1.
Effect Of Routine Deworming On The Development Of Resistance Against Git Nematodes In Sheep
by Akram, M | Prof.Dr.Muhammad Ashraf | Dr. Haji Ahmad | Dr. Khalid Pervaiz | Faculty of Veterinary Sciences.
Material type: ; Format:
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Publisher: 1994Dissertation note: In this project the effect of routine deworming on GIT nematodes in sheep was studied with particular reference to the development of drug resistance. Comparison was studied by treating the flocks where routine deworming was practiced with the levamisole and albendazole and where routine deworming was not practiced with any medicine. One twenty sheep positive for GIT nematodes infection were selected. They were divided into six groups A, B, C, D, E and F comprising of 20 animal in each group. Animals of group A, B, C were selected from two different floclwhere routine deworming was practiced with levamisole and albendazole respectively. Animals of group D, E, & F were selected from unregistered private flocl where routine deworming was not practiced. Rectal faecal samples were collected before medication and at the seventh day of medication from all the six groups of sheep to count the eggs per gram of faeces and to count the number of larvae after culture under laboratory conditions.
Groups A & D were treated with the levamisole orally at the dosage rate of 7.5 mg/kg. Groups B and E were medicated with albendazole orally at the dosage rate of 5 mg/kg and groups C & F were kept as control and remained untreated. Then the efficacy of levamisole and albendazole in addition to the development of resistance against these anthelmintics was estimated.
Experimental study revealed that the levamisole showed 98.73% efficacy in the first timely dewormed flock and no any resistance was recorded whereas, 72.55% efficacy was noticed in the regularly dewormed flock, with a slight resistance. Albendazole had 97.13% efficacy in the first timely dewormed private flock and 61.24% efficacy in the regularly dewormed flock. This shows a strong evidence of resistance in the albendazole treated flock.
No side effect were observed in both the groups. Levamisole was found better dewormer with less chances of resistance. However, both drugs can be used safely to achieve control of nematode parasites in sheep.
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2.
Helminthiasis: Its Dissemination And Treatment With Fenbendazole In The Migrating Sparrows
by Ali Razmaara, Syed | Dr. Muhammad Athar Khan | Dr. Haji Ahmad | Dr. Khalid Pervaiz | Faculty of Veterinary Sciences.
Material type: ; Format:
print
; Nature of contents: ; Literary form: Publisher: 1995Dissertation note: The present study was conducted to bust upon the worm load in the naturally parasitized migratory sparrows, and also to determine the effect of worm load on the blood picture. Furthemore the effect of broad spectrum anthelmintic like Panacur (fenbendazole) in the experimental group in terms of eggs per gm. of faeces pre and post medication.
For this experiment 400 live migratory sparrows were purchased randomly, out of which 200 birds were slaughtered and an incidence of 64.5% parasitic fauna was found. Sparrows were found infected, with two species of nematode i.e. Ascaridia gaul was 39.5% and Heterakis gallinarum was 25% respectively. None of the bird was found infected with trematode and cestode.
The hematology of the above 64.5% parasitized sparrows was performed. The study revealed that due to nematode infection there was a slight increase in Total leucocytic count and Heterophils whereas the Total erythrocytic count, Haernoglobin level, Lymphocytes and Eosinophils were decreased which may lead to anemia, loss of growth and production.
From the left 200 wild naturally parasitized sparrows, 86 (43%) birds were found positive. These sparrows were divided into two groups one was left as control and the other group was subjected to drug efficacy. Panacur (fenbendazole) at the rate of 9.9 mg/kg body weight which was given orally. The results were observed in terms of eggs per gm. of faeces pre and post medication after 24, 48 and 96 hours respectively. The control group showed progressive increase in ova count i.e. 12.82%, 24.79% and 48.72% respectively, whereas reduction in the ova count of the medicated group was gradually observed as 83.72%, 92.25% and 95.35%.
The poultry breeders and scientists are urged to make an effort how the wild birds could mechanically transmit the parasites from one region to another. An attempt should also be made for the better understanding of bacterial and viral infections dissemination.
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3.
Comparative Efficacy Of Oxyclozanide, Rafoxanide And Bithionol Sulphoxide Against Paramphistomiasis In Buffaloes
by Umar, M | Prof.Dr.Muhammad Ashraf | Dr. Haji Ahmad | Dr. Khalid Pervaiz | Faculty of Veterinary Sciences.
