Determine Feeding Strategies for Reducing P and N Content in Manure
Phosphorus and nitrogen (in the form of protein and amino acids) are both environmental factors and essential nutrients. An adequate supply of phosphorus, protein and amino acids is therefore important in order to ensure production and health of livestock. Hence, a balanced approach taking both the animalsí requirements and the environment into consideration is required so that improvements in the environment do not result in poor health and production in
the farm animals and vice versa.
The Baltic Manure project considers the whole chain from animals and feeding to manure treatment and use to soil status and eutrophication risks. The present report concerns the feeding part and presents the current feeding regimen and nutrient utilization and excretion in dairy cattle, pigs and poultry. Further, the report summarizes feeding methods to be considered in order to improve protein and phosphorus utilization and to reduce the excretion in
intensive animal production. The main conclusions are that the import of feedstuffs like soybean meal (protein rich) and mineral phosphates should
be minimised and substituted by crystalline amino acids respectively phytase in feeds for pigs and poultry. In dairy cattle, feeding strategies like total mixed rations (TMR) that provide the sufficient amounts of nutrients are proposed.
This report was prepared as part of work package 3 on Innovative Technologies for Manure Handling.
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