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CABI Book Chapter

Avian gut function in health and disease.

Book cover for Avian gut function in health and disease.


This book contains conference proceedings of the 28th Poultry Science Symposium of the World's Poultry Science Association held in Bristol, UK, in September 2005. It focuses on the discontinued use of antibiotics in poultry and on the interactions between the birds, dietary factors and pathogens. The 23 chapters include the history, current use and legislative aspects of feed additives in the Euro...


Chapter 1 (Page no: 3)

History and current use of feed additives in the European Union: legislative and practical aspects.

Whilst the term feed additives encompasses a variety of products, this chapter will concentrate on product groups such as antibiotic growth promoters, coccidiostats and enzymes. These products have been, and are, subject to scrutiny and licensing at European Union (EU) and national level. The history of antibiotic growth promoters serves as a case study for the development of a product group, ensuing legislation, pressure group activity and the subsequent demise of the product group. EU legislation has evolved over the years from a situation of limited scope and relatively relaxed rules to the current system where the scope is being extended to more products and with stricter rules. The current EU regulation (1831/2003) is based on the precautionary principle related to human health, animal health and the environment. At present there are signs that legislation has tightened to such a level that certain products are not available on the EU market, maybe as a result of high costs or delays, due to the registration process. A balance needs to be found between effective legislation regulating the safe use of additives and allowing new product and concept development. From a practical nutritionist's point of view the whole area is very complicated, with several products on the market, and it is unclear whether they are additives in the legal sense or not, but there is a responsibility on the nutritionist to ensure compliance with the law. With antibiotic growth promoters disappearing, several 'replacement' products need to be evaluated, which is another big challenge for nutritionists.

Other chapters from this book

Chapter: 2 (Page no: 13) Poultry nutrition without pronutrient antibiotics. Author(s): Rosen, G. D.
Chapter: 3 (Page no: 29) Early development of small intestinal function. Author(s): Uni, Z.
Chapter: 4 (Page no: 43) Absorptive function of the small intestine: adaptations meeting demand. Author(s): Mitchell, M. A. Moretó, M.
Chapter: 5 (Page no: 65) Epithelial structure and function in the hen lower intestine. Author(s): Laverty, G. Elbrønd, V. S. Árnason, S.S. Skadhauge, E.
Chapter: 6 (Page no: 85) Immunological development of the avian gut. Author(s): Beal, R. K. Powers, C. Davison, T. F. Smith, A. L.
Chapter: 7 (Page no: 107) Molecular approaches to the analysis of gastrointestinal microbial ecosystems. Author(s): Flint, H. J. Leitch, E. C. M. Duncan, S. H. Walker, A. W. Patterson, A. J. Rincon, M. T. Scott, K. P. Louis, P.
Chapter: 8 (Page no: 124) Microbes of the chicken gastrointestinal tract. Author(s): Apajalahti, J. Kettunen, A.
Chapter: 9 (Page no: 138) Mechanisms of pathogen control in the avian gastrointestinal tract. Author(s): Donoghue, A. M. Farnell, M. B. Cole, K. Donoghue, D. J.
Chapter: 10 (Page no: 159) Effect of non-starch polysaccharidases on avian gastrointestinal function. Author(s): Bedford, M. R.
Chapter: 11 (Page no: 171) Effects of amino acid and protein supply on nutrition and health. Author(s): Kidd, M. T. Corzo, A.
Chapter: 12 (Page no: 183) The role of feed processing on gastrointestinal function and health in poultry. Author(s): Svihus, B.
Chapter: 13 (Page no: 195) Wet litter: its causes and prevention and the role of nutrition. Author(s): Collett, S. R.
Chapter: 14 (Page no: 210) Micronutrient supply: influence on gut health and immunity. Author(s): Klasing, K. C.
Chapter: 15 (Page no: 227) Virally induced gastrointestinal diseases of chickens and turkeys. Author(s): Guy, J. S.
Chapter: 16 (Page no: 244) The gastrointestinal tract as a port of entry for bacterial infections in poultry. Author(s): Christensen, J. P. Chadfield, M. S. Olsen, J. E. Bisgaard, M.
Chapter: 17 (Page no: 259) Parasite genetics, protection and antigen identification. Author(s): Blake, D. P. Shirley, M. W. Smith, A. L.
Chapter: 18 (Page no: 275) Developments and pitfalls of feed acidification in controlling gut pathogens in poultry, with emphasis on Salmonella. Author(s): Immerseel, F. van Gantois, I. Bohez, L. Timbermont, L. Boyen, F. Hautefort, I. Hinton, J. C. D. Pasmans, F. Haesebrouck, F. Ducatelle, R.
Chapter: 19 (Page no: 294) Competitive exclusion in poultry production. Author(s): Schneitz, C.
Chapter: 20 (Page no: 311) Campylobacters and their bacteriophage in poultry. Author(s): Connerton, P. L. Connerton, I. F.
Chapter: 21 (Page no: 322) Breeding for disease resistance. Author(s): Bishop, S. C.
Chapter: 22 (Page no: 341) The EU perspective on the monitoring of zoonoses and zoonotic agents. Author(s): Idei, S.
Chapter: 23 (Page no: 350) Gastrointestinal problems: the field experience and what it means to the poultry farmer. Author(s): Lister, S. A.

Chapter details

  • Author Affiliation
  • ABNA Ltd., ABNA House, Oundle Road, Peterborough, PE2 9PW, UK.
  • Year of Publication
  • 2006
  • ISBN
  • 9781845931803
  • Record Number
  • 20073020066