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All Journal Journal of the Indonesian Tropical Animal Agriculture BERITA BIOLOGI
R. Santosa
Faculty of Animal Science, Gadjah Mada University Jl Fauna 3, Bulaksumur, Yogyakarta
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences

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PENGARUH PEMUPUKAN NITROGEN, FOSFOR DAN KALIUM PADA PERTUMBUHAN TUNAS KANGKUNG (IPOMOEA AQUATICA FORST.) SAEFUDIN, SAEFUDIN; SANTOSA, R.
BERITA BIOLOGI Vol 3, No 5 (1986)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v3i5.1333

Abstract

SAEFUDIN & R. SANTOSA.1986.The effect of nitrogen, phosphorous and potassium fertilizers on the growth of Ipomoea aquatica Forst. Berita Biologi 3 (5): 214-218.Experiments to study the effect of nitrogen, phosphorous and potassium fertilizers on the growth of Ipomoea aquatica, a leafy vegetable, were carried out on four sites, i.e. in the villages of Teluk, Karangklesem, Purwokerto Kulon and Sumampir of the district of Banyumas respectively. The rates of application used were 0, 125, 250 and 375 kg of urea, triple superphosphate or potassium chloride per ha. The nitrogen fertilizer increased significantly the growth of Ipomoea aquatica with optimum rate 250 kg of urea per ha. Potassium chloride increased slightly the stem elongation, but not the vegetable yield, while the phosphorous fertilizer did not show any significant effect.Among sites, the highest yield was obtained from the plot in the village of Teluk, followed by Karangklesem, Purwokerto Kulon and Sumampir in decreasing order.
THE EFFECT OF TYPE OF FEED AND SLAUGHTER AGE ON THE PERFORMANCES AND CARCASS CHARACTERISTIC OF MALE ARAB CHICKEN Suryanto, E.; Sasongko, H.; Maryam, M.; Santosa, R.
Journal of the Indonesian Tropical Animal Agriculture Vol 34, No 3 (2009): (September)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.34.3.181-188

Abstract

An experiment was conducted to evaluate the effect of type of feed and slaughter age on the performancesand carcass characteristics of male Arab chicken. Thirty six male Arab chicken of seven weeks old weredivided into two groups, each group consisted of three cages with six chicken in each group. Two types ofration consisted of Ration One (Par-S + corn) containing 2904 kcal ME and 17 % CP, and Ration Two (BRII) containing 3100 kcal ME and 19% CP. The chicken were raised for seven weeks, weekly weighed, andrandomly taken for slaughter at 12 and 14 week old. The data collected were performances and carcasscharacteristics of the chicken. The data were analyzed using analysis of variance of completely randomiseddesign. The results showed that the chicken fed BR II consumed more protein and energy (483.7 g CP and7868.8 kcal ME) compared to the chicken fed BR I (444.0 g CP and 7586.1 kcal ME). Besides, the chickenfed BR II produced heavier final body weight (1142.5 g) than the chicken fed with BR I (1048.6 g) (P <0,05). Type of ration affected the tenderness of chicken. Slaughter age influenced carcass weight andcarcass physical composition of the chicken (P<0.05). Slaughter age affected the physical characteristic ofmeat. It could be concluded that male Arab chicken fed ration containing higher CP and ME (higher feeddensity) consumed more protein and energy, and finally had heavier final body weight. Slaughter age influencedcarcass weight, carcass physical composition and meat characteristics of the male Arab chicken.
Co-Authors E. Suryanto H. Sasongko M. Maryam Saefudin Saefudin