Complex sentence: The USDA also claims that testing does not ensure food safety because the disease is difficult to detect in younger animals.The USDA's objection is believed to be the result of pressure from larger meatpacking operations.
Split into simpler sentences: The USDA also claims that testing does not ensure food safety because the disease is difficult to detect in younger animals. An alternative position is that the USDA's objection is the result of pressure from larger meatpacking operations.