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All Journal MEDIA PETERNAKAN - Journal of Animal Science and Technology
T R Wiradarya
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Agriculture, Biological Sciences & Forestry

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Sistem 3 Strata sebagai Strategi Pemulihan dan Peningkatan Mutu Genetis Kambing dan Domba Indonesia (ULASAN) T R Wiradarya
Media Peternakan Vol. 28 No. 2 (2005): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

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Abstract

modification of conventional production system called Pyramidal Structure is presented and termed as a Sistem 3 Strata. The system consists of 3 sub systems, they are Breeding, Multiplication, and Commercial. The Pyramidal system had been proven to be very effective in sustaining and improving the genetic potency of layers and broilers (poultry). The system was proposed to be implemented in sustaining and improving the genetic potency of the Indonesian sheep and goats. A simulation was conducted to evaluate the economic feasibility of the system using Garut sheep, based on the assumption of the 15% bank rate, at the capital investment level of Rp 6.400.000.000,00 and the production level of 155 lambs marketed per week. The results indicated that the economic feasibility was reached at the farm capacity of 8.537 su (Sheep Unit). The pay back period was 3,95 years, and the IRR and the NPV (i=20%) at the end of the 6th year were 19,17% and Rp 5.383.297.270,00. Key words: pyramidal structure, breeding, multiplication, commercial, Garut sheep
Daya Pintal dan Kekuatan Benang Bulu Domba Priangan dan Peranakan Merino M Duldjaman; T R Wiradarya; M.I H Muttaqin
Media Peternakan Vol. 29 No. 3 (2006): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

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Priangan sheep is a native sheep of Indonesia and considered as a hair sheep. Its main product is meat. Recently, the Priangan sheep is crossed with a Merino sheep to produce the Priangan-Merino crossbred. Since the Merino sheep is considered as a wool sheep, it is expected that the Priangan-Merino sheep will have a better quality of wool than the Priangan sheep. To measure the wool improvement of the Priangan-Merino crossbred, an experiment was conducted. Fifteen Priangan sheeps and 15 Merino crossbreds were used in this experiment. The spinning count and wool yarn staple length were measured. The experimental statistics and the design of the experiment was completely ramdomized design. The results indicated that staple strength of wool yarn of Priangan was not significantly different with that of Merino cross. Spinning count was significantly different (P < 0.01) between breed. Key words : Yarn, Priangan and Merino cross, staple strenght, spinning count
Roles of Dietary Cobalt and Administration of Mixed Rumen Bacteria in Regulating Hematological Parameters of Pre-weaning Twin Lambs T Adelina; A Boediono; I G Permana; T R Wiradarya; D Evvyernie; T Toharmat
Media Peternakan Vol. 36 No. 2 (2013): Media Peternakan
Publisher : Faculty of Animal Science, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (308.07 KB) | DOI: 10.5398/medpet.2013.36.2.126

Abstract

Cobalt (Co) is required by rumen microorganism for vitamin B12 synthesis. Vitamin B12 is an important cofactor for methionine synthesis and gluconeogenesis. In young ruminants up to 6–8 wk old, the rumen has not been completely developed and rumen microorganisms are not ready to supply vitamin B12. The aim of this research was to determine the potency of mixed rumen bacteria and dietary supplementation of Co and its effect on plasma glucose, blood minerals (Co, Fe, and Zn) concentrations, and hematology of pre-weaning twin lambs. Twelve one month-old local twin lambs were assigned to 4 groups in a randomized complete block design. Lambs were fed cow milk at 10% body weight, adjusted weekly for 80 d. Mixed rumen bacteria were offered at 15 mL/d (8.295x1010 cfu). Dietary treatments were: 1) basal diet (Control), 2) basal diet + 1 mg/kg DM cyanocobalamin (VitB12) and 3) basal diet + 1 mg/kg DM of Co + administration of 15 mL mixed rumen bacteria (CoBac). There were no treatment effects on neither plasma glucose and blood mineral concentrations nor hematological profiles. This study demonstrated that pre-weaning twin lambs are not responsive to supplementation of Co and administration of mixed rumen bacteria.
Co-Authors A Boediono Dwierra Evvyernie I G Permana M Duldjaman M.I H Muttaqin T adelina T Toharmat