Life Sciences Commons^™

Getting The Best Out Of Weaner Sheep In The Eastern Wheatbelt, Sally Revell

Journal of the Department of Agriculture, Western Australia, Series 4

A study of the growth of Merino weaner flocks over summer and autumn in Western Australia 's eastern wheatbelt during 1989 and 1990 has identified efficient weaner management strategies, and provided a basis for future research and extension needs of this area. The average liveweight of several weaner flocks was unexpectedly low at the start of summer. Weaner flocks may need to be supplemented before the start of summer to prevent undue weight loss at this time.

Evaluation Of The Crack Approach For The Control Of Drench Resistance In Sheep Worms, J R. Edwards, Helen Chapman, Jon Dunsmore

Journal of the Department of Agriculture, Western Australia, Series 4

The Department of Agriculture launched the CRACK approach to worm control in September 1985 in response to finding that anthelmintic (drench) resistant worms were present on 68 per cent of a random selection of Western Australian sheep farms.

The high cost of internal parasites in terms of lost production and drench costs, together with the high prevalence of resistant worms of farms, confirmed that changes were needed to existing parasite control measures in sheep.l

Barber's Pole Worm : A New Solution, R B. Besier

Journal of the Department of Agriculture, Western Australia, Series 4

Barber's pole worm (Haemonchus contortus) has been a major problem to the sheep industry for many years. About ten million sheep graze in Western Australia's high rainfall areas where barber's pole worm is prevalent, and the annual cost of losses and control totals millions of dollars each year.

Research in progress in Albany now offers the prospect of prolomged and reliable control of barber's pole worm, by means of few drench treatments.

A Survey Of Drench Resistance In Sheep Worms, J R. Edwards, R. Wroth, G. C. De Chaneet, R. B. Besier, J. Karlsson, P. W. Morcombe, D. Roberts, G. Dalton-Morgan

Journal of the Department of Agriculture, Western Australia, Series 4

Sheep worms which are resistant to chemical drenches have been detected with increasing freuency is Western Australia's south-western farming areas between 977 and 1980. These worms have anthelmintic resistance and such genetis resistance puts essential internal parasite control practices at risk.

This prompted veterinarians in the Esperance, Albany, Bunbury, Geraldton and Northam areas to survey farms to determine the prevalence of resistance to drenches and to define those sheep management practices which encourage its development.

This article describes the survey which was conducted to assess the extent of drench resistance, what causes its build-up and how it can be controlled …

Recent Research On Cattle Worms : Research Round-Up, F C. Wilkinson, G. De Chaneet

Journal of the Department of Agriculture, Western Australia, Series 4

Summary of research carried out on cattle worms.

Prevent Worms In Cattle, G C De Chaneet

Journal of the Department of Agriculture, Western Australia, Series 4

PARASITIC gastro enteritis, caused by roundworms, is a common cause of economic loss in calves, yearlings and occasionally cows in south-western Australia. Losses could be prevented if stock owners realised the full effects of these parasites, and understood the causes of worm infestation.

Drenches For Treatment And Control Of Worms In Sheep : 1969 : Efficiency, Cost And Safety, W A. Halhead, G. De Chaneet

Journal of the Department of Agriculture, Western Australia, Series 4

THERE is a wide variation in the efficiency and cost of drugs for worm control in sheep.

Generally, the higher the efficiency, the greater the cost. Prices are subject to change, and may vary with the amount of drench purchased.

Worms In Sheep. 2. Seasonal Variations In Worm Burdens, R W. Butler

Journal of the Department of Agriculture, Western Australia, Series 4

The first article in this series described the worms which commonly infest sheep in Western Australia and the symptoms caused by heavy infestations.

This article outlines the effects of seasonal changes on worm burdens in sheep.

AS a basis for planning a worm control programme it is essential to have information on the seasonal changes in worm burdens and on the factors which control these.

In this article, the more important of these are considered.

Worms In Sheep. 3. Control Of Worms By Drenching, R W. Butler

Journal of the Department of Agriculture, Western Australia, Series 4

DRENCHING for worm control must be carefully timed in relation to the effect of climatic conditions on the development and survival of worm larvae on the pastures, and the seasonal variation in worm burdens carried by sheep.

These Worms ........ Caused This, F C. Wilkinson

Journal of the Department of Agriculture, Western Australia, Series 4

THE weather had been remarkably pleasant, with an odd shower of rain followed by several warm days.

Just the weather for blowfly troubles, so the owner decided it was time he crutched his breeding flock of 500 ewes.

But as the mob approached the yards trouble was coming

Worms In Sheep. 1. The Worms Which Infest Sheep In W.A, R W. Butler

Journal of the Department of Agriculture, Western Australia, Series 4

Parasitic worms of sheep occur so widely that they are a problem of most flocks.

While a few worms might be of little consequence, worms can kill many sheep and could cause serious economic loss in the agricultural areas of W.A.

This first article describes the types of worms and their effects on sheep.

Internal Parasites Of Cattle, J Craig, R. Butler, M. E. Nairn

Journal of the Department of Agriculture, Western Australia, Series 4

Worm parasites can have a most serious effect on cattle, even causing deaths.

This article describes the main parasites of cattle, treatment with modern anthelmintic drugs and the best means of preventing and controlling worm outbreaks.