Judul: Essential Fatty Acid Requirements of Catfish (Clarias batrachus Linn.) for Broodstock Development
Abstrak: This experiment was conducted to determine essential fatty acid requirements of catfish (Clarias batrachus Linn.) for broodstock development. The basic diet supplied to the test fish had protein and fat content 46.51 - 48.29% and 5.8 - 5.96% respectively. The five test diets differed in the essential fatty acid (EFA) level. Diet A contained 0.21% (36-fatty acid and 0.03% S3-fatty acid; diet B 0.67% d6-fatty acid and 2.09%&3-fatty acid; diet C 2.24KU6-fatty acid and 0.07%&3-fatty acid; diet 0 1.85%(;36-fatty acid and 0.56% a3-fatty acid; diet E 0.26% a6 fatty acid and 1.68% d3-fatty acid. Most of US-fatty acid in diet B and D were 1$:3 (33, on the other hand those in diet E were 20:s c33 and 22:6 W3.
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Judul: Study of reproduction performance of female African catfish (Clarias gariepinus) with supplemented by Ascorbyl Phosphate magnesium as a source of vitamin C in diets and implanted with estradiol-17β
Abstrak: The experiment was conducted to determine the effect of dietary ascorbyl phospahate magnesium as a source of vitamin C and implanted with estradiol-17 β on the gonad maturation, egg and larva quality of African Catfish Clarias gariepinus. Fish were treated by various combinations of dietary dosage of ascorbyl phosphate magnesium (0, 600, 1200, and 1800 mg/ kg of feed) and estradiol-17β (00, 250, and 500μ g/kg). Two hundreds sixteen and eighteen pairs of broodstock fish were used for this experiment. Fish were fed with the experimental diets two times a day at satiation. The gonad somatic index, egg diameter, fecundity, hatching rate of the eggs, survival rate, and percentage of abnormal larvae were determined. Results of the experiment indicated that supplementation of ascorbyl phosphate magnesium and estradiol-17β stimulated gonad development and increased hatching rate, fecundity and survival rate, and reduced percentage of abnormal larvae. Combination of ascorbyl phosphate magnesium 1200 mg/kg feed and estradiol-17β 250μ g/kg gave the best reproductive performance.
Keyword: African catfish, Clarias gaviepinus, Ascoryl phosphate magnesium, Reproduction performance

Judul: Memahami Kemacetan Kota Bogor Menggunakan Analisis Jalur
Abstrak: Kemacetan masih menjadi momok yang menakutkan bagi pengendara mobil di perkotaan, salah satunya adalah di Kota Bogor. Menurut survei yang dilakukan Waze (aplikasi navigasi dan lalu lintas) pada tahun 2016, Kota Bogor adalah kota paling tidak ramah kedua di dunia untuk pengemudi kendaraan. Penulis menggunakan aplikasi yang sama mencoba memahami lebih dalam apa yang menyebabkan kemacetan di Kota Bogor, dibantu dengan analisis jalur dapat terlihat bahwa Jalan Padjajaran (Lippo Plaza Kebun Raya – Tugu Kujang) memberikan kontribusi kemacetan secara langsung terbesar untuk Jalan Jalak Harupat. Jalan Otto Iskandardinata memberikan kontribusi kemacetan secara langsung terbesar pada rute Jalan Padjajaran (Lippo Plaza Kebun Raya – Tugu Kujang). Jalan Surya Kencana dan Jalan R. Saleh S. Bustaman memberikan kontribusi kemacetan secara langsung terbesar untuk Jalan Otto Iskandardinata. Jalan Jalak Harupat memberikan kontribusi kemacetan secara langsung terbesar untuk rute Jalan Ir H Juanda. Selain pengaruh langsung terdapat juga pengaruh tidak langsung dan faktor lain diluar model yang memengaruhi kepadatan lalu lintas di rute jalan primer di lingkar Kebun Raya Bogor. Faktor lain tersebut bisa jadi disebabkan oleh kendaraan yang masuk atau keluar melalui rute-rute jalan lain yang tidak terobservasi.
Keyword: analisis jalur, kemacetan, kota Bogor