ANSC 2340 Lecture Notes - Lecture 2: Alternating Current, Stunning, Thoracic Cavity
21 Oct 2016
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Document Summary
Electrical stunning or carbon dioxide stunning are used in large abattoirs. Electrical stunning uses an alternating current to induce unconsciousness. May be applied with electrodes transversely across the head or. Longitudinally from the head to the back (anterior to posterior) Carbon dioxide is much heavier than air: exsanguination (sticking or bleeding) Puncture wound for pigs is much deeper into the thoracic cavity than for cattle. Otherwise blood enters pleural space forming clots inside the thoracic cavity. Veins have neg pressure and could rapidly contaminate deep meat of the carcass: hair removal. Some abattoirs have a hide puller which pulls off the whole hide. For use in making pigskin leather (for gloves and hush-puppy shoes. Most abattoirs remove the hair but leave the skin on the carcass. Used for the manufacture of food-grade gelatin: evisceration. Viscera removed from posterior to anterior (rear to front) Starting in the abdominal cavity and finishing in the thoracic cavity.
