Judul: Kajian Perkembangbiakan Embrio Burung Mamoa (Eulipoa wallacei) di Kecamatan Galela Kabupaten Halmahera Utara
Abstrak: Some studies on embryo’s reproduction on bird has already been done, however scientific studies on mamoa bird are very few. This research was done to study characteristics of hatching nest on laying habitat, embryo development stages which naturally and artificially hatched, compare the rate of natural and artificial hatchability and also vibiliability of Mamoa chick at 1 month old. This research was done in 3 laying area around the beach in Galela district. By using 70 eggs each or natural and aryificial hatching. Parameter observed were nesting and hatching characteristic. The result showed that laying habitat of Mamoa bird around the beach were sandy soil SiO2 pH between 5.9-6.7, and high SiO2 content (51.2%). Hatching nests dimension were affected by season (rain/dry) and moon’s shine (dark/light). Embryo’s weight were high on artificial hatching than natural hatching on day 21 to 35, while in other day were not insignificant. Both of naturally and artificially hatched eggs were develop on day 10. Fertility and hatchability on natural hatching wete better (100%) if it compared to artificial hatching (81.18%). One month age Mamoa bird on viability of natural and artificial hatching were (100%). Regression analysis between egg weight and hatching weight on both hatching methods shows linier correlation.
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Judul: Perkembangan Embrio dan Daya Tetas serta Viabilitas Anak Ayam Arab dari Umur Induk yang Berbeda
Abstrak: Low quality and quantity of local chicken egg in Indonesia are mainly due to the poor breeding management. Hen age is one of considered factor of breeding and hatchery management. Until now the embryo development, hatchability, and chick viability of local chicken such as Arab chicken from different age is still questionable, although it has been proven on broilers. This research was conducted at Laboratory of Poultry Hatching, Departement of Animal Science Production and Technology, Animal Science Faculty, Bogor Agricultural University from May till June 2012. The Complete Randomized design with 135 fertile eggs from three different age of hens (36, 42, and 54 weeks) used in this study. Exterior quality of fertile eggs, embryo development, hacthability, and chick viability were observed in this study. The data were analyzed by analysis of variance (ANOVA) and then continued by Tuckey analysis. Data of shell cleanness, air egg shell quality, extraembrionic membrane development, hatchability, and viability were analyzed by descriptive method. The data showed that egg weigth, egg index, and embryo weight, beak length, head perimeter of 7th incubation time and embryo weight, neck length, and leg length of 14th incubation time were different (P<0.05). Incressing of hen age could effect the decressing embrio capability to absorb nutrition. The temperature of incubator also effected on metabolism rapidity of embrio. The optimum hen age of to produce good embryo development, hatchability, and viability of Arab Day Old Chick is 36 weeks.
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Judul: Katalis Zink Ferit Tersubstitusi Cu untuk Oksidasi Benzil Alkohol
Abstrak: Katalis berperan dalam menurunkan energi aktivasi. Katalis ZnFe2O4 dan ZnFe2O4 tersubstitusi Cu disintesis menggunakan metode kopresipitasi untuk digunakan dalam oksidasi benzil alkohol. Katalis dicirikan dengan spektrofotometer inframerah (FTIR) dan difraktometer sinar-X. Spektrum FTIR menunjukkan puncak serapan dari ikatan Zn-O dan Fe-O masing-masing pada rentang 559‒575 cm-1 dan 419‒447 cm-1. Difraktogram menunjukkan terbentuknya fase tunggal Zn0.6Cu0.4Fe2O4 pada katalis ZnFe2O4 tersubstitusi Cu 20%. Benzil alkohol dioksidasi dengan sistem refluks. Konversi benzil alkohol meningkat dengan meningkatnya suhu. Kadar benzaldehida yang dihasilkan dengan katalis ZnFe2O4 tersubstitusi Cu 20% lebih tinggi dibandingkan dengan katalis ZnFe2O4 yang tidak tersubstitusi dan yang tersubstitusi Cu 60 dan 80%. Hal tersebut menunjukkan bahwa katalis ZnFe2O4 tersubstitusi Cu 20% memiliki kinerja yang lebih baik dalam oksidasi benzil alkohol menjadi benzaldehida dengan kadar benzaldehida 8.763%.
Keyword: Benzil alkohol, katalis, oksidasi, ZnFe2O4