Oral infectivity of cryopreserved Haemonchus contortus infective larvae that recovered relatively slowly when thawed after more than 15 years in liquid nitrogen

Onderstepoort Journal of Veterinary Research

Volumn 67, Issue 2, 2000, Pages 149-152

  Van Wyk, J A ^a,b   Gerber, H M ^c  

^a UNIVERSITY OF PRETORIA   (South Africa)

^b ONDERSTEPOORT VETERINARY INSTITUTE   (South Africa)

^c NONE

Author keywords

Cryopreservation; Haemonchus contortus; Larva longevity; Oral infection

Indexed keywords

HAEMONCHUS CONTORTUS; OVIS ARIES;

ANIMAL; ANIMAL DISEASE; ARTICLE; CRYOPRESERVATION; GROWTH, DEVELOPMENT AND AGING; HAEMONCHUS; LARVA; PARASITOLOGY; SHEEP; SHEEP DISEASE; TIME; TRICHOSTRONGYLOSIS;

ANIMALS; CRYOPRESERVATION; HAEMONCHIASIS; HAEMONCHUS; LARVA; SHEEP; SHEEP DISEASES; TIME FACTORS;

EID: 0034195085     PISSN: 00302465     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (10)

1. CONDER, G.A. & JOHNSON, S.S. 1996. Viability of infective larvae of Haemonchus contortus, Ostertagia ostertagi, and Trichostrongylus colubriformis following exsheathment by various methods. Journal of Parasitology, 82:100-102.
2. REINECKE, R.K. 1973. The larval anthelmintic test in ruminants. (Technical Communication, no. 106, Department of Agricultural Technical Services, Republic of South Africa).
3. REW, R.S. & CAMPBELL, W.C. 1983. Infectivity of Haemonchus contortus in sheep after freezing for ten years over liquid nitrogen. Journal of Parasitology, 69:251-252.
4. VAN WYK, J.A. 1998. Viability of nematode larvae after exsheathment with sodium hypochlorite. Parasitology Today, 14:474-475.
5. VAN WYK, J.A. 1999. A comparison of the infectivity of cryopreserved versus unfrozen infective larvae of Haemonchus contortus, Trichostrongylus colubriformis and Trichostrongylus axei. Results of the Onderstepoort Veterinary Institute and collaborators from 1977 to the present. Onderstepoort Journal of Veterinary Research, 66:285-289.
6. VAN WYK, J.A. & GERBER, H.M. 1980. Survival and development of larvae of the common nematodes of ruminants after long-term cryopreservation and investigation of different routes of infestation. Onderstepoort Journal of Veterinary Research, 47:129-136.
7. VAN WYK J.A., GERBER H.M. & ALVES, REGINA M.R. 1990. Cryopreservation of some common nematodes of ruminants for up to 11,3 years. Onderstepoort Journal of Veterinary Research, 57:1-6.
8. VAN WYK, J.A., GERBER, H.M. & DE VILLIERS, F.J. 2000. Parenterally administered gastrointestinal nematode infective larvae viable after more than 15 years in liquid nitrogen. Veterinary Parasitology, 88:239-247.
9. VAN WYK, J.A., GERBER, H.M. & VAN AARDT, W.P. 1977. Cryopreservation of the infective larvae of the common nematodes of ruminants. Onderstepoort Journal of Veterinary Research, 44:173-194.
10. WHITLOCK, H.V. 1959. The recovery and identification of the first stage larvae of sheep nematodes. Australian Veterinary Journal, 35:310-316.