National standards for nutrient contents in manure

Transcription

1 National standards for nutrient contents in manure Germany Maximilian Hofmeier Julius Kühn-Institut, Braunschweig

2 Background Nutrient excretions of farm animals determine the fertilization value of animal manure affect the application rate of animal manure Exact knowlege of nutrients from farm animals is crucial for. the optimization of the fertilizer planning the calculation of nutrient balances National standards for nutrient excretion of farm animals are reported in the annex to the Fertilizer Application Ordinance and in the fertilizer recommendations of the Federal State Authorities... obtained from Arbeiten der DLG, Band 199

3 Methodology Mass balance approach Feed nutrient intake Nutrient excretion Nutrient retention by animal or animal products

4 Methodology Mass balance approach Feedstuff A, kg * nutrient content (N = raw protein : 6.25, P, K) + Feedstuff B, kg * nutrient content (N = raw protein : 6.25, P, K) = Feed nutrient intake (N, P, K) - Mass increase, kg * nutrient content (N = raw protein : 6.25, P, K) - Milk, kg * nutrient content (N = raw protein : 6.25, P, K) - Eggs, kg * nutrient content (N = raw protein : 6.25, P, K) - Wool, kg * nutrient content (N = raw protein : 6.25, P, K) = Nutrient excretion with faeces and urine (N, P, K)

5 Methodology Preconditions and assumptions Preconditions and assumptions for balance calculations Production methods based on good agricultural practice Standard values for nutrient contents in animals and animal products Standard values for nutrient contents in fodder

6 Methodology Categories Animal groups Category Sub-categories Cattle Pigs Poultry Sheep & Goats Other livestock Dairy Farming Cattle fattening Suckler cow husbandry Calf fattening calf rearing - heifers rearing - dairy production rose veal production - feeder rearing - calf fattening Sow keeping piglet production - specialized piglet raising - gilt breeding - gilt integration - boar keeping - pig fattening Egg production Poultry farming Lamb production Goat milk production Horse keeping Rabbit keeping Reserve game pullet breeding - laying hens broilers - turkey farming - duck farming - geese farming riding horses - riding ponies - breeding mare - rearing horses

7 Cattle - Dairy farming Sub- category Production method Nutrient excretion in kg N P K Calf rearing (younger than 16 wks, 80 kg gain per calf) per stable place and year Heifers rearing (calving age 27 month, 580 kg gain per heifer) per livestock unit grassland farm conventional extensive mixed farm with pasture animal housing Dairy production (output related to 4% fat and 3.4% protein plus 0.9 calves) per stable place and year grassland farm kg ECM kg ECM kg ECM mixed farm kg ECM kg ECM kg ECM mixed farm (without pasture) kg ECM kg ECM kg ECM

8 Mass balance Dairy production Production method grassland farm mixed farm Efficiency kg ECM kg ECM Feed expenses: (per cow and year) - grass t DM grass silage " maize silage " straw " soybean meal t wheat " MLF (18/3) " MLF (16/3) " minerals " Mass balance: kg/cow and year Nutrient N P K N P K - input output (product) Standard excretion

9 Poultry - Egg production and poultry farming Sub-category Pullet breeding Laying hens Broilers Turkey farming Production method Nutrient excretion in g N P K per stable place and year 3.3 kg gain/animal; standard diet, 4 phases /5 phase feeding N-/P- reduced, 5 phases per stable place and year 17.6 kg egg mass standard diet N-/P- reduced per stable place and year mast > 40 days; standard diet kg gain/animal N-/P- reduced mast days; standard diet kg gain/animal mast < 37 days; 1.7 kg gain/animal Increment 20.4 kg; duration 22 wks; consumption 56.8 kg Increment 10.9 kg; duration 17 wks; consumption 27.9 kg N-/P- reduced standard diet N-/P- reduced per animal standard diet N-/P- reduced (partly) P-reduced standard diet N-/P- reduced (partly) P-reduced

10 Mass balance Broilers Production method standard diet N-/P- reduced Efficiency 2.2 kg gain/animal; 14.2 kg gain per stable place and year Feed expenses (kg/animal): - starter mast final mast Mass balance: g/stable place and year Nutrient N P K N P K - input output (product) Standard excretion

11 Summary Background Annex of Fertilizer Application Ordinance Published in Arbeiten der DLG, Band 199 Methodology National standards for nutrient contents in manure are calculated via the mass balance approach Differentiated into production methods Production based on good agricultural practice Standard values for nutrient contents in animals and animal products Standard values for nutrient contents in fodder