- Y Diweddaraf sydd Ar Gael (Diwygiedig)
- Gwreiddiol (a wnaed Fel)
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The nitrogen excretion rate for livestock
Unit of livestock category | Production period or Age range | Body Weight kg | Occupancy % of year(1) | Annual Nitrogen Production kg N |
---|---|---|---|---|
(1) For individual farms where occupancy values differ from those given, nitrogen excretion values should be altered accordingly. | ||||
(2) Use the suckler cow data for beef and dairy bulls. | ||||
(3) Maiden gilts, assuming all year round accommodation. | ||||
(4) Sows based on 2.3 lactations, covering 23 per cent of year and dry period 77 per cent of year. Combined output 19.5 kg N/sow/year. | ||||
(5) Broilers, output per 6.6 crops/year, 40 day cycle (73 per cent occupancy). | ||||
(6) Broiler breeder replacements, output/24week cycle. Where there is more than one cycle per year adjust the output figures proportionately. | ||||
(7) Replacement pullets, output per 20 week cycle. Where there is more than one cycle per year adjust the output figures proportionately. | ||||
(8) Turkeys, assuming 2.1 or 2.4 crops per year, for male and female birds respectively. | ||||
Cattle | ||||
Dairy Cow | 575 | 100 | 91 | |
Dairy heifer replacement | >2 years old | 500 | 100 | 54 |
Beef suckler cow(2) | > 2 years old | 500 | 100 | 54 |
Bull beef | 6-13.5 months | 300 | 60 | 23 |
Grower fattener | > 2 years old | 500 | 100 | 54 |
Grower fattener | 12-24 months | 400 | 100 | 47 |
Grower fattener | 6-12 months | 180 | 50 | 12 |
Calf | 0-6 months | 100 | 50 | 7 |
Calf to 12 months | 12 months | 180 | 100 | 19 |
Sheep | ||||
Adult ewe/ram | >1 year old | 50-70 | 100 | 9 |
Lamb | 0-6 months | 4-40 | 50 | 1.2 |
Lamb | 6-12 months | 30-50 | 50 | 3.2 |
Lamb to 1 year | 12 months | 4-50 | 100 | 4.4 |
Pigs | ||||
Maiden gilt(3) | 90-130 | 100 | 13.0 | |
Boar | 130-250 | 100 | 16 | |
1 sow place, includes litter to 7 kg(4) | 12 months | 130-225 | 100 | 19.5 |
Weaner | 3-7.5 weeks | 7-18 | 90 | 3.0 |
Grower, dry meal | 7.5-11 weeks | 18-35 | 90 | 6.1 |
Light cutter, meal fed | 11-20 weeks | 35-85 | 90 | 9.4 |
Baconer, dry meal fed | 11-23 weeks | 35-105 | 90 | 10.5 |
Baconer, liquid fed @ 4:1 | 11-23 weeks | 35-105 | 90 | 10.5 |
Poultry | ||||
1000 Laying hens | 2200 | 98 | 607 | |
1000 Broiler places(5) | 40 days | 2000 | 73 | 255 |
1000 Broiler breeders | 0-60 weeks | 4000 | 91 | 878 |
1000 Broiler breeders (Laying) | 18-60 weeks | 4000 | 87.5 | 945 |
1000 Broiler breeder replacements(6) | 0-18 weeks | 2000 | 46 | 142 |
1000 Replacement pullets(7) | 17 weeks | 1600 | 38 | 113 |
1000 Turkeys (male)(8) | 140 days | 12000 | 80 | 1284 |
1000 Turkeys (female)(8) | 120 days | 8000 | 80 | 871 |
1000 Ducks | 50 days | 3400 | 85 | 834 |
Goat | 9 | |||
Deer (red) | 6mths – 2 years | 13 | ||
Deer (red) | >2 years | 25 | ||
Deer (fallow) | 6mths – 2 years | 7 |
Total nitrogen content of slurry and dirty water on a fresh weight basis
Total nitrogen contained in 1 tonne of solid organic manures
Livestock type | DM content (%) | Total nitrogen (kg) | |
---|---|---|---|
Poultry manure | |||
Broilers | 60 | 30.0 | |
Layers | 30 | 16.0 | |
Turkeys | 60 | 30.0 | |
Ducks | 25 | 6.5 | |
Cattle FYM | 25 | 6.0 | |
Sheep FYM | 25 | 6.0 | |
Pig FYM | 25 | 7.0 |
Annual nitrogen application standards for grassland crops
Year | *Dairy Cattle | *Other Livestock | |
---|---|---|---|
Balance of crop nitrogen requirement (kg N/ha/year) (e.g. from chemical fertiliser or organic nitrogen supply other than livestock manure) | 2007 | 289 | 239 |
2009 | 281 | 231 | |
2010 | 272 | 222 | |
This table does not imply any departure from regulation 9(2) or 10(3) which prohibit the application to the agricultural area on a holding of livestock manure in amounts which exceed 170kg N/ha/year, including that deposited by the animals themselves. | |||
* The Dairy Cattle figures (dairy cows and heifer replacements) apply where it can be demonstrated that more than 50% of the livestock manure applied to the agricultural area, both by land application and by the animals themselves arises from dairy cattle. In all other cases the figures for Other Livestock will apply. |
Livestock manure production figures
Type of livestock | Slurry produced per animal per week (m3)(1) | |
---|---|---|
(1) The standard figures for slurry produced by animals do not include water for cleaning buildings. | ||
Cattle | V | |
Dairy cow | 575kg | 0.37 |
Suckler Cow | 500kg | 0.23 |
Cattle > 2 years | 500kg | 0.23 |
Cattle 1 – 2 years | 400kg | 0.18 |
Cattle 0.5 – 1 year | 180kg | 0.09 |
Calf | 100kg | 0.05 |
Sheep | ||
Adult ewe | 65kg | 0.03 |
Fattening Lamb | 35kg | 0.01 |
Pigs | ||
Gilt | 90 – 130kg | 0.05 |
1 Sow & litter | 130 – 225kg | 0.08 |
1 Weaner (Stage 1) | 7 – 18kg | 0.01 |
1 Grower (Stage 2) | 18 – 35kg | 0.02 |
1 Finisher meal fed (Stage 3) | 35 – 105kg | 0.03 |
1 Finisher liquid fed (Stage 3) | 35 – 105kg | 0.05 |
Poultry | ||
1000 laying hens | 0.81 |
Nitrogen availability in livestock manures and chemical fertilisers
Fertiliser | Availability (%) in year of application | ||
---|---|---|---|
Nitrogen | |||
From 1 Jan 07 | From 1 Jan 09 | From 1 Jan 10 | |
Chemical | 100 | 100 | 100 |
Pig Manure | 35 | 45 | 50 |
Poultry litter | 20 | 24 | 30 |
Farmyard manure | 20 | 25 | 30 |
Cattle and other livestock manure | 30 | 35 | 40 |
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