Direct-fed microbes: A tool for improving the utilization of low quality roughages in ruminants

Elghandour, Mona M.Y.; Salem, Abdelfattah Z.M.; Castañeda, José Simón Martínez; Camacho, L.M.; Kholif, Ahmed E.; Vázquez-Chagoyán, Juan Carlos

doi:10.1016/s2095-3119(14)60834-0

Cited by 88 publications

(64 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Moreover, Propionibacterium spp. are dominant in silage and consequently are ingested with the silage, or are used as direct-fed microbials to increase ruminal propionate (Elghandour et al, 2015). Propionate has been shown to improve energetic efficiency, reduce ketosis (Wolin, 1960) and decrease methane (CH4) emissions from dairy cows (Dean et al, 2018a).…”

Section: Amentioning

confidence: 99%

Assessing rumen microbial composition and fibre attachment in dairy cows

Vaidya¹

View full text Add to dashboard Cite

Other natural sources 199 (104-297) Other land sources 185 (99-272) Freshwaters 122 (60-180) Geological (onshore) 40 (30-56) Wild animals 10 (5-15) Termites 9 (3-15) Wildfires 3 (1-5) Permafrost soils (direct) 1 (0-1) Oceanic sources 14 (5-25) Geological (offshore) 12 (5-20) Total anthropogenic sources Agriculture and waste 195 (178-206) Enteric fermentation and manure 106 (97-111) Landfills and waste 59 (52-63) Rice cultivation 30 (24-36) Fossil fuels 121 (114-133) Coal mining 41 (26-50) Gas, oil, and industry 79 (69-88) Biomass and biofuel burning 30 (27-35)

show abstract

Section: Amentioning

confidence: 99%

Assessing rumen microbial composition and fibre attachment in dairy cows

Vaidya¹

View full text Add to dashboard Cite

show abstract

“…This can be generalized for the effect of nanocobalt addition on the fermentation activity. Mao et al (2013) and Elghandour et al (2015) showed that addition of nanocobalt increased ME. They returned their results to the high activities of microbes in the rumen as a result of produced growth factors for microbial growth and activity in the rumen, and to the ability of nanocobalt to provide conducive anaerobic conditions to microbial growth.…”

Section: Fermentation Parametersmentioning

confidence: 99%

Evaluation of Nanocobalt Particles Addition in Ruminant Rations by in Vitro Gas Production

El-Galil

El-Bordeny

2018

Egyptian Journal of Nutrition and Feeds

View full text Add to dashboard Cite

he objectives of this paper are to evaluate the addition of nanocobalt on growth of cellulolytic bacteria, degradability of dry matter, cellulose and hemicellulose regarding In vitro gas production. The different levels of nanocobalt as addition element on fermentation kinetics were 0, 25,50,75,100 and 125 % from requirements of animal in ration as dry matter base. Cellulolytic bacteria had been isolated :Cellulomonas cellulasea, Acetobacter xylinum, Thermonospora fusca, Ruminococcus albus , Bacillus sp., Clostridium cellulovorans and Selenomonas ruminantium. Standard ration (1:1 concentrate :clover hay) was incubated for 48 hours. The results indicated that the values of DMD , Hemi.D and Cellul.D, which nanocobalt addition were higher when levels were 50 and 75% compared control. Total cellulolytic bacteria counts in rumen content were higher (P<0.05) in cobalt 100% (11.30) and nanocobalt 75,100 and 125% (11.73,12.72 and 12.20), respectively, while lower value was in nanocobalt 25% (9.72) compared control (7.58). Results revealed that added nanocobalt affect on growth of cellulolytic bacteria and increase degradability of cellulose. The nanocobalt additives had no effect on ruminal pH but more effect on ruminal ammonia and TVF's values, as well as degradability of cell wall constituents and microbial protein production. The extent of gas production was high in control ration , adding cobalt (100 %) and nanocobalt (50%) than other adding levels. Microbial protein (M P) and efficiency microbial protein (EM P) recorded higher values in all different(25,50,75,100 and 125%) added of nanocobalt compared to control (0%). Gas production degradability after 48 hours incubation hemicellulose of 25% nanocobalt recorded the highest value (2444.69) compared to any adding nanocobalt levels and control, while degradability for cellulose recorded higher values for 50 % nanocobalt compared to other levels and control. It concluded that adding nanocobalt improved gas production, growth of cellulolytic bacteria ,ammonia ,total volatile fatty acids, metabolisable energy and cell wall constituents degradability.