Material type: ; Format:
print
Publisher: 1998Dissertation note: The present project was designed to test the anthelmintic efficacy of oxyclozanide, Rafoxanide and Bithionol suiphoxide against paramph istomiasis in naturally infected buffaloes. The comparative anthelmintic trials were conducted among Nilzan drench - Id (Oxyclozanide 3.0% + Levamisole 1.5%,), Fasifree - Prix (Rafoxanide 30 mg/mI), Irchasol - Medivet (Bithionol sulphoxide 10% + Levamisole 1.5%) and Nilverm drench - ICI (Levamisole 1.5%) against paramphistomiasis in buffaloes.
Seventy five naturally infected buffaloes were selected and divided into five equal groups i.e. A, B, C, D and E containing 15 animals each. Each animal of group A was given Nilzan drench (lml/2kg body weight), group B was given Fasifree (lml/4kg body weight), group C was given Irchasol (lml/2kg body weight), group D was given Nilverm (lml/2kg body weight), while group E was kept as control. The efficacy of anthelmintics was evaluated by counting eggs per gram (EPG) of faeces on day 7, 14 and 21 post-medication.
The mean efficacyh of Nilzan drench was 97.29%, mean efficacy of Fasifree was 98.5% and of Irchasol was 85.56% while Nilverm did not have any effect for the treatment of Paramphistomiasis in buffaloes under field conditions.
Availability: Items available for loan: UVAS Library [Call number: 0547,T] (1).
4.
Epidemiology And Economic Losses Of Trichostrongylid Parasites In Sheep
by Sarwar Khan, M | Dr. Muhammad Athar Khan | Dr. Haji Ahmad | Dr. Khalid Pervaiz | Faculty of Veterinary Sciences.
Material type: ; Format:
print
Publisher: 1997Dissertation note: The meteorological data recorded during the study period from 1.1.96 to 31.12.96 showed the maximum temperature in June as
36.5°C and minimum temperature in December as 6.8°C. Maximum and minimum Humidity was recorded in the month of September and April as 85% and 55% respectively. The maximum rainfall during the year was recorded in the month of August as 660 mm.
The faecal egg counts of sheep grazing on permanent pasture showed the minimum EPG during first week of January while maximum EPG on nid of September and first week of October.
Pasture larval counts were performed on permanent pasture and experimental plot for the recovery of trichostrongylid larvae. The maximum number of larvae was recovered on 16th September, 1996, while minimum number was recovered in January and February from permanent pasture and experimental plot respectively. Two species of trichostrongylids were identified i.e. Haemonchus contortus and Trichostrongvlus colubriformis.
The faecal and larval counts were very low in the months of January and February, the counts started rising in March. Peak counts were seen in the month of September. Decline in counts started in late October and reached to minimum in December.
Mature and immature worm counts of slaughtered sheep were performed at 15 days interval. The, overall prevalence oftrichostrongylid parasites was 34%. The maximum number of mature parasites were seen during first week of October which was886 whereas maximum number of immature parasites including hypobiotic was 326 on 1st of December. During this study the average fecundity/female of contortus and L colubriformis parasites were calculated as 721 and 209 respectively. A spring rise in worm egg counts was experienced in mid of March. A pen parturient rise in the worm egg counts of pregnant and lactating ewes indicated the maximum counts during lambing week.
An experimental group of sheep with mixed infection of trichostrongylid parasites showed the similar pattern of EPG counts as of naturally infected sheep.
A study was performed to evaluate any protection provided by a particular Flaemoglobin type to trichostrongylid infection hut not difference could be observed. The Asparate Aminotransferase (AST) and total protein levels of infected sheep were decreased as a result of increase in the intensity of infection.
A decrease in R.B.C. counts, Haemoglobin, Packed cell volume and lymphocyte counts was observed both in experimentally and naturally infected slaughtered sheep. However, an increase in total leukocytic count (TLC) alongwith an increase in the ratio of neutrophils, eosinophils and basophils was observed.
At the end of experiment infected sheep gained 5.71 Kg/head less body weight and produced 4 3 grn less wool as compared with non-infected group. Based on epidemiological information the suggestions for control of the, trichostrongylid infection are submitted alongwi th recommendations for further studies.
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