Manure production
There have been several attempts to quantify feedlot manure production in Saskatchewan (table 1). These studies may be regarded as "extension projects" rather than peer-reviewed academic data. In all cases, mass was estimated by weighing trucks as manure was removed from the feedlot. In all cases, data represents fall manure removal once each year. Both moisture content and manure production in Saskatchewan are greater than that predicted by American references (table 5).
Table 1. Saskatchewan manure production, as-removed, wet-basis, average.
| Source | Animal Weight (kg) |
Moisture Content (%) |
Manure Production (kg head-1 d-1) |
| Feedlot A, PAMI, 2000 | 42.1 | 9.7 | |
| Feedlot B, MA, 2000 | 408 | 51.3 | 16.2 |
| PAMI, 2002 | 454 | 14.2 | |
| Feedlot C, MA, 2006 | 458 | 59.2 | 13.5 |
| Manure Properties, MA, 2013 | 491 | 52.4 | 13.6 |
Nutrient concentration
Far more data is available on nutrient concentration than manure production. Manure removal studies in Saskatchewan provide several values for nutrient concentration, and data is also available from Alberta (table 2).
Table 2. Nutrient concentration of feedlot manure in Saskatchewan and Alberta, average.
| Pen | Manure Production (kg head-1 d-1) | Nitrogen Concentration (kg t-1) | Phosphorus Concentration (kg t-1) | Nitrogen Production (g head-1 d-1) | Phosphorus Production (g head-1 d-1) |
| Feedlot B | 16.2 | 7.3 | 2.2 | 118 | 35 |
| Feedlot C - 1 | 17.0 | 5.4 | 1.9 | 91 | 32 |
| Feedlot C - 2 | 11.8 | 5.1 | 1.7 | 60 | 20 |
| Feedlot C - 3 | 13.9 | 4.4 | 1.0 | 61 | 14 |
| Feedlot C - 4 | 11.1 | 6.6 | 1.4 | 73 | 15 |
| Feedlot D - 1 | 9.2 | 5.9 | 1.5 | 54 | 13 |
| Feedlot D - 2 | 16.7 | 6.6 | 1.1 | 110 | 18 |
| Feedlot D - 3 | 17.1 | 5.1 | 1.2 | 86 | 21 |
| Feedlot D - 4 | 9.6 | 5.3 | 1.1 | 51 | 10 |
| Feedlot E - 1 | 10.1 | 8.4 | 2.1 | 84 | 21 |
| Feedlot E - 2 | 14.1 | 11.1 | 2.6 | 155 | 36 |
| Feedlot E - 3 | 17.7 | 8.5 | 2.1 | 150 | 36 |
| Feedlot E - 4 | 11.6 | 7.0 | 1.7 | 81 | 19 |
| Feedlot F - 1 | 23.7 | 4.5 | 1.3 | 105 | 30 |
| Feedlot F - 2 | 28.2 | 4.9 | 1.1 | 136 | 29 |
| Feedlot F - 3 | 24.0 | 5.6 | 1.6 | 134 | 37 |
| Feedlot F - 4 | 9.6 | 6.6 | 1.3 | 63 | 13 |
| Feedlot G - 1 | 7.9 | 12.7 | 3.6 | 100 | 28 |
| Feedlot G - 2 | 5.5 | 13.1 | 2.7 | 72 | 15 |
| Feedlot G - 3 | 6.7 | 13.6 | 3.5 | 91 | 23 |
| Feedlot G - 4 | 6.2 | 11.1 | 2.2 | 69 | 14 |