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The effect of artificial dehydration on the survival and reproduction of Lymnaea rubiginosa S Widjajanti
Jurnal Ilmu Ternak dan Veteriner Vol 4, No 1 (1999): MARCH 1999
Publisher : Indonesian Center for Animal Research and Development (ICARD)

The effect of artificial dehydration on snail Lymnaea rubiginosa was investigated in the laboratory by monitoring its survival and development, because as aquatic organism, this snail must be able to adapt or tolerate with the changes in its habitat. Fifty laboratory-reared L. rubiginosa with shell length between 1.0-1.5 cm (adult) were placed in each sloping earth aquarium (60x80x20 cm) which were already filled with water about 15 cm depth. Five aquaria were used in this study, and one week after being established the water from 4 aquaria was drained while one aquarium was retained with water as a control. The water was replaced in one of dehydrated aquarium each week for four weeks, commencing one week after draining the water. The survival of snails in each aquarium were recorded every two days over a period of 3 months. The results indicated that the mortality rate of adult snails increased as the period of dehydration increased. After four week dehydration only 16% of adult snails survive compared to 68% survival in the control aquarium, and dehydration for 4 weeks prolonged the hatching time of eggs. Moreover, in dehydrated aquaria, the egg masses were deposited in a random pattern on the surface of the soil, whereas in the control aquarium they were laid on the soil-water junction. Key words : Dehydration, Lymnaea rubiginosa, survival, fasciolosis

The susceptibility differences of buffalo and Ongole calves against trickle infection with Fasciola gigantica Ening Wiedosari; S Widjajanti; S Partoutomo
Jurnal Ilmu Ternak dan Veteriner Vol 3, No 1 (1998)
Publisher : Indonesian Center for Animal Research and Development (ICARD)

A pen trial was carried out in order to determine the susceptibility differences of a trickle infection with Fasciola gigantica in buffalo and Ongole calves. Treated animals were infected orally with 15 metacercariae of F. gigantica twice weekly for 32 weeks and were slaughtered at 36 weeks. The results showed that buffalo calves had significantly lower fluke burdens than Ongole calves (P<0 .01) . All of the infected Ongole calves had fasciola eggs in their faeces 18 weeks after the commencement of infection. In contrast, eggs were detected only in 3 out of 7 infected buffalo calves at week 20, in 4 at week 28 and in 6 at week 30. Faeces of the seventh buffalo remained free of eggs until week 36. Rates of growth were reduced by 25%and 10,3% in infected Ongole and buffalo calves respectively . Circulating blood eosinophilia ofboth hosts, ahallmark of helminth infections, increased following infection, but values in buffaloes was greater than Ongole calves mainly in week 4 and 8 after infection (P<0.01). These results might be concluded that the susceptibility of buffalo calves to trickle infection with F. gigantica was lower compared to Ongole calves. Keywords : Fasciola gigantica; susceptibility, buffalo calves, Ongole calves

Extension program on the control of bovine fasciolosis in West Java, Indonesia Eny Martindah; A Kusumaningsih; S Widjajanti; S Partoutomo; B Frank; Suhardono .
Jurnal Ilmu Ternak dan Veteriner Vol 3, No 3 (1998)
Publisher : Indonesian Center for Animal Research and Development (ICARD)

