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Title: Comparative experimental Haemonchus contortus infection of two sheep breeds native to the Canary Islands
Authors: González Pérez, Jorge Francisco 
Hernández, Álvaro 
Molina Caballero, José Manuel 
Fernández Rodríguez, Antonio Jesús 
Raadsma, Herman Willem
Meeusen, Els Nt T.
Piedrafita, David 
UNESCO Clasification: 240111 Patología animal
310907 Patología
240118 Mamíferos
Keywords: Gastrointestinal Nematode Infections
Heterosis Analysis
Crossbred Lambs
Red Maasai
Resistance, et al
Issue Date: 2008
Publisher: 0304-4017
Journal: Veterinary Parasitology 
Abstract: This study compares the susceptibility to Haemonchus contortus infection in two breeds of sheep endemic to the Canary Islands, the Canaria Hair Breed sheep and the Canaria sheep. Sheep were experimentally infected with 20,000 larvae of H. contortus and animals killed on days 7 and 28 post-infection. No difference between sheep breeds were detected in immature worm counts at days 7 or 28 post-infection. However, in comparison to the Canaria sheep breed, the Canaria Hair Breed sheep showed lower mean faecal egg counts, lower adult worm counts, lower number of eggs in utero and female worm stunting. overall, these data suggest that the Canaria Hair Breed sheep has a greater resistance to H. contortus infection than Canaria sheep, and that this resistance may act at the level of the adult parasite.
ISSN: 0304-4017
DOI: 10.1016/j.vetpar.2008.02.019
Source: Veterinary Parasitology [ISSN 0304-4017], v. 153 (3-4), p. 374-378
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