Whether putting food in the refrigerator, the freezer, or the cupboard, you have plenty of opportunities to prevent foodborne illnesses. One of the basics of food safety is cooking food to its proper temperature.
Re: Average hay consumption. A cow needs about 3 per cert of its body weight in roughage a day, a 1000 lb cow needs 30 lbs of hay if it has no other source of roughage.
Survey data shows that average sow feed intake during lactation is only 11.5lb per day (range 8-15lb per day for the bottom and top 10 % of producers, Aherne 2000). Some of the feed intake differences among farms may be explained by differences in genotype, lactation length, parity distribution, disease levels etc., but much of the difference is still due to feeding management.