An extension program to control fasciolosis in cattle and buffalo was undertaken in collaboration with officers of the District of Livestock Services (DLS) and farmer organizations in the Surade district of West Java. Control strategies were based on results of extensive epidemiological studies on fasciolosis in this area over the past 4 years. Recommendations included: (1) preventing animals grazing harvested rice fields adjacent to a village or cattle pen; (2) feeding stock only the top two-thirds of freshly cut rice stalks; (3) mixing cattle or buffalo faeces with manure of ducks or chicken naturally infected with Echinostoma revolutum, before using them as fertilizer in rice fields; and (4) a single treatment with triclabendazole in July, about 6 weeks after harvest of the last seasonal rice crop. Farmers were surveyed in January 1996 to determine their level of knowledge about fasciolosis. The extension program commenced in February, soon after planting the second seasonal rice crop in four villages. At first, leaflets were distributed to farmers, and posters were displayed in each village to provide basic information. Following discussions with village leaders, groups of farmers met in each village to discuss the advantages they saw in each strategy, ways they could implement them, and to identify socio-economic constraints that needed to be overcome. Taped interviews were prepared for a local radio station and the farmer groups. In August, final survey was conducted to determine the change in knowledge and attitudes that had occurred as a result of the extension program. Bennett’s hierarchy was used at each stage to evaluate the effects of inputs and activities. Farmers adopted the techniques of cutting and feeding rice-stems 2/3 above water-level, and isolating cattle from rice-fields during harvest time, as these appeared to be beneficial in social and economic terms; but they rejected the two other practices where they perceived that socio-economic costs exceededbenefits. Key words : Fasciolosis control, extension program, cattle, buffalo

Comparison between antibody-elisa test and fecal egg count for detecting Fasciola gigantica infection in cattle S Endah Estuningsih; S Widjajanti; Gatot Adiwinata
Jurnal Ilmu Ternak dan Veteriner Vol 9, No 1 (2004): MARCH 2004
Publisher : Indonesian Center for Animal Research and Development (ICARD)

The comparison between antibody-ELISA test and fecal egg count for detection of natural infection of Fasciola gigantica in cattle was observed. One hundred and fifty samples of blood, feces and livers were collected from cattle slaughtered in the abattoir in Jakarta. Serum was collected from the blood samples and the level of antibody was determined by using antibody- ELISA test. The fecal samples were processed by using sedimentation technique in order to detect the present of F. Gigantica eggs. The livers were processed for liver flukes count. The result showed that from the liver examination, 38.7% cattle were negative flukes, 16% had 1-10 flukes, 34% cattle had 11-100 flukes and 11.3% cattle had more than 100 flukes. About 44.7% infected cattle had less than 100 eggs of F. gigantica per gram feces, however no eggs of F. gigantica were found in 13% infected cattle. The result of antibody-ELISA test showed that from 92 cattle infected with F. gigantica, 84 cattle had OD > 0.38 (range from 0.38-1.77) and 8 cattle had OD < 0.38 (range from 0.18-0.37). In contrast, from 58 cattle without flukes, 7 cattle had OD > 0.38 (range from 0.38-1.95) and 51 cattle with the OD < 0.38 (range from 0.1-0.33). The sensitivity of the fecal examination technique was 87% and the specificity was 100%. The sensitivity and specificity for antibody-ELISA test were 91 and 88% respectively. Key words: Antibody-ELISA, Fasciola gigantica, feces, liver

Characterisation of protein antigen from Fasciola gigantica of different age S Endah Estuningsih; S Widjajanti
Jurnal Ilmu Ternak dan Veteriner Vol 4, No 1 (1999): MARCH 1999
Publisher : Indonesian Center for Animal Research and Development (ICARD)

The protein antigens extracted from adult fluke Fasciola gigantica, 3, 6 and 9 weeks old and newly excysted juvenile (NEJ) were identified using SDS-PAGE and immunoblotting techniques. Sera from fat-tailed sheep which artificially infected with the metacercariae of F. gigantica were used for immunoblotting. The results showed that the protein antigen profile of adult fluke, 6 and 9 weeks old flukes had similar. Bands with molecular weight between 24 kDa to 114 kDa. Protein bands with molecular weight <24 kDa and >198 kDa were also detected from the adult fluke. The use of immunoblotting technique, there were two antigenic protein molecules identified from adult fluke, NEJ and 3, 6, and 9 weeks old fluke with the molecular weight 46 kDa and 47 kDa. The protein band with molecular weight >198 kDa shown thicker on the NEJ than that of adult fluke, and 6 and 9 weeks old flukes. The role of protein with molecular weight of 46 and 47 kDa were the interested findings need to be evaluatedfor serological analysis. Key words : Protein antigen, Fasciola gigantica, SDS-PAGE, immunoblotting

