You can eat animal meat without any animals being killed - in other words, you don't need to be vegetarian to prevent animal killings.
Waad ku tirtiri kartaa timaha xayawaanka ka dib marka aad ku maydho adegyo qadhaadh ah; ma jirto baahi loo qabo in laga baqdo: dixiriggu waa dhib aan loo baahnayn xayawaanka;