ANALISIS USAHA PEMELIHARAAN SAPI POTONG DENGAN PENERAPAN INSEMINASI BUATAN (IB) DI KECAMATAN PURWODADI KABUPATEN GROBOGAN (Business Analized Beef Cattle from Application Artificial Insemination at Purwodadi District, Grobogan Resident ) (JURNAL SOSIAL EKONOMI PETERNAKAN, 2007)