-resistant E. coli O157:H7 and were incubated at 4 and 22(u) C for 11 weeks. Fecal pH and fecal dry matter were measured on days 0, 1, 3, and 7 and weekly thereafter, with E. coli O157:H7 enumerated through dilution plating. Treatment with DFMs did not affect survival of E. coli O157:H7 in feces or fecal pH (P > 0.05). Only one steer was positive for E. coli O157:H7 during the growing period, but during the finishing period, DFM-8 and DFM-12 reduced the prevalence of E. coli O157:H7 in feces (P < 0.05). Feeding DFMs also reduced the frequency of individual steers shedding E. coli O157:H7 during finishing (P < 0.05), with control steers shedding E. coli O157:H7 up to four times, whereas DFM-12 steers shed E. coli O157:H7 a maximum of twice. Treatment with DFMs influenced pulsed-field gel electrophoresis profiles; steers that were fed DFM-8 and DFM-12 shed more diverse subtypes of E. coli O157:H7 than did control or DFM-4 steers. Because a companion study found linear improvement in performance with increasing dosage of DFMs in the first 28 days of the growing period, targeted use of DFM-12 during this time and for the final 1 or 2 weeks prior to slaughter may optimize performance and reduce E. coli O157:H7 while minimizing feed costs.

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“…Studies conducted by M.M. Brashears and associates have demonstrated health benefits and improved performance by cattle fed NP-51; NP-51 has been demonstrated to reduce Escherichia coli O157 and Salmonella species shedding [16,25]. Currently, NP-51 is used by the dairy and beef industries as a direct-fed microbial.…”

Section: Introductionmentioning

confidence: 99%

Effects of the probiotic Lactobacillus animalis in murine Mycobacterium avium subspecies paratuberculosis infection

et al. 2013

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BackgroundMAP is a suspected zoonotic pathogen and the causative agent of Johne’s Disease in cattle and other ruminant animals. With over $1 billion dollars in loss to the dairy industry due to Johne’s Disease, efforts to eliminate or reduce MAP from cattle are of importance. The purpose of this study was to determine if daily intake of probiotics could eliminate or reduce Johne’s Disease associated symptoms and pathogenesis by MAP. Post infection, animals are often asymptomatic carriers with limited shedding of the pathogen, proving early detection to be difficult. Disease and symptoms often appear 3–4 years after infection with antibiotic treatment proving ineffective. Symptoms include chronic gastrointestinal inflammation leading to severe weight-loss from poor feed and water intake cause a wasting disease. These symptoms are similar to those found in individuals with Crohn’s Disease (CD); MAP has been implicated by not proven to be the causative agent of CD. Probiotics administered to livestock animals, including dairy and beef cattle have demonstrated improvements in cattle performance and health. Our objectives included determining the benefits of Lactobacillus animalis (strain name: NP-51) in MAP infected BALB/c mice by evaluating systemic and gastrointestinal response by the host and gut microbiota. Male and female animals were fed 1×106 CFU/g probiotics in sterile, powdered mouse chow daily and infected with 1 × 107 CFU/ml MAP and compared to controls. Animals were evaluated for 180 days to assess acute and chronic stages of disease, with sample collection from animals every 45 days. MAP concentrations from liver and intestinal tissues were examined using real time-PCR methods and the expression of key inflammatory markers were measured during MAP infection (interferon-gamma [IFN-Υ], Interleukin-1α, IL-12, IL-10, IL-6, and Tumor necrosis factor alpha [TNF-α]).ResultsOur results demonstrate administration of probiotics reduces production of IFN-Υ and IL-6 while increasing TNF-α and IL-17 in chronic disease; healthful immune responses that reduce chronic inflammation associated to MAP infection.ConclusionsWe observed that the immune system’s response in the presence of probiotics to MAP contributes towards host health by influencing the activity of the immune system and gut microbial populations.

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Effects of increasing dose of live cultures of Lactobacillus acidophilus (Strain NP 51) combined with a single dose of Propionibacterium freudenreichii (Strain NP 24) on performance and carcass characteristics of finishing beef steers1

Cited by 51 publications

References 5 publications

Impact of a mixed culture of Lactobacillus casei and L. lactis on in vitro ruminal fermentation and the growth of feedlot steers fed barley-based diets

Impact of a mixed culture of Lactobacillus casei and L. lactis on in vitro ruminal fermentation and the growth of feedlot steers fed barley-based diets

A Mixture of Lactobacillus casei, Lactobacillus lactis, and Paenibacillus polymyxa Reduces Escherichia coli O157:H7 in Finishing Feedlot Cattle

Effects of the probiotic Lactobacillus animalis in murine Mycobacterium avium subspecies paratuberculosis infection

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