(case involves hog production contract between parties; plaintiff to provide weaned pigs every nine weeks over 14 month period and defendant, pig farmer, agreed to pay for pigs received; plaintiff delivered pigs and defendant paid via check, but check bounced and plaintiff sued; defendant claimed that plaintiff could have mitigated damages by repossessing pigs and reselling them; court determined that transaction involved sale of goods covered by state (MN) version of UCC Article 2 and that plaintiff need not mitigate damages once buyer accepts goods; under MN version of Article 9 (which applied because plaintiff had security interest in pigs), plaintiff could repossess or seek to recover purchase price; thus plaintiff not required to repossess pigs; plaintiff awarded summary judgment for purchase price plus interest as contract required).