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U. Atmomarsono
Faculty of Animal and Agricultural Sciences, Diponegoro University, Tembalang Campus, Semarang 50275
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences

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BUSINESS PERFORMANCE OF DUCK FARMERS IN BREBES REGENCYCENTRAL JAVA Sumekar, W.; Isbandi, I.; Atmomarsono, U.; Susilowati, I.
Journal of the Indonesian Tropical Animal Agriculture Vol 38, No 3 (2013): (September)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.38.3.171-175

Abstract

The duck farmers in Brebes Regency has not been able to deal with the business dynamics with themain problems in feed and Day Old Duck (DOD).The aim of the research was to analyze the businessperformance of duck farmer in Brebes Regency. The technical and economical efficiency was calculatedto find out the status of duck farmer’s business performance. The research was conducted to four mostactive duck farmer groups (KTTI) in Brebes Regency. The research was done based on survey methodwith 123 duck farmers of the group member as the respondents. The research results show that not all ofthe duck farmers performed their business efficiently (the average technical efficiency is 0.9981) sincethe number of duck ownership, forage, and the use of technology were not optimum yet. The return toscale value of the duck farming businesses was 1.0868, which showed the presence of opportunity toincrease production. This research recommends that it is necessary to manage the productionmanagement in order to increase business performance by optimizing the number of duck ownership,forage feed, and the use of technology.
INTERACTIVE EFFECT OF CAGE DENSITY AND DIETARY BLACK CUMIN LEVEL ON PRODUCTIVE EFFICIENCY IN BROILER CHICKENS Mahfudz, L. D.; Nurfaizin, N.; Atmomarsono, U.; Suthama, N.
Journal of the Indonesian Tropical Animal Agriculture Vol 40, No 1 (2015): March
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.40.1.37-44

Abstract

The present research was aimed to evaluate an interactive effect of cage density and level ofdietary black cumin (BC) on productive efficiency of broiler chickens. A total of 270 broiler chickens(initial body weight of 163.12 ± 8.10g) were allocated into a completely randomized design with a 3 x 3factorial pattern. The first factor was the cage density (bird/m2) namely, D1 = 8; D2 = 10, and D3 = 12.The second factor was BC level (%), namely, B1 = 1; B2 = 2, and B3 = 3. Feed consumption, bodyweight gain (BWG), feed conversion ratio (FCR), protein digestibility, and income over feed cost(IOFC) were the parameters measured. Data were subjected to ANOVA and continued to Duncan test.No interaction between cage density and black cumin on all parameters was observed. Feedconsumption and FCR were increased, but BWG was lowered significantly (P<0.05) due to the cagedensities of 10 and 12 birds/m2 on weeks 2 and 3. Protein digestibility was significantly increased byfeeding 2 and 3% BC. IOFC decreased significantly (P<0.05) when cage densities were 10 and 12birds/m2. In conclusion, the improvement of productive efficiency of broiler chicken reared at the cagedensity of 12 birds /m2 can be sufficiently achieved by feeding 1% black cumin.
Calcium deposition in egg due to substitution of limestone by eggshell flour in feed of laying hens Kismiati, S.; Yuwanta, T.; Zuprizal, Z.; Supadmo, S.; Atmomarsono, U.
Journal of the Indonesian Tropical Animal Agriculture Vol 43, No 3 (2018): September
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.43.3.257-264

Abstract

The aim of this research was to evaluate calcium deposition in egg using eggshell flour as a limestone substitute in feed. Two hundreds laying hen of Isa Brown strain of 25 weeks were used in this study. Treatments were diet with 7.5% limestone as control (T0), 2.5% limestone is substituted with eggshell flour(T1), 5% limestone is substituted with eggshell flour (T2) and limestone is substituted with eggshell flour (T3). A completly randomized design were used to allocated the treatments with 5 replications of each. Each experimental unit consists of 10 laying hens. Parameters measured were egg weight, yolk weight, albumen weight, eggshell weight, calcium of egg (yolk, albumen and eggshell), length, weight and Ca of tibia bone. The results showed that substitution of limestone with eggshell flour had significantly effect (P<0.05) on eggshell weight, Ca deposition on yolk, albumen, and Ca of tibia bone but non significantly effect on egg weight, weight and percentage of yolk, weight and percentage of albumen, percentage and Ca of eggshell, length and weight of tibia bone. In conclusion, calcium deposition in yolk was the highest in the use of 7.5% eggshell flour to substitute limestone but obtained the lowest Ca of bone , while calcium deposition in albumen was the highest in the use of 2.5% eggshell flour.
PHYSICAL CHARACTERISTICS OF CULLED MAGELANG DUCK MEAT AFFECTED BY AGING AND MARINATION IN GINGER EXTRACT Suryanti, U.; Bintoro, V. P.; Atmomarsono, U.; Pramono, Y. B.
Journal of the Indonesian Tropical Animal Agriculture Vol 40, No 2 (2015): June
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.40.2.107-114

Abstract

The study was aimed to improve the physical characteristics of culled duck meat using marinationin ginger extract and aging. The material used were Magelang culled ducks (2.5 years old). Gingerextract was derived from the rhizome of fresh ginger (Zingiber officinale Roscoe). The experimentalused was a factorial design (3x3), with two main factors, namely the concentration of ginger extract andaging time in completely randomized design. Level of ginger extract concentrations were 0, 5, 10% andlong times of aging were 24, 48, 72 hours as combination treatments, and replication for each treatmentwere 3 times. There was a significant interaction between the factors of aging time with ginger extractconcentration in influencing moisture, pH , hardness and the water holding capacity of culled Magelangduck meat. The best treatment to improve the physical characteristics of culled duck meat weremarination in 5% ginger extract and aging for 48 hours.
THE EFFECT OF EXPIRED BREAD MEAL AS CORN SUBSTITUTION IN DIET ON BROILER PERFORMANCE Kismiati, S.; Sarengat, W.; Atmomarsono, U.; Salaamun, R.; Alvi, M.F.
Journal of the Indonesian Tropical Animal Agriculture Vol 35, No 2 (2010): (June)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.35.2.115-119

Abstract

An experiment was conducted to investigate the expired bread meal used as corn substitution in thebroiler diets to optimally the product performance. One hundred day old chick (DOC) male broilerswere given the same diet until 2 weeks old, and then given the treatment diet until 7 weeks of age. ACompletely Randomized Design was used in this study. Data were analyzed by variance of analysis, andfollowed by Duncan’s Multiple Range Test The treatments were : T0 = control feed (without expiredbread meal), T1 = corn substituted with 10% expired bread meal, T2 = corn substituted with 20%expired bread meal, T3 = corn substituted with 30% expired bread meal and T4 = corn substituted with40% expired bread meal. The result indicated that corn substituted with expired bread meal up to 40%has not significantly affected on carcass weight, carcass percentage and feed conversion, but decreasedsignificantly on feed consumption and body weight gain. It can be concluded that the use of expiredbread meal 30% of the proportion of corn produced the most optimal broiler performance. Thesubstitution corn with expired bread meal 40% was decreased body weight gain.
Co-Authors I. Isbandi I. Susilowati L. D. Mahfudz M.F. Alvi N. Nurfaizin, N. N. Suthama Panjaitan, Dameria M R. Salaamun S. Kismiati S. Supadmo T. Yuwanta U. Suryanti, U. V. P. Bintoro, V. P. W. Sarengat W. Sumekar Y. B. Pramono, Y. B. Zuprizal (Zuprizal)