<P> As of 2011, Grandin claimed to have designed over 54% of the slaughterhouses in the United States as well as many others around the world . </P> <P> By 2010 a mobile facility the Modular Harvest System had received USDA approval . It can be moved from ranch to ranch . It consists of three trailers, one for slaughtering, one for consumable body parts and one for other body parts . Preparation of individual cuts is done at a butchery or other meat preparation facility . </P> <P> The standards and regulations governing slaughterhouses vary considerably around the world . In many countries the slaughter of animals is regulated by custom and tradition rather than by law . In the non-Western world, including the Arab world, the Indian sub-continent, etc., both forms of meat are available: one which is produced in modern mechanized slaughterhouses, and the other from local butcher shops . </P> <P> In some communities animal slaughter and permitted species may be controlled by religious laws, most notably halal for Muslims and kashrut for Jewish communities . This can cause conflicts with national regulations when a slaughterhouse adhering to the rules of religious preparation is located in some Western countries . In Jewish law, captive bolts and other methods of pre-slaughter paralysis are generally not permissible, due to it being forbidden for an animal to be stunned prior to slaughter . Various halal food authorities have more recently permitted the use of a recently developed fail - safe system of head - only stunning where the shock is non-fatal, and where it is possible to reverse the procedure and revive the animal after the shock . The use of electronarcosis and other methods of dulling the sensing has been approved by the Egyptian Fatwa Committee . This allows these entities to continue their religious techniques while keeping accordance to the national regulations . </P>

How many cattle are slaughtered per hour in a large slaughter operation