In managing the nutrition of grazing sheep, the producer cannot exert the same degree of control of nutrient intake as might be practised in a beef feedlot or intensive dairy.[3,4] Intake can be increased by ensuring that sheep have access to large amounts of pasture of high digestibility and legume content. However, the focus of sheep nutritional management should not be to maximize the pasture intake of individual animals, but to optimize animal production per unit area. This will involve stocking rates that, almost certainly, will constrain the nutrient intake of individual animals. Moreover, the pasture is not only the sheep's major source of nutrients, but also the major source of the internal parasites that can dramatically reduce production and profit. It follows that sensible nutritional management of the sheep must include a program for the control of internal parasites.

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