Oral administration of Megasphaera elsdenii to Jersey cows during early lactation

Ye, D.; Eastridge, M. L.

doi:10.15232/pas.2017-01668

Cited by 4 publications

(1 citation statement)

References 8 publications

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“…Higher ADG and hot carcass weights were observed by Drouillard et al [ 119 ] in steers dosed orally with 200 mL of M. elsdenii NCIMB 41125 (10 11 cfu mL −1 ) than in steers of the control group. In same way, Ye and Eastridge [ 120 ] observed higher milk and fat yield in dairy cows (>3 lactations) dosed with 200 mL Lactipro ® (1 × 10 8 cfu mL −1 ) compared with those of a control group.…”

Section: Nutritional Importancementioning

confidence: 76%

Megasphaera elsdenii: Its Role in Ruminant Nutrition and Its Potential Industrial Application for Organic Acid Biosynthesis

Cabral,

Weimer

2024

Microorganisms

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The Gram-negative, strictly anaerobic bacterium Megasphaera elsdenii was first isolated from the rumen in 1953 and is common in the mammalian gastrointestinal tract. Its ability to use either lactate or glucose as its major energy sources for growth has been well documented, although it can also ferment amino acids into ammonia and branched-chain fatty acids, which are growth factors for other bacteria. The ruminal abundance of M. elsdenii usually increases in animals fed grain-based diets due to its ability to use lactate (the product of rapid ruminal sugar fermentation), especially at a low ruminal pH (<5.5). M. elsdenii has been proposed as a potential dietary probiotic to prevent ruminal acidosis in feedlot cattle and high-producing dairy cows. However, this bacterium has also been associated with milk fat depression (MFD) in dairy cows, although proving a causative role has remained elusive. This review summarizes the unique physiology of this intriguing bacterium and its functional role in the ruminal community as well as its role in the health and productivity of the host animal. In addition to its effects in the rumen, the ability of M. elsdenii to produce C2–C7 carboxylic acids—potential precursors for industrial fuel and chemical production—is examined.

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Section: Nutritional Importancementioning

confidence: 76%

Megasphaera elsdenii: Its Role in Ruminant Nutrition and Its Potential Industrial Application for Organic Acid Biosynthesis

Cabral,

Weimer

2024

Microorganisms

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Invited review: Rumen modifiers in today's dairy rations

Firkins

Mitchell²

2023

Journal of Dairy Science

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Could probiotics be the panacea alternative to the use of antimicrobials in livestock diets?

Cameron

McAllister

2019

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Probiotics are most frequently derived from the natural microbiota of healthy animals. These bacteria and their metabolic products are viewed as nutritional tools for promoting animal health and productivity, disease prevention and therapy, and food safety in an era defined by increasingly widespread antimicrobial resistance in bacterial pathogens. In contemporary livestock production, antimicrobial usage is indispensable for animal welfare, and employed to enhance growth and feed efficiency. Given the importance of antimicrobials in both human and veterinary medicine, their effective replacement with direct-fed microbials or probiotics could help reduce antimicrobial use, perhaps restoring or extending the usefulness of these precious drugs against serious infections. Thus, probiotic research in livestock is rapidly evolving, aspiring to produce local and systemic health benefits on par with antimicrobials. Although many studies have clearly demonstrated the potential of probiotics to positively affect animal health and inhibit pathogens, experimental evidence suggests that probiotics’ successes are modest, conditional, strain-dependent, and transient. Here, we explore current understanding, trends, and emerging applications of probiotic research and usage in major livestock species, and highlight successes in animal health and performance.

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Oral administration of Megasphaera elsdenii to Jersey cows during early lactation

Cited by 4 publications

References 8 publications

Megasphaera elsdenii: Its Role in Ruminant Nutrition and Its Potential Industrial Application for Organic Acid Biosynthesis

Megasphaera elsdenii: Its Role in Ruminant Nutrition and Its Potential Industrial Application for Organic Acid Biosynthesis

Invited review: Rumen modifiers in today's dairy rations

Could probiotics be the panacea alternative to the use of antimicrobials in livestock diets?

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