Direct-Fed Microbials And Prebiotics For Animals - Callaway Todd R. (Curatore); Ricke Steven C. (Curatore) | Libro Springer 12/2011 -

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callaway todd r. (curatore); ricke steven c. (curatore) - direct-fed microbials and prebiotics for animals

Direct-Fed Microbials and Prebiotics for Animals Science and Mechanisms of Action


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Lingua: Inglese


Pubblicazione: 12/2011
Edizione: 2012


I. Overview of Direct-Fed Microbials and Prebiotics and Their Interactions with the Host.- 1. The Commensal Microbiota.- 2. Prebiotics of Plant and Microbial Origin.- 3. Microbial Species Characteristics and Selection.- 4. Genomics of Probiotic-Host Interactions.- 5. The Effects of Pre- and Probiotics on the Host Immune Response.- II. Current and Future Status of Practical Applications and Challenges.- 6. Current Status of Practical Applications: Pets.- 7. Current Perspectives on Probiotics in Poultry Preharvest Food Safety.- 8. Current Status of Practical Applications: Probiotics in Dairy Cattle.- 9. Current Future Status of Practical Applications: Beef Cattle.- 10. Future Challenges of Administration of Direct-Fed Microbial Supplementation to Swine.- 11. Characteristics and Modification of the Intestinal Tract Microbiota of Channel Catfish Ictalurus punctatus.- 12. The Use of Direct-Fed Microbials as a Pre-Harvest Food Safety Intervention in Cattle.


The practice of supplementing direct fed microbial and prebiotic additives to domestic animals during growth is becoming more widespread in food animal production.  Beneficial effects particularly in cattle, pigs and poultry, including improved general health, foodborne pathogen reduction, more efficient food utilization, faster growth rate and increased milk and egg production are common results.  The success associated with direct fed microbial and prebiotic applications in multiple species ensures their continued commercialization and the widespread use of such additives.  However, several fundamental questions remain about how and why probiotic products work, and which kind of probiotic products are best for specific production scenarios.

It appears that early establishment and retention of an ecological balance in the gastrointestinal tract is an important first step for an external biological additive to be effective in young animals.  Therefore, it is possible that the effectiveness of direct fed microbials and prebiotics in some animal species may only be an indirect consequence of speeding up the establishment and succession of the dominant microflora characteristic of the adult gastrointestinal tract. Consequently, an understanding of the key processes during establishment of microflora in the gastrointestinal system that lead to the subsequent fermentation characteristics and ecological balance exhibited by the highly protective microflora is needed.  Several additional areas of future research directions are also suggested for further development and implementation of these biological approaches as new molecular and drug delivery technologies become available.  Continued research on direct fed microbials and prebiotics in general should markedly expand their commercial applications.


Dr. Todd R. Callaway received his B.S. Agriculture degree in Animal Health and Animal and Dairy Sciences, as well as his M.S. in Animal and Dairy Sciences from the University of Georgia.  He received his Ph.D. in Microbiology from Cornell University, with minors in Biochemistry and Animal Science.  Dr. Callaway is a Research Microbiologist for the Agricultural Research Service of the U.S. Department of Agriculture, and has served as a Science Fellow for the Foreign Agriculture Service and the U.S. State Department.  He has adjunct faculty appointments in the Department of Agriculture at Angelo State University, the Animal and Dairy Sciences Department at Mississippi State University, and the Department of Animal Science at Texas A&M University. Dr. Callaway has a research program focused on manipulating the microbial ecology of the animal gastrointestinal tract to reduce populations of foodborne pathogenic bacteria in food animals before they enter the food chain.


Dr. Steven C. Ricke received his B.S. degree in Animal Science and M.S. degree in Ruminant Nutrition from the University of Illinois and his Ph.D. degree from the University of Wisconsin with a co-major in Animal Science and Bacteriology. He is currently holder of the Donald “Buddy” Wray Endowed Chair in Food Safety and Director of the Center for Food Safety at the University of Arkansas.  He is also a faculty member of the Department of Food Science, the Department of Poultry Science and the Cellular and Molecular Graduate program. Dr. Ricke’s research program is primarily focused on virulence and pathogenic characteristics of foodborne salmonellae.

Altre Informazioni



Condizione: Nuovo
Dimensioni: 235 x 155 mm Ø 500 gr
Formato: Copertina rigida
Illustration Notes:7 farbige Abbildungen, 16 schwarz-weiße Tabellen
Pagine Arabe: 206
Pagine Romane: xiv

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