RESPON PRODUKSI SAPI PERANAKAN ONGOLE TERHADAP ARAS PEMBERIAN KONSENTRAT DAN PAKAN BASAL JERAMI PADI FERMENTASI

Abstract

The research was conducted in Catur Sari farmer group in Blora, Central Java from August 14 to November 24, 2001. This research aims to measure the production traits of Ongole Crossbred Cattle under different level of concentrate supplementation and fermented rice straw as their basal feed. As many as 24 male Ongole crossbred cattle, with the age ranges from 1,5 to 2 years old, and body weight ranges from 175-200 kg were treated with 4 levels of concentrate (9.4% crude protein) supplementation using Completely Random Design (CRD). Concentrate supplementation applied were: 2 kg, 3 kg, 4 kg, and 5 kg for Tl, T2, T3, and T4, respectively, while fermented rice straw was fed ad libitum. Average daily gain, feed efficiency, and growth of body measures were observed during the experimental period of 3 months. Statistical analysis showed that the different level of concentrate supplementation was significantly influence (P<0.05) dry matter, protein, and total digestible nutrient (TDN) intake, and their average daily gain. While feed efficiency and body measures were not significantly different (P>0.05) among the treatment. The average dry matter intake were 6.62, 8.54, and 10.17 kg/day for T1, T2 & T3 (not significantly difference), and T4, respectively. Crude protein intakes were recorded as high as 0.485, 0.605, 0.694, and 0.797 kg/day for T1, T2, T3, and T4, respectively. While the average TDN consumptions were 45.12% for Ti and T2 that not significantly different (P>0.05), 53.25% for T3 and T4 that not significantly different (P>0.05). The average growth rates of the body measures were 0.23, 0.04, and 0 14 cm/day, for the body length, body height, and hearth girth, respectively. It can be concluded that the fermented rice straw fed Ongole crossbred having positive response on feed consumption and average daily gain when supplemented with concentrate (9.44 CP) from 2 to 5 kg/day, but it does not followed by the increase of the efficiency and of the growth of the physical structure. Sebuah penelitian telah dilakukan di Kelompok Petani Petemak Sapi Potong (KPPSP) di Desa Kemiri Kecamatan Kunduran Kabupaten Blora pada tanggal 14 Agustus sampai 24 Nopember 2001. Penelitian bertujuan untuk mengetahui respon produksi sapi potong Peranakan Ongole terhadap aras pemberian konsentrat yang diberi pakan basal jerami padi fermentasi. Mated yang digunakan adalah 24 ekor sapi Peranakan Ongole (PO) jantan berumur 1,5 s/d 2 tahun bengan bobot badan antara 175 — 200 kg. Rancangan percobaan yang digunakan adalah Rancangan Acak Lengkap (RAL) dengan 4 perlakuan yaitu pemberian konsentrat dengan aras 2 kg (T1), 3 kg (T2), 4 kg (T3), dan 5 kg (T4), masing-masing perlakuan dilakukan 6 kali ulangan. Variabel yang diamati meliputi pertambahan bobot badan (PBB), konsumsi protein kasar (PK), bahan kering (BK), total degetible nutrient (TDN), efisiensi penggunaan pakan dan pola pertambahan ukuran-ukuran tubuh. Hasil analisis statistik menunjukkan bahwa aras pemberian konsentrat menunjukkan perbedaan (P<0,05) konsumsi BK, PK, TDN dan PBB. Aras pemberian konsentrat temyata tidak menyebabkan perbedaan (P>0,05) efisiensi penggunaan pakan. Aras pemberian konsentrat konsentrat temyata tidak menyebabkan perbedaan pertambahan ukuran-ukuran tubuh (panjang badan, lingkar dada dan tinggi gumba) Rata-rata konsumsi BK penelitian ini tercatat sebesar 6,62, 8,54 dan 10,17 kg/ekor/hari, masing-masing untuk T1, T2 dan T3 (tidak berbeda nyata) dan T4; rata-rata konsumsi protein kasar sebesar 0,485, 0,605. 0,694 dan 0,797 kg/ekor/hari, masing-masing untuk T1, T2, T3 dan T4; sedangkan rata-rata konsumsi TDN sebesar 45,12 dan 53,25, masing-masing untuk Ti dan T2 (tidak berbeda nyata) dan T3 dengan T4 (Tidak berbeda nyata). Rata-rata pertumbuhan ukuran-ukuran tubuh tercatat sebesar 0,23; 0,04; 0,14 cm/ekor/hari, masing¬masing untuk panjang badan, tinggi gumba dan Iingkar dada Pertambahan ukuran-ukuran tubuh sapi PO yang diteliti secara nyata (P<0,05) mengikuti persamaan regresi linear. Kesimpulan dari penelitian ini adalah peningkatan aras pemberian konsentrat direspon positip oleh sapi PO melalui pertambahan bobot badan, konsumsi pakan (BK, PK, TDN), dan pertambahan ukuran tubuh tetapi tidak diikuti oleh peningkatan efisiensi penggunaan pakan.