Judul: Male Rabbits Weaning of Response which given Root Tubers as Source Alternative Energy in Ration Kind of Pellet.
Abstrak: An experiment was planed to know the male rabbits weaning of response which given root tubers as source alternative energy in ration kind of pellet. Twenty male rabbits of weaning had a mean of live weight 271 ± 32 g which old age 4-5 week. Exploiting and information about usage of root tubers as energy resources still very limited. While rabbit livestock. specia11y weaning rabbit at a periode of growed needed more energy resources compared to adult rabbit, so in this research tried some energy resources of root tubers, such as sweet potatoes, cassava and tannia in rabbit ration. An experimental method was used Completely Randomized Design with 4 treatment and 5 replication. Treatment given kind of pellet with source of different energy that is RI: energy resources of maize; R2: energy resources of sweet potatoes; R3: energy resources of cassava; R4: energy resources of tannia. The results are analyzed with ANOVA and Duncant Test to know difference between treatment (Steel and Tonie, 1993). The observed parameters were feed conswnptio~ water consumptio~ daily weight gai~ feed efficiency, mortality and economic value. The results showed that the treatment were significant ( P<O.05) on dry mater intake. but not significant on water consumptio~ daily weigth gain, feed efficiency and feed convercy. It was concluded that usage of sweet potatoes, cassava and tannia as energy resources at level 300/0 can used t!J feed alternative for rabbits because are given a good response and economic value. Key words: rabbit, pellet, root tubers, energy
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Judul: The Subsitution of Soybean Meal With Tea Waste in Ration Pellet to The Performance of Cross-Breed Weanling Rabbits.
Abstrak: The use of alternative feed can be used to reduce feeding cost. Tea waste is one of bottle beverage industry that can be used as protein resource in rabbits ration due to the high protein contain 27 % (Istirahayu). Twenty female cross-breed weanling rabbits with the initial average body weight 612 ± 89 gram. The experimental design use in this research was completed randomazed design with four treatments and five replications. The data obtained from the experiment was processed using the ANOVA. Whenever a significant different was identified, data processing was continued using the Duncan's Range Test (Steel and Tome, 1993). The amount of treatments shows the level of subtitution of soybean meal with tea waste and concentrated (com 26%, rice brand 20 %, molases 5%, wheat brand 2%, vegetables oil 0.5%, premix 1 %, CaCO3 0.5%), AT0 = 45%: 0% : 55%, AT1 = 30%: 15% : 55%, AT2 = 15% : 30% : 55% and AT3 = = 0% : 45% : 55%. The result shows that the treatment were significantly (p<0,01) higher on dry matter intake, body weight gain and ration convertion. So the rabbit mortality only of treatment AT0. Based on the value dry matter intake, body weight gain and ration convertion the results of this study shows that tea waste can be used as a source of protein in rabbit ranswn up to 45%. The best level of substitution is soybean meal 30 % with 150/0tea waste and 55% concentrate. Keywords: Rabbits, subtitution, soybean meal, tea waste, dry matter intake, body weight gain, ration convertion, mortality.
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Judul: Gelombang soliter internal pada lapisan atmosfiri yang memiliki perubahan kecepatan angin yang cepat
Abstrak: Gelombang internal adalah suatu gelombang yang terjadi di dalam suatu fluida. Gelombang ini muncul karena adanya perubahan rapat massa di setiap lapisan di dalam fluida. Salah satu gelombang internal yang ditemui di lappisan atmosfir adalah gelombang soliter internal, seperti yang terjadi pada fenomena "morning glory" di Australia. pada fenomena "Morning glory" terjadi penurunan tekanan hingga bebrapa milibar.
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