United States inventory of all hogs and pigs on Sept. 1, 2011 was 66.6 million head. This was up 1 percent from Sept. 1, 2010, and up  3 percent from June 1, 2011.  
 
Breeding inventory, at 5.81 million head, was up 1 percent from last year, and up slightly from the previous quarter. Market hog inventory, at  60.8 million head, was up 1 percent from last year, and up 3 percent from  last quarter.
 
The June-August 2011 pig crop, at 29.1 million head, was up 1 percent from 2010 and up 1 percent from 2009. Sows farrowing during this period totaled  2.90 million head, down 1 percent from 2010 and down 2 percent from 2009. The sows farrowed during this quarter represented 50 percent of the breeding  herd. The average pigs saved per litter was a record high 10.03 for the June-August 2011 period, compared to 9.81 last year. Pigs saved per litter by size  of operation ranged from 7.50 for operations with 1-99 hogs and pigs to 10.10 for operations with more than 5,000 hogs and pigs.
 
United States hog producers intend to have 2.87 million sows farrow during the September-November 2011 quarter, down slightly from the actual farrowings during the same period in 2010, and down 1 percent from 2009. Intended farrowings for December-February 2012, at 2.86 million sows, are up slightly from 2011, but down 1 percent from 2010.
 
The total number of hogs under contract owned by operations with over 5,000 head, but raised by contractees, accounted for 46 percent of the total United States hog inventory, up from 43 percent last year.
                                              
Revisions
All inventory and pig crop estimates for September 2010 through June 2011 were reviewed using final pig crop, official slaughter, death loss, and updated import and export data. Based on the findings of this review, an adjustment of less than one half of one percent was made to the March 2011 total inventory. An adjustment of one half of one percent was made to the June 2011 total inventory. An adjustment of less than one half of one percent was made to the December 2010-February 2011 pig crop.
 
This report was approved on Sept. 28, 2011.

Hogs and Pigs: Inventory Sept. 1, 2011

Farrowings and Farrowing Intentions

Read the full USDA report.

Source: USDA-NASS