show abstract

“…The main reason for the accumulation of lactic acid in the rumen is feeding on highly fermentable carbohydrates (such as a high grain diet). The available carbohydrates act as stimulation agents for the rapid growth of lactic acid bacteria such as Streptococcus bovis in the rumen (Elghandour et al 2015). These bacteria are usually present as part of the normal rumen micro-flora, but during rapid growth they can produce large quantities of lactic acid which may imbalance the buffering capacity of the rumen, resulting in acidosis in healthy adult cattle (Owens et al 1998;Parrot et al 2001;Nagaraja and Titgemeyer 2007;Hutton et al 2012).…”

Section: Introductionmentioning

confidence: 99%

“…Although these methods can be effective in controlling and preventing ruminal acidosis, there are shortcomings and limitations to their application, such as development of resistant strains of bacteria through the long term use of antibiotics. Therefore the use of direct-fed microbials (DFM) for the treatment of ruminal acidosis has been investigated (Kung and Hession 1995;Martin and Streeter 1995;Nocek et al 2002;Elghandour et al 2015). Several lactobacilli including Lactobacillus acidophilus and Lactobacillus casei, as well as Enterococcus diacetylactis and Bacillus subtilis, are commonly available as DFM products for ruminants.…”

Section: Introductionmentioning

confidence: 99%

In vitro investigation of the effect of dairy propionibacteria on rumen pH, lactic acid and volatile fatty acids

Luo

Ranadheera

King

et al. 2017

Journal of Integrative Agriculture

View full text Add to dashboard Cite

Ruminal acidosis is a prevalent disorder in ruminants such as dairy cows and feedlot beef cattle, caused primarily by the inclusion of a high percentage of readily fermentable concentrates in the diet. The disorder presents as an accumulation of lactic acid, a decrease of pH in the rumen and a subsequent imbalance of the rumen fermentation process with detrimental impacts on the animal's health and productivity. Dairy propionibacteria, a group of bacteria characterised by utilization of lactic acid as the favoured carbon source, with propionic acid produced as a by-product, were evaluated in this study as potential direct-fed microbials for use in controlling ruminal acidosis. Acidosis was simulated by introduction of high concentrations of lactic acid into rumen fluid samples and a multi-strain in vitro analysis was conducted, whereby changes in pH and lactic acid metabolism were compared in identical acidified rumen samples, following inoculation with various propionibacteria. This was followed by a study to evaluate the effect of bacterial inoculation dosage on acid metabolism. The results indicated that lactic acid levels in the rumen fluid were significantly reduced, and propionic acid and acetic acid concentrations both significantly increased, following addition of propionibacteria. Significant 'between strains' differences were observed, with Propionibacterium acidopropionici 341, Propionibacterium freudenreichii CSCC 2207, Propionibacterium jensenii NCFB 572 and P. jensenii 702 each producing more rapid reduction of lactic acid concentration than P. freudenreichii CSCC 2206, P. acidopropionici ATCC 25562 and Propionibacterium thoenii ATCC 4874. Furthermore, the efficacy of this application was dosage related, with the rates of reduction in lactic acid levels and production of propionic acid, both significantly greater for the higher (10 10 cfu mL-1) compared with lower (10 5 cfu mL-1) dosage inoculation. The results confirmed that the introduction of propionibacteria could promote more rapid reduction of lactic acid levels than would occur without their addition, demonstrating their potential in controlling ruminal acidosis.

show abstract

Direct-fed microbes: A tool for improving the utilization of low quality roughages in ruminants

Cited by 88 publications

References 47 publications

Assessing rumen microbial composition and fibre attachment in dairy cows

Assessing rumen microbial composition and fibre attachment in dairy cows

Evaluation of Nanocobalt Particles Addition in Ruminant Rations by in Vitro Gas Production

In vitro investigation of the effect of dairy propionibacteria on rumen pH, lactic acid and volatile fatty acids

Contact Info

Product

Resources

About