Zia ur Rehman, Qazi

Studies On The Incidence Of Gastro Intestinal Helminths And Their Economic Impact On Production Potential Of Sheep - 1998

A study of gastro intestinal helminth parasites of sheep and goats of District Peshawar has been conducted, covering a period of 4 months (May to August, 1998). During this study incidence of GIT. helminths and their impact on production potential (weight gain) of sheep and goats was studied. Random collection of samples were made from Peshawar slaughter house and a total of 40 guts each in sheep and goats were examined and following species of helminths were recovered and identified. Oesophagostomum columbianum, 0. venulosum, Trichuris parvespiculum, Haemonchus contortus, Chabertia ovina, Bunostornum trigonocephalum, Nematodirus spathiger, Moniezia benedeni, Moniezia expansa, Trichuris lani, T. globulosa, Cysticercus tenuicollis.

Only two species of cestodes and nine species of nematodes were recorded during the study. However no trematode specie was recorded. Amongst the nematodes Trichiurisparuespiculum infection was recorded to be the highest in sheep and goats with an incidence of 64.70% and 73.33% respectively. The incidence of Haemonchus contortus was 24.19 and 53.33% in sheep and goats respectively. The worm burden ranged from 1-470 in sheep and 3-141 in goats respectively.

Out of total gastro intestinal tracts examined (40 each in sheep and goats), 73.33% and 60.29% were found positive for mixed infection in sheep and goats respectively.

In order to assess the effect of GIT helminths on live weight gain and its measurement in terms of economics of the above mentioned animals, 0 Hasthnagri sheep and 30 beetal goats were divided into two groups (control vs. treated by Nilzan Plus of ICI). The average daily weight gain in sheep group was 83.78 gms while in goats it. was 85.26 gms per animal. On comparison with treated group, the increase weight gain was 3.03 kg and 2.56 kg in sheep and goats respectively at the end of the experiment. Calculating the increase on live weight basis Rs.234.5 and 158 per animal were earned more in sheep and goats respectively. After deducting the cost of anthelmintic treatment the net gain Rs.222.5 and Rs.146 per animal in sheep and goats. During this study a progressive decrease in faecal egg counts with increasing age was observed both in sheep and goats.

Statistical analysis by using un-paired "t" test confirmed that there was significant differences in weight gain and faecal egg counts, between control and treated groups of sheep and goats.

Department of Parasitology


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