World Wide Sires recommends the following web sites
- Aberekin
- ADSA American Dairy Science Association
- Accelerated Genetics
- American Jersey Cattle Association
- American Milking Shorthorn Society
- American Guernsey Association
- ANAFI (Italian Holstein Association)
- Ayrshire Breeders Association
- Babcock Institute
- Brown Swiss Cattle Breeders Association
- CALF REARING
- Crazy Cow
- Dairy Business Communication
- Dairy Herd Management
- Dairy Library
- Dairy Strategies
- Dr. Mel DeJarnette, Reproduction Specialist for Select Sires
- Jersey Australia
- Hoard's Dairyman
- Holstein Central
- Holstein International Magazine
- Holstein UK
- Holstein USA
- Holstein World
- Kansas State University
- Masterrind
- NAAB (National Association of Animal Breeders)
- National Mastitis Council
- Penn State Website: Nutrition
- Penn State Website: Reproduction
- Penn State University
- PortaSCC®
- Progressive Dairyman Magazine
- Red & White Dairy Cattle Association
- Select Sires
- Semenzoo
- The Brown Swiss Cattle Breeders Association of New Zealand Inc.
- University of Illinois at Urbana-Champaign Dairy Net
- University of Kentucky
- University of Wisconsin
- University of Wisconsin Extension
- USDA (U.S. Department of Agriculture)
- USDAAIPL/ARS
- Viking Genetics
- World Dairy Expo
- World Wide Sires BV
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