Inhibited development of Ostertagia ostertagi in relation to production systems for cattle
- 1 August 1982
- journal article
- research article
- Published by Cambridge University Press (CUP) in Parasitology
- Vol. 85 (1) , 21-25
- https://doi.org/10.1017/s003118200005410x
Abstract
SUMMARY: On a coastal farm in New South Wales where beef and dairy cattle production was carried on side-by-side, separate pasture plots were contaminated with eggs of Ostertagia ostertagi by calves from each production system in autumn, winter or spring. Successive groups of parasite-free tracer calves grazed on the plots for 14 days at 4-week intervals and were then killed for worm counts 14 days after removal from pasture. On all plots, the proportion of inhibited early 4th-stage larvae in tracer calves reached a maximum in spring, and was consistently and very significantly higher in calves which grazed plots contaminated with O. ostertagi of beef cattle origin. Factors which may be responsible for this difference between beef and dairy cattle populations of O. ostertagi are discussed.This publication has 3 references indexed in Scilit:
- Effects on inhibition of development of the transfer of Ostertagia ostertagi between geographical regions of AustraliaParasitology, 1981
- SEASONAL CHANGES IN THE STRUCTURE OF NEMATODE POPULATIONS OF CATTLE IN NEW SOUTH WALES IN RELATION TO INHIBITED LARVAL DEVELOPMENTAustralian Veterinary Journal, 1980
- SEASONAL AVAILABILITY OF NEMATODE LARVAE ON PASTURES GRAZED BY CATTLE IN NEW SOUTH WALESAustralian Veterinary Journal, 1980