Breed |
Developer |
Place |
Year
|
Registry
Admission |
Parent
Breeds |
Colour |
Beltsville
No. 1 |
USDA |
Beltsville,
Maryland |
1935 |
1951 |
·
Landrace
· Poland China |
black
with white markings |
Beltsville
No. 2 |
USDA |
Beltsville,
Maryland |
|
1952 |
·
Danish Yorkshire
· Danish Landrace
· Duroc
· Hampshire |
light
red |
C
P F |
Conner
Prairie Farm |
Noblesville,
Indiana |
1956 |
1964 |
·
San Pierre
· Beltsville No. 1 |
black
and white |
C
P F No. 2 |
Conner
Prairie Farm |
Noblesville,
Indiana |
1959 |
1964 |
·
Yorkshire
· Maryland No. 1
· Beltsville No. 2 |
black
and white |
Maryland
No. 1 |
USDA;
Maryland Agricultural Experiment Station |
Queenstown,
Maryland |
1941 |
1951 |
·
Landrace
· Berkshire |
black
and white spotting |
Minnesota
No. 1 |
Minnesota
Agricultural Experiment Station; USDA |
North
Central Station, Minnesota |
1936 |
1946 |
·
Danish Landrace
· Tamworth |
red |
Minnesota
No. 2 |
Minnesota
Agricultural Experiment Station; USDA |
Rosemount
Experiment Station, Minnesota |
1941 |
1948 |
·
Yorkshire
· Poland China
· San Pierre |
black
and white |
Minnesota
No. 3 |
Minnesota
Agricultural Experiment Station |
Rosemount
Experiment Station, Minnesota |
1940s |
1956 |
·
Gloucester Old Spot
· Welsh/Large White
· C-line Poland
· Beltsville No. 2
· Minnesota No. 1
· Minnesota No. 2
· San Pierre
|
black
and red spotting |
Minnesota
No. 4 |
Minnesota
Agricultural Experiment Station |
Rosemount
Experiment Station, Minnesota |
1940s |
|
|
|
Montana
No. 1 |
USDA;
Montana Agricultural Experiment Station |
Miles
City, Montana |
1936 |
1948 |
·
Landrace
· Hampshire |
black |
Palouse |
Washington
State Experiment Station; Irrigation Experiment Station |
Pullman,
Washington; Prosser, Washington |
1945 |
1956 |
·
Danish Landrace
· Chester White |
white |
San
Pierre |
Gerald
Johnson |
Indiana |
|
1953 |
·
Berkshire
· Chester White |
black
and white |
 |
Sources
Gillespie, J. R. Modern Livestock & Poultry
Production, 2nd ed. USA: Delmar Publishers Inc., 1983.
|