KOMPOSISI KIMIA DAN KECERNAAN IN VITRO RUMPUT Brachiaria brizantha cv. MG 5 YANG DITANAM DENGAN LEVEL PEMUPUKAN NPK YANG BERBEDA

TIA AMBARWATI, Nafiatul Umami, S.Pt., MP., Ph.D. ; Ir. Subur Priyono Sasmito Budhi, Ph.D.

2016 | Skripsi | S1 ILMU DAN INDUSTRI PETERNAKAN

Penelitian ini bertujuan untuk mengetahui kualitas rumput Brachiaria brizantha cv. MG 5 yang meliputi kandungan nutrien dan kecernaan rumput B. brizantha cv. MG 5 yang meliputi kecernaan bahan kering (KcBK) dan kecernaan bahan organik (KcBO) yang ditanam dengan pemberian level pupuk NPK yang berbeda dengan metode in vitro. Perlakuan pupuk yang diberikan meliputi pupuk NPK 25-5-7 dengan level 0 kg/ha (P0), 150 kg/ha (P1) dan 300 kg/ha (P2). Pemberian pupuk dilakukan 2 kali selama pemeliharaan yaitu pada umur 15 hari dan 30 hari. Defoliasi dilakukan pada hari ke-60. Rumput B. brizantha cv. MG 5 yang sudah dipanen kemudian dioven dan digiling dihasilkan sampel yang kemudian dilakukan analisis proksimat dan analisis kecernaan in vitro. Data yang didapat kemudian dianalisis dengan menggunakan Rancangan Acak Lengkap (RAL) pola searah, kemudian bila terdapat perbedaan nyata sebagai efek perlakuan dilanjutkan dengan uji Duncan’s Multiple Range Test (DMRT). Hasil penelitian menunjukkan bahwa pemberian pupuk NPK dengan level yang berbeda tidak pengaruh nyata terhadap bahan kering, bahan organik, protein kasar, lemak kasar, serat kasar, kecernaan bahan kering (KcBK) dan kecernaan bahan organik (KcBO) rumput B. brizantha cv. MG 5. Kata kunci : Brachiaria brizantha cv. MG 5, kecernaan, in vitro, pupuk NPK

This research was aimed to know the quality of Brachiaria brizantha cv. MG 5 grass including the nutrient content and digestibility, which contains the digestibilty of dry and organic matters planted with different level of NPK fertilizer. The analysis of in vitro digestibility was conducted in May 2015 in the Laboratory of Forage and Pasture, Faculty of Animal Science, Gadjah Mada University, Yogyakarta. The fertilizer used in this experiment was 25-5-7 NPK fertilizer. The treatment of fertilization were 0 kg/ha, 150 kg/ha and 300 kg/ha NPK fertilizer. The fertilizer was given twice during the plant growth, namely in the 15th and 30th day. The defoliation was conducted in the 60th day. B. brizantha cv. MG 5 grass was harvested and then put in an oven and grinded. The samples were measured their proximate content and in vitro digestibility. The obtained data were analyzed by using Completely Randomized Design (CRD) and continued with Duncan’s Multiple Range Test (DMRT). The results showed that different fertilization level of NPK did not affect the dry and organic matters, crude protein, fat, and fiber, digestibility of dry and organic matters of B. brizantha cv. MG 5 grass. Keywords : Brachiaria brizantha cv. MG 5, digestibility, in vitro, NPK fertilizer

Kata Kunci : Kata kunci : Brachiaria brizantha cv. MG 5, kecernaan, in vitro, pupuk NPK