The responses of eosinophil and packed cell volume (PCV) on sheep infected with Fasciola gigantica S Widjajanti; S Endah Estuningsih; Subandriyo Partoutomo; H.W Raadsma; T.W Spithill; D Piedrafita
Jurnal Ilmu Ternak dan Veteriner Vol 7, No 3 (2002): SEPTEMBER 2002
Publisher : Indonesian Center for Animal Research and Development (ICARD)

The responses of eosinophil and packed cell volume (PCV) values were verified in infected sheep, in order to identify whether these parameters could be used to predict the flukes burden and their correlation with breed resistance. Fifteen Indonesian thin tail sheep (ET), 9 Merino sheep and 148 backcross sheep generated from mating of Merino sheep and F1 sheep (Merino X ET cross) were infected with 300 metacercariae of Fasciola gigantica. The blood samples were collected every 2 weeks by using EDTA venoject tubes in order to determine the amount of eosinophils and the PCV value. After 14 weeks of infection all of sheep were killed and the liver was collected in order to determine the number of flukes. The results showed that the amount of eosinophils increased 2 weeks after infection and reached the peak at week 4 after infection. The average of eosinophils in ET appeared higher than the other 2 breeds (Merino was the lowest and the backcross was in between). The correlation between the number of flukes recovered from the liver and the eosinophil counts were positive in ET and Merino, but negative in the backcross sheep. The PCV values remained constant along the trial, except at week 14 after infection; the PCV values were slightly decreased in backcross sheep and Merino sheep, but not in ET sheep. The correlation between number of flukes in the liver and the PCV values were negative in all breeds of sheep. These results suggested that the eosinophilic and PCV’s response of ET were higher compared to backcross and Merino sheep, thus that responses were thought to be associated with the resistant phenomenon. Key words: Fasciolosis, eosinophil, PCV, sheep

Comparative studies of resistance on Indonesian Thin Tail (ITT) sheep, St. Croix, merino and the crossbreed of ITT and St. Croix, against the infection of Fasciola gigantica S Widjajanti; S.E Estuningsih; S Partoutomo; J.A Roberts; T.W Spithill
Jurnal Ilmu Ternak dan Veteriner Vol 4, No 3 (1999): SEPTEMBER 1999
Publisher : Indonesian Center for Animal Research and Development (ICARD)

resistance is heritable. In order to re-evaluate this evidence, 20 ITT sheep were infected with 350 metacercariae of F. gigantica and for comparison, 10 St. Croix sheep, 10 Merino sheep and 20 crossbred of ITT x St. Croix sheep were also infected with the same dose of metacercariae. The results showed that ITT sheep was highly resistant than the other breed, whereas St. Croix and Merino sheep were susceptible. 60% of the crossbred were as resistant as ITT sheep and the other 40% were as susceptible as the St. Croix sheep. Thus, it is proposed that there might be a hereditary resistance factor such as a dominant gene which inducing the mechanism of resistance in ITT sheep, and there is some indication that IgG2 might act as a blocking antibody that interferes the mechanism of resistance. Key words : ITT sheep, Fasciola gigantica, genetic resistance, dominant gene

Antibody fluctuations of infected cattle with Fasciola gigantica and the effect of triclabendazole treatment S Widjajanti; S.E Estuningsih; Suharyanta .
Jurnal Ilmu Ternak dan Veteriner Vol 6, No 4 (2001): DECEMBER 2001
Publisher : Indonesian Center for Animal Research and Development (ICARD)

