. Guardar. a herd of cattle grazing on grass in a field. BULL. DESCRIPTION: 5 straws of black Jack 21 - Purebred Beefmaster - Reg#C Semen Stored at Cottage Farms Genetics. She is bred to MBR Playboy. a brown and white cow standing on top of a lush green field. Great genetics. "LA COSTA". en el Ganado Beefmaster”. Mex. C Jacksboro, Texas 󱝍. Asoc. For more information, contact Aaron. "LA COSTA". Más como esto. BEEFMASTER. de Criadores de BLACK JACK. Very docile. 15 months old. Beefmaster Bull Semen Blackjack Guardar. Más como esto. Registered Beefmaster bull ready to go to work. We are excited. BEEFMASTER. Beefmaster Bull Semen Blackjack Guardar. She has given us 2 bull calves but the 1 heifer she has given us was a tremendous Black Jack 21 daughter—Queenie. Guardar.