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All Journal Majalah Ilmiah Peternakan Jurnal Ilmu Ternak dan Veteriner
K.G. WIRYAWAN
Department of Animal Nutrition and Feed Science, Bogor Agricultural University, Bogor, Indonesia.
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Veterinary

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In vitro slow-release urea characteristics under different molasses levels contained in rice straw based diets D. Kardaya; K.G. Wiryawan; A. Parakkasi; H.M. Winugroho
Jurnal Ilmu Ternak dan Veteriner Vol 14, No 3 (2009): SEPTEMBER 2009
Publisher : Indonesian Center for Animal Research and Development (ICARD)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5187.297 KB) | DOI: 10.14334/jitv.v14i3.339

Abstract

Slow-release urea characteristics of zinc-urea, zeolites-urea, and zeolites-zinc-urea were examined using in vitro techniques. The objective of this experiment was to study the in vitro slow-release urea characteristics of zinc-urea, zeolites-urea, and zeolites-zinc-urea under different molasses concentrations in relation to the ruminal fermentative changes observed in different incubation time. The experimental design employed was randomized block design with a 4 x 3 factorial arrangement plus a control treatment, and conducted in two replications. Factors were various urea sources (urea, zinc-urea, zeolites-urea, and zeolites-zinc-urea) and molasses concentrations (0%, 6%, and 12%) in rice straw based diets. The control treatment was rice straw based diet containing neither urea nor molasses. Diets consisted of 45% rice straw and 55% concentrates (DM basis) were formulated to have similar N and TDN levels. Responses of parameters measured were subjected to MANOVA using the GLM procedure of SPSS 16.00 and differences among mean values, if applicable, were examined using HSD-test. Orthogonal comparisons were used to determine the effects of control treatment vs. various urea sources following significance for the two-factor ANOVA model. Results indicated that zinc-urea, zeolites-urea, and zeolites-zinc-urea under different molasses concentrations contained in rice straw based diets decreased ruminal ammonia up to 48 hours incubation, controlled total VFA level and pH values revealed from lower NH3:VFA ratio, and improved both in vitro dry matter and organic matter degradabilities. The best impact of the in vitro slow-release urea characteristics of zinc-urea, zeolites-urea, and zeolites-zinc-urea on the ruminal fermentative changes (NH3, VFA, pH, DMD, OMD) was well attributed to the diets contained 6% molasses. Key words: Slow-Release Urea, Molasses, Rice Straw, In Vitro
PENAMPILAN AYAM PEDAGING YANG DIBERI PROBIOTIK (EM-4) SEBAGAI PENGGANTI ANTIBIOTIK K.G. WIRYAWAN; M. SRIASIH; I. D. P. WINATA
Majalah Ilmiah Peternakan Vol 8 No 2 (2005)
Publisher : Fakultas Peternakan Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (40.029 KB)

Abstract

RINGKASAN Tujuan penelitian ini adalah untuk mengevaluasi apakah probiotik EM-4 berpengaruh positif terhadap performa ternak ayam pedaging, dan apakah probiotik ini dapat menggantikan penggunaan antibiotik Sulfamix. Seratus ekor ayam pedaging (CP 707) umur satu minggu dialokasikan secara acak ke dalam empat kelompok perlakuan, yaitu To = Kontrol (tanpa probiotik), T1 = 3 cc antibiotik Sulfamix dalam 1 l air minum, T2 dan T3 masing-masing 1 cc dan 2 cc probiotik (EM-4) dalam 1 l air minum yang selalu tersedia. Masing-masing perlakuan terdiri atas lima ulangan dengan lima ekor ayam per unitnya. Diberikan pakan komersial dan air minum secara ad libitum sampai ayam berumur enam minggu. Ayam serta pakan yang diberikan dan sisanya ditimbang tiap minggu. Hasil penelitian menunjukkan bahwa pemberian probiotik maupun antibiotik ternyata tidak berpengaruh nyata (P>0,05) terhadap konsumsi ransum, pertambahan berat badan, dan efisiensi penggunaan ransum. Pemberian 1 cc probiotik (T2) memberikan konsumsi ransum dan pertambahan berat badan nyata (P<0,05) lebih tinggi daripada pemberian antibiotik (T1) dan tidak berbeda nyata (P>0,05) dibandingkan dengan kontrol (To). Dari hasil penelitian ini dapat disimpulkan bahwa pemberian antibiotic Sulfamix dalam ransum dan probiotik melalui air minum ternyata tidak berpengaruh terhadap penampilan ayam broiler umur 1-6 minggu. Pemberian probiotik (EM-4) pada dosis 1 cc/1 l air minum ternyata memberikan hasil yang lebih baik daripada pemberian antibiotic.
Co-Authors A. Parakkasi D. Kardaya H.M. Winugroho I. D. P. WINATA M. SRIASIH