Stock Unit | Number of stock units | Total N excreted by 1 stock unit (kg/year) | Total N excreted by all stock (kg/year) |
1 Dairy Cow (650kg) | | x 116 = | |
1 Dairy Cow (550kg) | | x 96 = | |
1 Dairy Cow (450kg) | | x 76 = | |
1 Dairy heifer replacement over 24 months (500kg) | | x 58 = | |
1 Suckler Cow | | x 58 = | |
1 Cattle grower/fattener over 24 months (500kg) | | x 58 = | |
1 Cattle grower/fattener 12-24 months (400kg) | | x 47 = | |
1 Young cattle 6-12 months | | x 12 = | |
1 Bull beef cattle 6-13.5 months | | x 23 = | |
1 Calf (to 6 months) 1 | | x 7 = | |
1 Bull for breeding (1,350kg, alter figures for breed) | | x 58 = | |
1 Sheep | | x 9 = | |
1 Fattening Lamb 6-12 months 1 | | x 3.2 = | |
1 Fattening Lamb 0-6 months 1 | | x 1.2 = | |
1 Breeding Sow place (includes piglets to 3.5 weeks) | | 19.5 = | |
1 Maiden gilt place 2 | | 3 = | |
1 Boar place | | x 16 = | |
For pigs fattened from 3.5 weeks | | | |
- Number of pigs finished at 7.5 weeks/18kg | | x 0.28 = | |
- Number of pigs finished at 11 weeks/35kg 3 | | x 0.77 = | |
- Number of pigs finished at 20 weeks/85kg 3 | | x 2.5 = | |
- Number of pigs finished at 23 weeks/105kg 3 | | x 3.36 = | |
For pigs fattened from 7.5 weeks: | | | |
- Number of pigs finished at 11 weeks/35kg 3 | | x 0.49 = | |
- Number of pigs finished at 20 weeks/85kg 3 | | x 2.22 = | |
- Number of pigs finished at 23 weeks/105kg 3 | | x 3.08 = | |
1,000 Laying Hens (98% occupancy) | | x 660 = | |
1,000 Broiler Places (76% occupancy) | | x 495 = | |
1,000 Broiler Breeder (77% occupancy) | | x 975 = | |
1,000 Pullets (38% occupancy) | | x 125 = | |
1,000 Male Turkeys Places (140 days) 4 | | x 1,390 = | |
1,000 Female Turkeys Places (120 days) 5 | | x 650 = | |
1,000 Fattening Duck Places (50 days) 6 | | x 900 = | |
| Total N produced F = | |