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Biological Factors Commons

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Full-Text Articles in Biological Factors

More Lambs From Feed And Chemical Treatments, K P. Croker Jan 1986

More Lambs From Feed And Chemical Treatments, K P. Croker

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

The ovulation rate, or the number of eggs shed per ovulating ewe, represents the upper limit of the capacity of a flock of ewes toproduce lambs. Several methods can be used to increase ovulation rates and lambing percentages of ewes, including selection for better breeding, feeding and the use of chemicals.

The potential for improving the reproductive performance of Western Australia's ewe flocks by the use of different approaches to breeding was discussed by L.G. Butler and R.P. Lewer in the Journal of Agriculture in 1983.

This article mainly discusses the research conducted by the Department of Agriculture's Sheep and …


Reproductive Wastage In Sheep In Non-Clover Areas, C. H. Trotman Jan 1972

Reproductive Wastage In Sheep In Non-Clover Areas, C. H. Trotman

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

A Research Round-up report in the June, 1972, issue of the Journal of Agriculture discussed the reproductive performance of sheep in Western Australia and indicated that more than 20 per cent, of mated ewes fail to lamb.

The report presented the first year's results from sheep grazing clover areas.

This report presents results from the nonclover sections of the investigations


A Sick Ewe Why? [Pregnancy Toxaemia], F C. Wilkinson Jan 1966

A Sick Ewe Why? [Pregnancy Toxaemia], F C. Wilkinson

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

THIS dazed-looking ewe was seen wandering aimlessly around with an unsteady gait.

Three other ewes had died after a similar sickness lasting about four days.

Two more sheep in the flock of 350 ewes were also sick. One of them was down with its head on one side.