Generalised Pig Categories as reported by the Agricultural Census.
| Year | Breeding Sows | Piglets (Aged under 5 months) | All Other Pigs |
|---|---|---|---|
| 1940 |
366,302
|
2,025,428
|
763,689
|
| 1950 |
291,441
|
1,202,862
|
601,984
|
| 1960 |
536,009
|
2,855,628
|
747,749
|
| 1961 |
577,804
|
3,026,557
|
758,584
|
| 1970 |
727,612
|
4,465,223
|
974,071
|
| Date: | Source: |
|---|---|
| 1940 - 1970 | Ministry of Agriculture, Agricultural Statistics (HM Stationery Office) , |
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This set of three generalised categories is similar to those used for sheep, but can only be reconstructed for 1940 onwards. By identifying breeding sowes, piglets under 5 months and all other pigs we have approximate measures of the breeding stock and the productivity of that stock.