East Tenggara Timur (NTT) Province that was often called by cattle source mastering ruminant livestock commodity including: beef cattle was 803.450, dairy cows was 39 and buffalo was 133.122, totally was 936.611. In regarding to the land area that was managed by household including: not agricultural land area was 396,19 m 2 , agricultural land area i.e. rice field land area was 1.228,38 m 2 , not rice field land area was 7.616,50m 2 , the land area totally was 8.844,88 m 2 (agricultural sense, 2013). Based on the ability, the research was conducted by the writer toward three regencies in NTT, those regency were: Kupang, Timur Tengah Selatan (TTS) and Belu. Belu regency has ruminant cattle that looked after of food land, horticultural and plantation. The result of this research were: (4) The buffalo Location Quotient (LQ) value was 6,291957 in Kupang regency, next to the buffalo LQ value was 4,94106 in TTS regency and the buffalo LQ value was 2,076242 in Belu regency. The dairy cows LQ value was 1.457694 found in TTS regency. This research result was able to be concluded that livestock population towards food land and plantation high reality positive relation (R 2 = 0,98 P<0,01). LQ value of buffalo cattle was continuously highest obtained in Kupang regency, TTS and Belu, thus it could become buffalo cattle central for other district in NTT province. As well as, in TTS regency it could be central of dairy cattle therefore it was larger than one.
Penelitian ini dilakukan untuk mengetahui sejauh mana hubungan perkembangan populasi sapi bali di Baliterhadap luas lahan pertanian. Untuk mendapatkan data yang representative mewakili Bali maka sampling dilakukandi berbagai Kabupaten Kota (BPS). Data dianalisis dengan beberapa model regresi yaitu regresi polinomial, regresiexponensial, regresi logaritmik dan Hoerl’s regresi. Data diolah dengan Costat. Hasil penelitian menunjukkan bahwamelalui model regresi polinomal didapatkan bahwa hubungan luas lahan terhadap populasi sapi bali berhubunganpositif sangat nyata (P<0,05) R2 =0.6696 dan Mode persamaan matematika Y = 9.426 + 1,1061X. Melalui modelregresi exponensial didapatkan bahwa hubungan luas lahan terhadap populasi sapi bali berhubungan positif sangatnyata (P<0,05) R2=0,6580 dan model persamaan matematika Y = 14,0396 e 0,0278. (3). Melalui model regresilogaritmik didapatkan bahwa hubungan luas lahan terhadap populasi sapi bali berhubungan positif nyata (P<0,05)R2 = 0,5867 dan model persamaan matematika Y = - 35,1095 + 25,9318 Ln(X) dan (4). Melalui Hoerl’s didapatkanbahwa hubungan luas lahan terhadap populasi sapi bali berhubungan positif sangat nyata (P<0,05) R = 0,8923dan model persamaan matematika Y = 2,5042 X0,8504 e -0,0017. Dari ke empat model yang dicoba disimpulkanbahwa semua menunjukkan bahwa model hubungan fungsi matematika antara luas kepemilikan lahan terhadapjumlah populasi sapi bali menunjukkan hubungan yang positif significant sampai sangat significant (P<0,05)dengan demikian alih fungsi lahan pertanian di Bali mengakibatkan luas lahan peternakan berkurang dan dapatmembahayakan poulasi sapi bali.
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