About 60 million, with an interesting geographical distribution. Here are data from the 2002 agricultural census:
http://www.nass.usda.gov/research/2002mapgallery/livestock/hogsandpigs.html
Potbellied pigs typically have 1-2 litters per year, with an average litter size of 4-6 piglets. It is recommended to spay or neuter pet potbellied pigs to prevent unwanted litters and for their health and well-being.
millions
A billion!
Pigs can breed multiple times a year. Sows can have multiple litters in a year, with an average gestation period of around 3 months, 3 weeks, and 3 days. They can typically produce 2-3 litters per year.
Avg. piglets per litter is 9.5
how many people get bronchitis per year
According to the Shark Foundation, approximately 40 people per year are killed by pigs in the USA and Canada, but that includes fatal car crashes into pigs (which can weigh over 1000 pounds), not just people directly mauled by swine. The "National Bureau of Swine Violence" and its 20000+ statistic are fake, fake, fake.
about 5 per year
It is impossible to tell because average consumption is based on the amount of meat or beef consumed per day (or year), not "how many cows [that] are eaten...[per] day." Thus the question has no merit no matter how you try to look at it.
Guinea Pigs don't reproduce per day.
how many people get mononucleosis per year and whats the normal age to get it?
To express 168 pigs in 12 pens as a unit rate, you divide the total number of pigs by the number of pens. This gives you 168 pigs ÷ 12 pens = 14 pigs per pen. Therefore, the unit rate is 14 pigs per pen.