Application of Phase Feeding in Swine Production

Abstract

Han, In K., Lee, J.H., Kim, J.H., Kim, Y.G., Kim, J.D. and Paik, I.K. 2000. Application of phase feeding in swine production. J. Appl. Anim. Res., 17: 27–56.

Phase feeding is a term used to describe the feeding of several diets for a relatively short period of time in order to closely meet the pigs ‘nutrient requirements. With current feeding strategy, it is not likely to meet the animals’ nutrients requirement which rapidly changes according to their age. By phase feeding, the nutrient requirements could be met more closely and it provides a more economical and environmentally sound feeding program for the pig. From numerous research results, pigs reared on phase feeding program seemed to grow as well as pigs reared on conventional feeding program (usually one or two phase feeding in finishing period). However, nutrients excretion could be dramatically reduced with phase feeding program. Reduced amounts of nitrogen and phosphorus were reported by various researchers. To apply phase feeding into practical swine industry, digestibility or availability of ingredients, gender, genetics, growth potential, physiological status of the animals and feed additives should be carefully considered as these factors will affect the growth performance and nutrient utilization of the animals. Phase feeding can be applied more efficiently when producers have computerized feeding system. Thus there might be a need to define appropriate number of phases and proper levels of nutrients supply for pigs of each growth stage.

Key words:

• Phase feeding
• environmental pollution
• nitrogen excretion
• amino acid balance and growing-finishing pigs