Judul: Kualitas Semen Domba Garut dengan Pemberian Pakan Limbah Tauge dan Indigofera sp pada Pengencer Tris Kuning Telur.
Abstrak: Garut ram is one of good comodity of the livestock, but still traditional management systems. This is a delimiter in garut ram heir superior quality. Semen preservation in several extender can be as choice to maintain genetic superior of garut ram. Semen quality itself affected by the nutrient factors contained in the waste bean sprouts and Indigofera sp such as protein and vitamin E, which is capable of affecting the quality of spermatozoa in garut ram. The research was aimed to study the influence of feeding with 30% waste bean sprouts and 30% Indigofera sp on sperm quality in the tris egg yolk extender. Semen sample were collected from 4 garut male with age around 11 months were two garut ram was fed with limbah tauge and two garut ram was fed with Indigofera sp. Collected semen were diluted in tris egg yolk extender and stored at refrigerator 5 oC until fifth days. Parameter of semen quality was analyzed as follow: for the colour, consistency, pH, volume semen and sperm mass movement were expressed with descriptively analysis. Concentration and cytoplasmic droplet were tested by T-Test analysis. Sperm motility, sperm viability, integrity of sperm plasma membrane and sperm secondary abnormality were analyzed using Completely Randomized Design Factorial (2x5). The first factor was fed (waste bean sprouts and Indigofera sp) and the second factor was storage time (day 1st,2st,3st,4st and 5st). Data was analyzed by Analysis of Variance (ANOVA) and continued with Duncan test to observed the different between treatments. Result of the experiment showed descriptively: colour, concistency and semen pH in all treatment have same quality. Semen volume were collected from garut ram with fed waste bean sprouts better than with fed Indigofera sp, whereas sperm mass movement with fed Indigofera sp better than with fed waste bean sprouts. T-test analyzed showed all treatment were not significant different (P>0,05) to sperm concentration and cytoplasmic droplet. Analysis of Variance showed sperm motility in all treatment were not significant different (P>0,05) whereas in first and second days storage significant better than after third storage (>40%). Such as with sperm viability and integrity of sperm plasma membrane were significant maintaint until fourth storage with percentage (>60% and >50%). Percentage sperm secondary abnormality in treatment with fed Indigofera sp significant better than treatment with fed waste bean sprouts. It can be summarized that all treatment were not influence to sperm quality garut ram 11 years old, but storage time influential to sperm motility, sperm viability, and integrity of sperm plasma membrane. It is suggested to do further research the influence of both feed on adult ram.
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Judul: Kualitas Spermatozoa Cauda Epididimis Domba Garut yang diberi Pakan Limbah Tauge dan Indigofera sp pada Pengencer Tris Kuning Telur
Abstrak: Feed is one of the important factor to improve the quality of spermatozoa. Feed can be made from waste bean sprout and legume Indigofera sp. Garut ram has high economic value, but it is faced with the problem of limited number of a good quality of male. One of method that can be used to solve a problem is the utilization of cauda epididymal sperm since it has motility and an able to fertilize oocytes as well as ejaculated sperm. The purpose of this research was to determine the effect of feeding (waste bean sprout and Indigofera sp) to increase the quality of garut ram sperm. This research used 8 garut male with age around 11 months and had been raised for 3 months. They were divided into two groups, the first group was fed with 30% waste bean sprout and the second group was fed with 30% Indigofera sp. Parameter of semen quality was analyzed as follow: for the volume, color and consistency were expressed by descriptively, while testis weight, sperm concentration and cytoplasmic droplet were tested by T-test and followed by regression test for correlation between testis weight and sperm concentration. Sperm motility, sperm viability, integrity of sperm plasma membrane and secondary abnormality were analyzed using Completely Randomized Design, Faktorial (2x4) with four replication. The first factor was type ration (waste bean sprout and Indigofera sp) and the second factor was storage time (day 0, 1st, 2nd, 3th). Data was analyzed by analysis of variance and continued with Duncan test to observed the different between treatments. Results of the experiment showed that volume, color and consistency of semen were same in all treatments, while testis weight, sperm concentration and cytoplasmic droplet were not significant different in type ration treatments by T-test (P>0.05). There were no correlation between testis weight and sperm concentration (P>0.05) and expressed as Y = 5654.26 - 3.96X ; R2 = 0.003. Furthermore sperm viability were significant different in all treatments by analyzed of variance (P<0.05). The integrity of sperm plasma membrane and sperm motility were significant different in storage time treatment (P<0.05), but were not significant different in type ration by analyzed of variance (P>0.05). It can be summarized that both of 30% waste bean sprout and 30% Indigofera sp feed treatments were not significantly influence on all of parameter sperm quality.
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Judul: Hamiltonian formulation for linear waves motion in two layers fluid
Abstrak: The surface wave could be considered as a wave that separates two fluids, namely water and air. Based on this assumption, it is introduced the interfacial wave, a wave between two layers of fluid with different density. The formulation of interfacial waves motion begins with deriving the base equation of irrotational ideal fluid. Furthermore, according to irrotational fluid assumption, the base equation can be stated in velocity potential. In this derivation, the fluids domain is assumed to be restricted by rigid lid boundary conditions, both at the upper and lower limit. Therefore, the interfacial waves motion can be explained in a hamiltonian formulation. In the hamiltonian formulation, total energy is defined as the sum of kinetic and potential energy. The hamiltonian system is obtained from reduction of kinetic energy by using the Dirichlet Neumann Operator. The resulted kinetic energy equation is nonlinear. Therefore, this form is linearized by first part of the Taylor expansion. This linearization gives a dispersion relation of linear wave. Based on this dispersion relation, the phase speed of the linear wave depends on the density ratio of the two layers fluid.
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