SELEKSI INDUK KAMBING BOERAWA GRADE 1 DAN 2 BERDASARKAN NILAI MOST PROBABLE PRODUCING ABILITY BOBOT ANAK UMUR ENAM BULAN

Abstract

T he aim of this research was to compare MPPA value for 6 months body weight ( 6 MBW) of 30 heads Boerawa grade 1 (BG1) and 30 heads Boerawa grade 2 (BG2) does and to determine ten heads of the best BG2 does as replacement stock. Research was conducted by survey method at Karya Makmur-1, Karya Makmur-II, and Pelita Karya-III goat farmer groups located at Wonoharjo village, Sumberejo subregency, Tanggamus regency, Lampung province. Sample observed was selected by purposive sampling. Variables observed were 6 MBW of offspring group of BG1 does and BG2 does at the first and second parity. The variables was analysed to know repeatability value and MPPA value for 6 MBW . Repeatability value were estimated by interclass correlation method, MPPA value of BG1 and BG2 was analysed by t student test. Result of this research indicated 6 MBW of offspring group of BG1 does ( 20.57 ± 1.12 kg ) was not different (P>0.05) with the offspring group of B G2 does ( 22.70 ± 1.06 kg), repeatability value of B G1 and BG2 were 0 .29 and 0 .33, respectively, MPPA value of BG1 (20.57 kg) were not different (P>0,05) with BG2 (22.70 kg). It could be concluded that genetic potency of BG1 does and BG2 does was not different and the best ten BG2 does were JJ2 ( MPPA 23 . 49 kg ), DD3 (23 . 42 kg ), LL1 (23 . 40 kg ), JJ1 (23 . 32 kg ), BB3 (23 . 29 kg ), GG1 (23 . 27 kg ), AA1 (23 . 14 kg ), EE2 (23 . 08 kg ), AA2 (2 . 05 kg ), and GG2 (23 . 05 kg ). (Keywords: Boerawa goat, repeatability, Most probable producing ability, interclass correlation).