Observation on the antibody fluctuations of infected cattle with metacercariae of Fasciola gigantica and the effect of triclabendazole treatment were made by means of ELISA technique. Seven cattle were infected with 700 metacercariae and one cattle remained uninfected, as negative control animal. Treatment with triclabendazole was given to 6 cattle, when the mean antibody levels of infected cattle reached the peak, and the other one remained untreated, as positive control animal. One week after treatment the mean antibody levels started to drop and then decreased gradually. After eight weeks of treatment, the mean antibody levels of the treated cattle reached the lowest level or the same value as before infection, thereafter, 6 cattle were reinfected with different dosages of metacercariae of F. gigantica. Two cattle were infected with 400 metacercariae, the other two were infected with 600 metacercariae and the rest of them were infected with 800 metacercariae. The results showed that the immunological responses of re-infected cattle are quicker (5 weeks after infection) and the peak of the antibody levels are higher (ELISA OD = 1.7) than after the first infection (11 weeks after infection and ELISA OD = 1.2). However, after re-infection, there were no significant different on the antibody fluctuations and antibody levels among the infected group, although those cattle received different dosages. Key words: Antibody, cattle, Fasciola gigantica, ELI

In vitro killing assays of antisera antibody sheep post-infected with Fasciola gigantica with the presence of macrophages cells against homologous and heterologous liver flukes S.E Estuningsih; S Widjajanti; S Partoutomo; T.W Spithill
Jurnal Ilmu Ternak dan Veteriner Vol 4, No 3 (1999): SEPTEMBER 1999
Publisher : Indonesian Center for Animal Research and Development (ICARD)

The previous artificial infection known that the Indonesian Thin Tail (ITT) sheep was resistance against the liver fluke of Fasciola gigantica, the resistances occurred in the early infection. In order to observe the immune resistance, some in vitro studies were undertaken in the laboratory, to assay the ability of the antisera antibody of ITT sheep post-infected with F. gigantica, with the presence of macrophages cells in killing the homologous and heterologous liver flukes. The viability of liver flukes were observed within 24-72 hours of incubation period by observing their motility (motile flukes were designated live and non-motile once were death). The results showed that after 72 hours incubation, the motilities of the Newly Excysted Juvenile (NEJ) of F. gigantica incubated with the presence of post-infected sera and macrophages cells solution were significantly lower (P<0.05) than that of normal sheep sera. On the contrary, the post-infected sera and macrophages cells solution did not reduce the motilities of the NEJ of F. hepatica, and the death of these flukes were not significantly reduced (P >0.05). It seems that the occurrence of homologous antibody to the antigens is very important in the development of killing mechanism. The absence of homologous antibody did not reduce the number of flukes or the ability of macrophages cells in killing F. hepatica was not apparent. Key words : In vitro studies, ITT sheep, macrophages cells, Fasciola gigantica, Fasciola hepatica

Immunological responses of sheep against adult worm extract antigen of Fasciola gigantica S Widjajanti
Jurnal Ilmu Ternak dan Veteriner Vol 4, No 2 (1999): JUNE 1999
Publisher : Indonesian Center for Animal Research and Development (ICARD)

Immunological responses of sheep against adult worm extract antigen of Fasciola gigantica were evaluated in an effort to identify the protein antigen for the candidate of vaccine. In this study the protein antigen from adult worms was extracted, and the extract antigen was then intramuscularly injected into 4 groups of 5 sheep. Two groups received one injection, these included one group injected only with extract antigen and the other group injected with extract antigen emulsified in Quil A adjuvant. The other two groups received two injections with a two week interval, these included one group injected only with extract antigen and the other group injected with extract antigen emulsified in Quil A adjuvant. Three weeks later all of the sheep were challenged with 300 metacercariae of F. gigantica. The antibody titer was monitored every two weeks by using ELISA and the protein profile from each group was compared by using western blotting. Fifteen weeks after challenged all of the sheep were killed and the liver flukes were collected from the liver and counted. The results showed that the antibody titer was higher in the group which received two injections, and the additional of Quil A adjuvant gave much better protection from the infection of F. gigantica (57%) and could avoid the death of the sheep than twice injection of antigen without Quil A adjuvant (37%). Key words : Fasciolosis, Fasciola gigantica, protein antigen, antibody responses, vaccine

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