School of Agriculture, Food and Ecosystem Sciences - Theses

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End date: 1969 × Type: Masters Research thesis × Subject: Nutrition × Subject: Sheep ×

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Now showing 1 - 3 of 3
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    The effect of the level of nutrition during pregnancy and lactation on the production of grazing sheep, and the interaction between levels of fertility and nutrition
    Papadopoulos, J. C ( 1956)
    The livelihood of the sheep farmer depends upon the success with which his ewes produce and rear healthy lambs. This is of particular truth in those areas where fat lambs are produced. It is well known that the production of lambs in large number and in good health depends very largely upon the standard of feeding of the ewes during pregnancy and lactation. however in most areas of the world sheep are restricted to those marginal localities in which the agriculturist finds it difficult to produce milk, eggs or vegetables. Under these conditions, the feeding of pregnant and lactating ewes becomes a task of some difficulty. Where food is in short supply it is very necessary to know at what stage of pregnancy or lactation the plane of nutrition should be raised. Thomson and Thomson (1949) have shown that in Scotland the sheep farmer should feed a supplement to his ewes during late pregnancy. Coop (1950) on the other hand has shown that under his New Zealand conditions, the supplement was best reserved until lactation has commenced. It was thought important to know the effect of different planes of nutrition on pregnant and lactating ewes under the conditions of sheep farming in South Victoria. It was for this reason that the present investigation was undertaken. In addition it was thought to be of interest to determine the interaction "if any" between the level of fertility and that of nutrition
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    Nutritional studies of the young lamb
    Hodge, Russell ( 1967)
    This thesis is based on original research work in a subject approved by the Faculty of Agriculture and is submitted under regulation 3.28 Section 6(a) of the conditions relating to the degree of Master of Agricultural Science. The experiments presented have been published in the Australian Journal of Experimental Agriculture and Animal Husbandry or in the Proceedings of the Australian Society of Animal Production. They were conducted while the author was a member of the Victorian Department of Agriculture which provided the facilities for this work. The first chapter of the thesis is a review of the literature on the digestibility of milk and solid food by the young ruminant - more specifically the calf and the lamb. The second chapter describes two experiments on the apparent digestibility of ewes milk and dried pasture by young lambs and the third chapter comprises two experiments relating to the effect of milk intake on the pasture consumption of lambs. The fourth chapter reports observations on the diet selected by grazing lambs in relation to older sheep. I was responsible for the design of this experiment, was actively associated with the field work and prepared the manuscript for publication. The fifth chapter is a paper on the effect of nutritional restriction during pregnancy on the reproductive performance of crossbred ewes and the subsequent growth of their lambs. The sixth chapter provides summaries of the experiments presented.