American Diamond Cattle Ranchers LLC

American Diamond Cattle Ranchers is a Wagyu cattle breeder in Los Angeles, CA, serving Southern California near Long Beach. The ranch maintains herd health through routine veterinary checks, genetic assessments and participation in recognized breed registries.

Calves graze on protected pasture and have access to barn housing, while daily handling fosters calm, adaptable temperaments. Owner Carlos Martinez applies rotational grazing methods and balanced feeding plans, reflecting a focus on resource management and animal welfare. The operation’s emphasis on consistent marbling stems from careful sire selection and ongoing evaluation of growth rates.

Many buyers note the even temperament of the cattle and the reliable quality of each animal. Periodic nutritional analysis of forage and feed helps maintain balanced intake for calves and breeding stock at all life stages. Facilities include covered loafing sheds, salt licks and water stations across paddocks, encouraging natural behaviors and easy access to resources.