Study of the effect of climate on free-living stages of Dictyocaulus filaria in Baghdad area.
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Abstract
The survival ability and development of the free living stages of Dictyocaulus. filaria larvae were studied to understand the epidemiology of this parasite in irrigation system . Galvanised iron boxes were planted and containated at subsequent times by faeces containing the larvae. Then faecal , soil and pasture samples were examined weekly, climatic conditions were recorded in Baghdad area.
The results showed that the free living larvae survived and migrated from the faeces to the soil and pasture in the squares of the 2 nd group of boxes which has been contaminated in January for a longer period in comparison with other groups. The larvae survived until the 1 st week of April in their faecal , soil and pasture samples. On the other hand , no larvae could be recovered after one week of contamination in the fifth group of boxes which has been contaminated in July. In the other groups of boxes, the larvae survived for (98) days in the 1 st group , (49) days in the 3 rd group and for (21) days in the 4 th group, however, the number of larvae in the soil and pasture in all groups was lower than that in the faeces, and the presence of larvae in the soil was recovered for short time
The climatic condition during December , January , Febreuary and March had good influence on the survivability and moulting of the larvae in comparison with the adverse effect of other months . *Part of his M.Sc. Thesis.
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2 Armour, J. (1980) The epidemiology of helminthe diseases in farm animal. Vet. Parasitol, 6, 7-46.
3. Crofton, H.D. (1963) Nematode parasite populations in sheep and on pasture. Tech. Commun. 35. Common w. Agric Bur. Farnham Royl, England, 101.
4. Levine, V. D. (1963) Weather climate and bionomics of ruminant nematode larvae. Adv. Vet. Sci. 8, 215-261.
5. Kassai, T.; Altaif, K.I. Kadhim, J.K., Jabbire, M.H. and Bayyer, H.A. (1972) Experiments on a cquired esistance of sheep and goats induced by infection 7 irradiated and non irradiated D, filaria larvae. Iraq Med. J. 22, 108-120.
6. نئون / عفاف (1984) دراسة حقلية لبعض الجوانب البيئي Flaemonchus contortus condolés Új رسالة ماجستير - جامعة بغداد.
7. Altaif. K. I and Yakoob, A.Y. (1987) Development and survival of Haemonchus controtus larvae on pasture in Iraq. Trop. Anim. Hlth. Prod. 19, 88-92.
8. Al-Samarrae, S. A.G. (1975). Epidemiology of parasitic bronchitis in sheep. Ph.D. thesis University of Edinburgh.
9. Rose, J. H. (1955) Observation on the bionomic : of free-living larvae of the lung worm D.filaria. J. 33
Comp. Path. 65, 370-381.
10 .volleyball cluello cikell Juss.. (1981) Sus ensorsagelig vuigo ds g - jj osoal jhian just jsill.171-170 vs ciagall deslo vull so amwe go
11-Al-Mishhadani, F.J.K. (1999) Immunization of goats with atteunated larvae of Dictyocaulus filaria by laser and Gamma rays. Ph.D. thesis, University of Baghdad .Iraq.
12-Iwdish , A.A. (1995) Experimental infection of local goats with Dictyocaulus filaria , the Veterinarian Vol. (5) 63-70.
13-Halpin, B. (1975) Patterns of animal disease. 18. Ed. Pp.71-79 Bailliere Tindall London.
14-A1-Obaidy, N.T.M. (1989) A study of epidemiology of lung worms of sheep in Ninavah, Iraq. M.Sc. Thesis,University of Mosul. Abst. from Iraq J.Vet. Sci. (1991), 4 No.2 p.170.
15-Thomas, R. J. (1974) The role of climate in the epidemiology of nematode parasitism in ruminants. In: The effect of metrological factors upon parasites by Angela, E.R. and Taylar, R.eds, Muller Black well scientific publication. Oxford, London, Edinburgh, Melbourne.
16-Gallie G. J. and Nunns, V.J (1976). The bionomics of the free - living larvae and the transmission of D.filaria between lambs in North - England. J. Helmithol. 50, 79-89.
17-Berrag, B. and Urquhart G.M. (1996) Epidemiological aspects of lung worm infections in goats in Morocco, Vet. Parasitol, 61, 81-85,
18-Hayat , c.s., Iqbal , Z.; Hayat, B. and Kahan, M.N.(1986). Studies on the seasonal prevalence of fascioliasis and lung worm disease in sheep at Faisaland . Pakiston vet, J,6,131-134.