polled polled breed sheep developed meat refers fact variation breed polled result genetic offspring certain ram grew horns years breeding work strain developed lost characteristic horns bred true polled white medium sized sheep prolific able breed season muscular good adults produce thick free dark fibers development number registered united_states grown exceed number horns sheep easier handle risk hurting polled confused australian poll breed start genetic resulted introduction blood breeding program history farm north_carolina years normal breeding program farm bred eventually gave birth twin regular brother born polled horns genetic polled born official given true polled sheep named accordance naming system started breeding program research testing confirm polled carried characteristics able pass traits formed registered polled sheep livestock scientists late late credited identifying developing sheep offspring bought breeders years seventy percent registered polled success polled considered second popular sheep breed united_states polled strain developed australia 1900s result genetic resulted introduction blood polled medium sized sheep long lived prolific heavy produce hardy moderate growth maturity yield heavily white strong close free dark fiber extends legs averages pounds seventy percent staple length ranges inches count fiber diameter ranges maturity weigh pounds weighing condition mature range weight pounds noted ability bred year commonly produce females season breeding breeds characteristic multiple common work commercial operations including programs specifically slaughter known terminal suitable slaughter breeding purposes breed commercial spread canada major contributor commercial lamb industry breed confinement readily accelerated programs polled thrive grass based conditions suitable small farms intensely managed polled versus ancient breed likely developed sheep lived valleys southwestern england sheep imported united_states national flock book formed today found varieties globally polled horn variety horns polled variety horns polled ideal commercial settings horns caught fencing cause damage butt polled popular white faced breed north_america common listed threatened united_states essence difference breeds horns
Polled Dorset