Seedstock 2-10-12

Seedstock 2-10-12 - Structure of the Seedstock Industry...

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1 U.S. Seedstock Industry AnS 225 Spring 2012 2 Structure of the Seedstock Industry Corporate breeding companies Independent seedstock producers 3 Products of Seedstock Suppliers Genetics - genetic merit of the pigs System - terminal crossbreeding system, specialized lines, etc. Service - recommendations, consultation, records, etc. 4 Independent Seedstock Producers Purebred-based, most have 2+ breeds Herd size varies, multipliers, networks Purebred & F1 boars, F1 & 3-way cross gilts Extensive on-farm testing - individual records STAGES -- National testing program “Show pig” breeders 5 Berkshire One of the oldest breeds (1823 in the U.S.) Imported from England - counties of Berkshire and Wiltshire American Berkshire Association established in 1875 - first swine registry in the world Original Berkshire - reddish or sandy color - crossed with Siamese and Chinese pigs 6 Berkshires, cont. Chester and Delaware counties in PN (near Lancaster County) Dominated market shows in 1940s and 1950s Black with six white points and erect ears Confinement adaptability, aggressive breeders Superior muscle quality Export marketing programs
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2 7 Chester White Early 19th century - Chester County, PA Yorkshire and Lincolnshire breeds from UK, Chester breed in NY Several early associations - combined starting 1911 Solid white with drooping ears Large litters, mothering ability Little use outside of U.S. Good meat quality 8 Duroc First called Duroc-Jersey (Association established in 1883) Started from Jersey Reds of New Jersey, red Durocs of New York Originally from Spain and Portugal, also Guinea coast of Africa Reddish-brown strain of Berks 9 Duroc, cont. Influenced by Danish and Canadian imports Reddish color with drooping ears Fast growth, feed efficiency, rugged, durable Superior muscle quality - intramuscular fat Terminal sire used widely throughout the world 10 Hampshire One of oldest American breeds Boone Co., KY - imported from Hampshire County in England - 1825-1835 From “Old English Breed” from Scotland and Saddleback Association established in 1893 - American Thin Rind Association Black with white belt, erect ears Leanness, carcass desirability 11 Landrace Descendents of Danish Landrace Imported from Denmark by USDA in 1934, others from Norway and Sweden Association established in 1950, known as bacon type hog Solid white with large, floppy ears - long- bodied Mothering ability, survival rate 12 Poland Originated from more different breeds than any other breed of livestock Warren and Butler Counties in Ohio (1800- 1850) Wide swings in popularity Black with six white points and drooping ears Meaty carcasses, large loin eyes
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3 13 Spotted Descended from original Poland China in Ohio Developed in Indiana, association established in 1914
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This note was uploaded on 02/14/2012 for the course ANS 225 taught by Professor Baas during the Spring '08 term at Iowa State.

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Seedstock 2-10-12 - Structure of the Seedstock Industry...

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