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1.
Vet Parasitol ; 92(4): 261-7, 2000 Oct 20.
Article in English | MEDLINE | ID: mdl-10996737

ABSTRACT

An experimental study on interaction between Trypanosoma evansi and Haemonchus contortus infections was conducted in 42 male Barbari goats of 6-9 months age. Parasitological observations like prepatent period, faecal egg count, worm burden and mortality were made in animals infected with H. contortus followed 1 week later with T. evansi and vice versa. These parameters were also examined in animals with single infection with each of these parasites. It was revealed that T. evansi infection in goats lowered the normal resistance to H. contortus. The prepatent period was markedly reduced to 16-18 days in cases where T. evansi preceded H. contortus as compared to 21-25 and 21-23 days in single H. contortus and in a H. contortus preceding T. evansi infection, respectively. The rate of L(3) establishment was significantly enhanced in infection where T. evansi preceded H. contortus. A higher rate of mortality and more pronounced pathological effects were observed in combined infections than in single ones.


Subject(s)
Goat Diseases/parasitology , Haemonchiasis/veterinary , Trypanosomiasis/veterinary , Animals , Feces/parasitology , Goat Diseases/immunology , Goat Diseases/mortality , Goats , Haemonchiasis/complications , Haemonchiasis/mortality , Haemonchus , Male , Trypanosoma , Trypanosomiasis/complications , Trypanosomiasis/mortality
3.
J Helminthol ; 52(4): 343-53, 1978 Dec.
Article in English | MEDLINE | ID: mdl-752057

ABSTRACT

Morphological variations in Onchocerca armillata and O. gutturosa, from buffalo and cattle, with special reference to male tail and cuticular ornamentation, have been studied from a large collection of worms available from the infected aortae and ligamentum nuchae, procured from slaughter houses at 3 different localities in Uttar Pradesh, India. Seven variations in the disposition of caudal papillae in males in O. armillata and 14 in O. gutturosa are described. The prevalence of these two Onchocerca species in bubaline and bovine populations appears to be widespread.


Subject(s)
Buffaloes/parasitology , Cattle/parasitology , Onchocerca/anatomy & histology , Animals , Cattle Diseases/parasitology , Female , India , Male , Onchocerciasis/parasitology , Onchocerciasis/veterinary
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