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