Protection of calves against Haemonchus placei and Haemonchus contortus after immunization with gut membrane proteins from H. contortus

A vaccine containing integral membrane glycoproteins from the intestine of Haemonchus contortus was evaluated in four groups of nine worm-free calves challenged with either 8000 H. contortus or Haemonchus placei infective larvae. Vaccinates received 50 mu g of the antigen and 1 mg QuilA adjuvant thr...

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Access type:openAccess
Publication Date:2011
Main Author: Bassetto, C. C. [UNESP]
Other Authors: Silva, B. F. [UNESP], Newlands, G. F. J., Smith, W. D., Amarante, Alessandro Francisco Talamini do [UNESP]
Document type: Article
Language:eng
Published: Wiley-Blackwell
English subjects:
Online Access:http://hdl.handle.net/11449/18918
http://dx.doi.org/10.1111/j.1365-3024.2011.01295.x
Citation:Parasite Immunology. Malden: Wiley-blackwell, v. 33, n. 7, p. 377-381, 2011.
English abstract:A vaccine containing integral membrane glycoproteins from the intestine of Haemonchus contortus was evaluated in four groups of nine worm-free calves challenged with either 8000 H. contortus or Haemonchus placei infective larvae. Vaccinates received 50 mu g of the antigen and 1 mg QuilA adjuvant three times 21 days apart, while the controls got adjuvant alone. The calves were challenged 7 days after the last immunization and killed for worm counts 43 days later. Immunization resulted in high titre antibodies against the vaccine antigens and significant reduction in egg output and worm numbers of both challenge species, compared with control calves. It was concluded that vaccination of calves with native parasite gut membrane glycoproteins obtained from H. contortus conferred protection against both H. placei and H. contortus.