General Information:
| Swine | Southdown Sheep | Shorthorn Cattle | Border Collies | |
| Heat Cycle | 21 days
( 16 to 24 days ) |
16 1/2 days
( 14 to 20 days ) |
21 days
( 18 to 24 days ) |
3 1/2 to 13 months
usually every 6 month |
| Gestation | 112 to 115 days, or
3 mo., 3 wks, 3 days |
144 to 147 days, or
5 months |
282 days, or
9 months |
58 to 70 days, or
2 months |
| Age at Puberty | 4 to 9 months
usually bred at 7 months |
7 to 12 months
should not be bred under 9 months of age |
4 to 18 months with 12 months most common
usually first bred at 15 months |
6 to 24 months
should not be mated before 1 1/2 years of age unless you know the bloodlines and are in the dog breeding business, then you should have your dog spayed or neutered |
Links:
Rare Breeds Canada www.rarebreedscanada.org
