Experimental infection of calves with Haemonchus placei and Haemonchus contortus: Assessment of parasitological parameters
نویسندگان
چکیده
منابع مشابه
Pathophysiology of Haemonchus placei infection in calves.
This study was conducted to investigate the pathophysiology of Haemonchus placei infection in Friesian calves. Seven calves were divided into two groups, three uninfected calves (control group) and four infected animals. The latter group were infected orally with 500 H. placei larvae kg-1 body weight. Five weeks after infection they were all housed in metabolic crates and injected with 125I-bov...
متن کاملHaemonchus placei and Haemonchus contortus are distinct species based on mtDNA evidence.
Debates continue over the extent to which the parasitic trichostrongylids Haemonchus placei and Haemonchus contortus hybridise in nature, and whether they deserve species status. Mitochondrial ND4 gene sequences from individuals of each putative species collected from populations around the United States indicate that the two species are highly differentiated at the mtDNA level. Furthermore, th...
متن کاملmRNA profile of Nellore calves after primary infection with Haemonchus placei.
Haemonchus parasites are responsible for many losses in animal production. However, few studies are available, especially of zebu cattle. In this study, we investigated mRNA differences of immune response genes in naïve Nellore calves infected with Haemonchus placei, relating these differences to patterns of cellular infiltrate. Calves were infected with 15,000 H. placei L3 larvae and after 7 d...
متن کاملMicroclimatic effect on vertical migration of Haemonchus contortus and Haemonchus placei third-stage larvae on irrigated Kikuyu pasture.
The influence of microclimate on numbers of third-state larvae of haemonchus contortus and Haemonchus placei in four strata of irrigated Kikuyu pasture was assessed. On 36 different, interspersed days three replicates of pasture samples were collected on three occasions per day from 1990-1992 for larval recovery and the log10 mean counts of the larvae recovered were analysed by use of ANOVA mod...
متن کاملEffect of Experimental Infection with Haemonchus contortus on Parasitological and Local Cellular Responses in Resistant and Susceptible Young Creole Goats
This study was carried out to evaluate the relationships of cellular changes in the abomasal mucosa and parasitological parameters, by comparing resistant and susceptible young Creole goats (kids) after experimental infection with Haemonchus contortus. The kids were infected over 2 periods (challenges 1 and 2) of 7 and 6 weeks, respectively. Fecal egg count (FEC), blood eosinophilia, packed cel...
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ژورنال
عنوان ژورنال: Veterinary Parasitology
سال: 2016
ISSN: 0304-4017
DOI: 10.1016/j.vetpar.2015.12.017