While the purchase price is an important consideration, it should not be the only factor on which decisions are made. Lambs should be purchased to suit the most economic finishing system. There is little point in purchasing light lambs that will not be finished until the new year if grass supplies are only available to carry lambs until the end of October, resulting in a higher feed bill than can be justified in a budget. The following factors should be used in helping to form your decision:

  • Finishing system: Where grass forms the basis of your finishing system, use realistic performance levels. Lambs will gain 150g to 180g per day on average during August through to mid-September. This will drop to 120g to 140g until early November, after which point liveweight gain will become variable and dependent on weather, grass quality and utilisation.
  • Ration cost: Be realistic if purchasing light lambs as they are likely to require some level of concentrates to finish. This ranges from a relatively low supplementation level in lambs that have a good run on dry land to 1kg to 1.3kg daily for lambs finished intensively indoors.
  • Mortality: It is important to factor in a level of mortality, especially if purchasing light lambs that will not be finished until next spring.
  • Market price: In the last few seasons, market returns have increased significantly during February and March, hitting a peak for the Easter market.
  • Marketing costs: Do not forget to factor costs such as transport and purchase/selling costs into account. These can quickly add up to €4 to €5 if buying and selling in marts.
  • Opportunity cost of grass: If in a sheep-breeding enterprise, will having lambs around the farm competing for diminishing supplies of grass later in the season affect the performance of ewes or increase costs?
  • Hill lamb budget calculator: Teagasc have developed a very useful budget for finishing hill lambs which can be found online or accessed through your local adviser.
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